Glossary & Terms

Air Chambers
Small honeycomb shaped spaces within the sashes that help strengthen and also insulate a window

 

Air Infiltration
The amount of air that passes between a window sash and a frame. Measured in cubic feet per minute, per square foot of area. A lower air infiltration number means that there is less air passing through

 

Aluminum Clad
The exterior wood parts of a window covered with extruded aluminum, with a factory-applied finish

 

Apron
Decorative trim positioned directly underneath a window stool and installed flush against the wall

 

Arch Window
Four sided unit with a curved top

 

Argon Gas
An inexpensive,non-toxic, odourless gas used to fill between two or three panes of glass to increase energy efficiency and reduce noise infiltration

 

Art Glass
Decorative glass that comes in a variety of colours, shapes, and patterns used to accent a window or door

 

Astragal
Attached to the latch or passive door allowing for a wider opening in double door applications. the astragal covers the margin between the two doors when they are closed, and contains the weatherstrip

 

Awning Window
Unit hinged at the top and swings outward from the bottom

Balance Covers
Covers the balance cavity that holds the balance system inside of the jamb

 

Balance Shoe
Attached to the bottom of balances that attaches the balances to the sash. A bar or pin on the sash fits in a slot in the show

 

Balance Spring
Used for counterbalancing a sliding sash, usually linked with a double hung window, so that it can be held in any position

 

Balance System
Used for holding any vertical sliding sash in any position through the use of a spring or weight to counterbalance the weight of the sash

 

Bay Window
Window consisting of three or more units that angle out beyond the wall; often configured with a large centre and two flanking units

 

Beveled Exterior
An angled extension from the frame that adds an aesthetically pleasing dimension to the outside of the window

 

Blind Stop
A sash or window frame member applied to the exterior vertical edge of the side and head jamb in order to serve as a stop for window sash or screens

 

Bottom Rail
The bottom horizontal member of a window sash

 

Bow Window
An angled combination of windows in 3,4, or 5 lite configurations. The windows are attached at 9 and 15 degree angles to project a more circular, arced appearance

 

Brickmould
Cover the rough opening between the frame and the wall. Brick mould allows you to install a new window into an existing opening without disrupting the exterior siding, stucco,or brick. Brick mould comes in a variety of sizes and styles to allow for a custom look

 

Butyl
Rubbery material that seals glass to the spacer, which creates a water and air-tight unit

Cam Lock and Keeper
Mechanisms that pull the sash together when placed in the locked position

 

Caming
The metal parts of a decorative glass design

 

Casement Window
Unit hinged on the side and opens to the side; allows top to bottom ventilation

 

Casing
Exposed moulding or framing around a window or door, inside or outside, to cover the space between the window frame or the jamb and the wall

 

Caulking
A sealant used to prevent water and air infiltration, used for various construction application

 

Check Rail
The bottom horizontal member of the upper sash and the top horizontal member of the lower sash which meet at the middle of a double hung window

 

Cladding
Sheeting (usually aluminum or vinyl) applied on the exterior of a window to provide extra weather resistance

 

Clear Opening
The size of the opening created when a unit is in a full open position

 

Clerestory
A window located up high on a wall; usually unreachable from ground level

 

Coil Stock
Roll aluminum that is bent into shape to form a transition piece between the unit exterior and siding/trim

 

Combination Unit
Storm window and insect screen contained in a single frame

 

Condensation
Water that collects as droplets on the glass/sash/panel interior or exterior under certain conditions (usually cold surfaces when exposed to humidity)

 

Condensation Resistance Factor
A measurement of a windows effectiveness to reduce the potential for condensation. If a condensation resistance factor is higher, the window will be more efficient

 

Conduction
The process in which heat is directly transmitted through a substance when there is a difference of temperature

 

Contemporary
Can be very eclectic because it is what is popular or used right now. It is always changing and borrows bits and pieces from all different eras

 

Convection
Transfer of heat from a warmer medium to a cooler one

 

Corner Seal Pads
Complete the seal between the sill cap, bottom sweep, and weatherstrip to help block potential pathways where wind-driven moisture can infiltrate the bottom corner of the door system

 

Cornice
An ornamental moulding at the top of the window positioned above the exterior trim

 

Cottage Window
Double hung window where the upper sash is shorter than the bottom sash

 

Craftsman
Defined by low-pitched gable roofs with broad eaves, large front porches, and exposed wooden structural elements. Usually 1-2 stories of wood construction

 

Cylinder Bore
A machining procedure that requires a round hole to accommodate a standard entry set

Damage Function
Percent of UV and Visible Light energy from the sun that can cause fabric fading. The lower the number, the less potential for fabric fading

 

Daylight Opening
Visible glass area

 

Dead Air Space
The space between the panes of glass in an insulating glass unit

 

Dead Bolt
A bolt engaged by turning a knob or key, rather than by spring action

 

Decorative Drip Cap
Ornamental trim piece located at the of the window above the exterior trim that directs water away from the top of the window

 

Direct Glazed
Glass glazed directly into the frame. Also called direct set

 

Direct Set
Glass glazed directly into the frame. Also called direct glazed

 

Dividers
Components used to simulate individual pieces of glass within a sash/panel. Also called muntin bars, grilles, or grids

 

Door Lite
Individual glass panes within a door panel

 

Door Stop
A fixed object that stops a door from banging against a wall

 

Door Sweep
Flexible moulding attached to the bottom of the slab that creates a seal between the slab and sill to help form a barrier against and moisture infiltration

 

Double Hung
Venting upper and lower sashes in a single frame that slide vertically past one another

 

Double Pane
Two panes of uncoated (non-Low-E) glass with an air filled cavity

 

Dowel Joint
A corner created by precisely boring matching holes into a door rail and style and joining them together with a dowel pin

 

Drip Cap
One-piece aluminum or vinyl over installed above windows or doors that directs water away from the top of the unit

 

Drywall Return
Used on windows where trim where no trim will be used

Egress
A venting window required by building codes for emergency escape and rescue, typically required in bedrooms and required to meet minimum opening dimensions

 

Egress Code
A code that requires a minimum opening of a window for persons to exit or firefighters to enter a building

 

Electric
Operator a motorized device that provides for remote operation of an awning window

 

Emissivity
The relative ability of a surface to reflect or emit heat by radiation. Measured in U-Value or its inverse, R-Value

 

Energy Star
A government backed program to help consumers identify energy efficient products

 

Equal Lite
Window or door with equally spaced grille bars

 

Escutcheon Plate
Decorative door handle plate that conceals the locking mechanism

 

Exterior Trim
A decorative trim positioned around the exterior perimeter of a window or door

Fenestration
Refers to an opening in a structure such as windows, doors, and skylights. Can also refer to placement of windows and doors in a building

 

Film
Removable,semi-transparent material that adheres to and helps protect the glass during construction

 

Fixed
Non-venting or non-operable

 

Flashing
Water resistant material that directs water to a drainage plane or to the exterior surface of a building

 

Flashing
Water resistant material that directs water to a drainage plane or to the exterior surface of a building

 

Folding Door
Door unit with multiple hinging panels that can be folded together to create a large,unobstructed opening

 

Foot lock/Foot bolt
Auxiliary lock used on gliding doors to secure the operating panel to the sill

 

Frame
The combination of the header, jambs, and sill that forms a precise opening in which a window sash fits

 

French Casement Window
Unit with two venting sashes that open outward to provide a large center opening with no center point

 

French Door
Hinged doors with large glass area surrounded side stiles and a tall bottom rail

 

Full Divided Lite
Grille intended to replicate the look of a true divided lite unit, consists of an interior and exterior grille, and spacer between the glass panes

 

Full Frame
Frame intended for installation direct to the rough opening; opposite of insert window

Glass Stop
Removable trim that hold glass in place

 

Glazing
Glass in a window sash or door panel

 

Glazing Bead
Wood or vinyl pieces around the perimeter of the glass that covers the space between the glass edge and sash

 

Glazing Tape
Double sided tape used to adhere glass to the sash and form an airtight and watertight seal

 

Gliding Door
Door with two or more panels, where one panel slides horizontally past the other. Also called sliding door

 

Gliding Window
Window with two or more sashes, where one sash slides horizontally past the other. Also called sliding window

 

Grids
Components used to simulate individual pieces of glass within a sash/panel. Also called muntin bars, grilles, or dividers

 

Grilles
Components used to simulate individual pieces of glass within a sash/panel. Also called muntin bars, dividers, or grids

 

Gusset Plate
Metal plate attached to a window or door to strengthen a window or door joint

Half Round Window
Half circle unit consisting of a curved top and linear bottom

 

Half-Insect Screen
Insect screen that covers the opening area of the operating sash in hung and gliding/sliding windows

 

Handing
Opening direction of hinging windows and doors. Direction is determined by location of hinge on unit as viewed from the exterior

 

Head
The upper horizontal member of a window

 

Head/Seat Board
Stain grade wood shaped to the angles of a bay or bow window that form the finished upper and lower surfaces

 

Header
The upper horizontal portion of the main frame of a window or door

 

Hinged Glass Panel
Specific to Pella; a glass panel on windows that opens inward to the snap-in, between the glass blinds, shades and grilles

 

Hinges
Mechanisms that allow the door to swing, help insure stability and performance

Impact Resistant Glass
Laminated glass frequently used in hurricane-prone areas for protection from wind-borne debris

 

Inactive Panel
or Inactive Sash panel or sash that will open only after active panel/sash is opened

 

Insect Screen
A tightly woven mesh attached to a frame. Allows outside air ventilation while keeping insects out

 

Insert Window
A new window unit intended to be installed inside the frame pocket of an existing window

 

Insulating Glass
Two or more panes with a sealed airspace in between, usually filled with argon gas to increase the insulating ability of the glass

 

In-swing
A hinged door panel that swings inside when opened

 

Inter locker
An upright part of a door panel in a sliding glass door which engages with a corresponding piece in an adjacent panel when the door is closed

Jalousie Window
Louvered window with multiple horizontal glass sections that rotate open or closed

 

Jamb
The vertical sides of a doorway, window, or other opening

 

Jamb Clips
Metal brackets used to secure a unit to the rough opening from the interior

 

Jamb Extension
A piece of wood or vinyl that is used to widen to frame of a window or door. Usually attached to the inside of the frame so any trim can be applied to a wider wall

 

Jamb Liner
Interior frame cover surface where the sash slides on a double hung window

 

J-Channel
Receiver components that surrounds a window intended to hide the seam between the window and siding

Keeper
The part of the window lock, mounting on the opposing surface of the window, that the lock arm locks under or into to pull the sash into and fully released and fully releases it when opened

 

Keeper Rail
The horizontal section of the sash where the keeper is attached

 

Keeper Stile
The vertical section of the sash where the keeper is attached

 

Keyed Lock
Patio door lock that enables locking and unlocking from the exterior side

 

Krypton Glass
Rare, inert gas that has twice the density of argon gas, but will leak over time

Latch/Lock
A device that holds the window shut

 

Lift
Handle for raising and lowering the sash in a double hung window. Also called a sash lift

 

Lift Handle
Handle on the bottom of a double hung that makes it easier to raise and lower the sash

 

Lift Rail
A handhold that is continuous across the sash to raise and lower the sash

 

Light to Solar Gain (LSG Ratio)
The ratio of visible transmittance to solar heat gain coefficient

 

Lite
A unit of glass in a window or door. Can be clear, tinted, obscure, coloured, etc

 

Lock
Mechanism used to secure windows and doors into a closed position

 

Lock Handle
A locking mechanism located on the jamb of a window

 

Low E Glass
Glass with a transparent metallic oxide coating applied on or in the glass surface. The coating allows short wave energy to pass through (light), but reflects long wave infrared energy (heat), which improves U-value

Main Frame
The head, sill, and jambs of a window

 

Masonry Opening
Opening in the brick, stone, or stucco wall where a window or door is installed

 

Meeting Rail
The horizontal sections of a pair of sash that meet when the sashes are closed

 

Meeting Stile
Central location on a sliding window or door where the sashes or panels overlap

 

Modern
Design style created in the early to mid 1900s, which does not change. Uses clean, unadorned materials, and different types of natural materials are used. Polished metal, moulded plywood, and plastic is commonly used

 

Mortise
A hole or recess cut into a part, designed to receive a corresponding projection (tenon) on another part so as to join or lock the parts together

 

Mortise and Tenon
Joint a joint where one piece of wood is inserted into another

 

Mullion
A vertical or horizontal connecting unit between two or more windows

 

Multi-lock
One cam lock lever at the bottom operates multiple locking points to secure the sash to the frame

 

Multi-point
Lock System lock that engages the sash or panel in multiple locations; activated by a single motion

 

Muntin Bar
Components used to simulate individual pieces of glass within a sash/panel. Also called grilles, dividers, or grids

Nailing Fin
An extrusion that attaches to the window frame and used to secure the unit to the rough opening

 

Nickel Vapour Deposition (NVD)
MasterGrain’s NVD Technology is a patented process that authentically replicates any natural surface. Desirable wood grains are hand selected, then a silicone cast picks up every little detail of the wood grain and is transferred to into a door mould using the NVD Technology. The mold produces fiberglass skins used on MasterGrain doors with random grain depths and all the natural characteristics of real wood making our doors virtually indistinguishable to real wood doors.

 

Night Latch
Latch mechanism on the inside of the top sash that retains the window in a partially open position for ventilation

Obscure Glass
Glass with a texture or pattern of various degrees of opacity that limits visibility

 

Operator metal arm, gear, and handle used to open and close hinged windows

 

Outdoor Visible Light Reflectance
The percentage of light that is reflected from the glass surface(s)

 

Outdoor/Indoor Transmission Class (OITC)
Measurement standard used to indicate the rate of sound transmission between indoors and outdoors (also see STC)

 

Out-swing
A hinged door panel that swings to the outside when opened

 

OX/XO used to identify the operating panels of sliding windows or doors. X stands for operating while O stands for fixed or stationary

Palladian
Window large, arch top window flanked by smaller windows on each side

 

Panel
Refers to the rail, stile, and glass assembly on a door; similar to window sash

 

Panning Kerf
Narrow groove on the exterior outer frame edge of a unit typically used to accept trim or coil stock

 

Parting Stop
A narrow frame moulding that holds a sash or panel in position

 

Passive Solar Heat Gain
The increase in temperature in a space, object, or structure that results from solar radiation

 

Patterned Glass
Glass that lets light in while obscuring the vision

No terms found

Rail
Horizontal members of a window sash or door panel

 

Reinforced Mull
Mull that uses a structural material (wood, aluminum, LVL, steel) to provide a stronger joint

 

Relative-Heat Gain
The total amount of heat gain through a glazing system incorporating U-Factor and Solar Heat Gain

 

Reverse Cottage/Oriel Window
Double hung window where the upper sash is larger than the lower sash

 

Rough Opening
Opening in a wall for the installation of a window or door. The rough opening is larger than the actual unit to allow for shimming and insulating

 

R-Value
Thermal resistance of a material. The higher the R-Value, the less heat is transmitted through the material

Sash
Rail, stile, and glass components joined together to form the venting capability of a window

 

Sash Glazed/Sash Set
Fixed window with a separate sash and frame intended to replicate the look of nearby venting windows

 

Sash Lift
Handle for raising and lowering the sash in a double hung window. Also called a lift

 

Sealed Unit
Double or triple glass window panes separated by a space usually filled with an insulating gas and separated with a spacer

 

Segmented Arch
Multiple arch windows mulled together to create a single continuous arch

 

Shading Coefficient
Decimal value which is the solar gain of the window, divided by the solar gain for a clear single glass window of the same size. The shading coefficient of a clear, double glazed unit is about 0.85 to 0.9

 

Shading Coefficient
Ratio of solar heat gain through a window to the solar heat gain through a single light (3mm thick) of clear glass. The smaller the number, the better the window is at stopping solar heat entry

 

Shims
A wedge usually made of wood used to plumb and/or level a window or door in the rough opening

 

Sidelite
A narrow panel installed beside a door for decorative and natural light purposes

 

Sill
The bottom horizontal piece of the door system that sits on the floor, also called the threshold

 

Sill Extender/Nose
Traditional exterior trim component that attaches underneath and extends out beyond the sill. Also called a sill nose

 

Sill Track
The track at the bottom of a sliding glass door frame

 

Simulated Divided Light (SDL)
Use of exterior and interior grille with no spacer between the glass panes; used to simulate the look of a window with multiple glass lites

 

Single Hung
Double hung style window where only the bottom sash operate

 

Sliding Door
Door with two or more panels, where one panel slides horizontally past the other. Also called gliding door

 

Sliding Window
Window with two or more sashes, where one sash slides horizontally past the other. Also called gliding window

 

Solar Energy Reflectance
The percentage of solar energy that is reflected from the glass surface(s)

 

Solar Energy Transmittance
The percentage of UV, visible, and near infrared energy that is transmitted through the glass

 

Solar Heat Gain Coefficient
The fraction of incident solar radiation that enters a building as heat. The smaller the number, the better the glazing is at preventing solar heat gain

 

Sound Transmission Class (STC)
Rating system used to measure how much sound is transferred through windows or doors (also see OITC)

 

Spacer
The linear material that separates and maintains the space between the glass surfaces of insulating glass units

 

Stile
A vertical member of sash or door panel

 

Stool
Flat, interior trim member located at the sill of a window or door, typically extending into the room and horizontally beyond the extension jambs

 

Stop Bead
A strip of molding along the inside of the window frame in which the sash closes against

Tempered Glass
Safety glass that is stronger than annealed glass and breaks into small pieces

 

Thermal Break
An element made of material with relatively low thermal conductivity, which is inserted between two members having high thermal conductivity, in order to reduce the heat transfer

 

Threshold
Decorative wood component used as a transition door sill to the interior flooring

 

Thumb-turn
The component of a door that extends or retracts a deadbolt or latch bolt by grasping with the thumb and fingers and turning

 

Tilt Latch
Mechanism that unlocks the sash and allows it to tilt in from the main frame

 

Tinted Glass
Glass that slightly reduces heat gain

 

Top Hung Insect Screen
Insect screen used on patio doors that are secured from the top resulting in smoother operation

 

Traditional
Combine practicality and accessibility with a classic look. Traditional homes do not go out of style

 

Transom
A framed glass unit located above an entryway or window

 

Triple Pane
Glass construction consisting of three distinct layers of glass and two air specs

 

True Divided Lite (TDL)
Windows and doors in which multiple smaller glass lites are framed in a single sash or panel

U-Factor
The reciprocal of R-Value, measure the heat flow rate through a given material. The lower the U-Factor, the less heat is transmitted

 

Ultraviolet (UV)
Light present in sunlight, a portion of this solar energy is responsible for fading in materials

 

Unobstructed Glass Opening
Visible glass area

Vapour Barrier
Watertight material used to prevent moisture migration around windows and doors

 

Vent Limiter
Device that restricts window operation and cannot be disengaged without tools or special effort

 

Venting Unit
Window or door that opens/operates

 

Vinyl polyvinyl chloride (PVC)
Material that is very durable and resistant to corrosion

 

Visible Indoor Reflectance
The percentage of visible light that is reflected from the glass surface(s) to the inside. The lower the visible indoor reflectance, the easier it is to see outside when conditions are darker (night, overcast).

 

Visible Light Transmittance
The percentage of light that is transmitted through the glass

Weatherstrip
Foam filled flexible strip attaches to jamb and compresses against the slab when the door is closed to seal the entry against air and moisture

 

Weep Holes
Small holes placed on the exterior of a window or door that allows for water drainage

 

Wind Load
The force on a window or door arising from the impact of the wind on it

No terms found

No terms found

No terms found

+ A

Air Chambers
Small honeycomb shaped spaces within the sashes that help strengthen and also insulate a window

 

Air Infiltration
The amount of air that passes between a window sash and a frame. Measured in cubic feet per minute, per square foot of area. A lower air infiltration number means that there is less air passing through

 

Aluminum Clad
The exterior wood parts of a window covered with extruded aluminum, with a factory-applied finish

 

Apron
Decorative trim positioned directly underneath a window stool and installed flush against the wall

 

Arch Window
Four sided unit with a curved top

 

Argon Gas
An inexpensive,non-toxic, odourless gas used to fill between two or three panes of glass to increase energy efficiency and reduce noise infiltration

 

Art Glass
Decorative glass that comes in a variety of colours, shapes, and patterns used to accent a window or door

 

Astragal
Attached to the latch or passive door allowing for a wider opening in double door applications. the astragal covers the margin between the two doors when they are closed, and contains the weatherstrip

 

Awning Window
Unit hinged at the top and swings outward from the bottom

+ B

Balance Covers
Covers the balance cavity that holds the balance system inside of the jamb

 

Balance Shoe
Attached to the bottom of balances that attaches the balances to the sash. A bar or pin on the sash fits in a slot in the show

 

Balance Spring
Used for counterbalancing a sliding sash, usually linked with a double hung window, so that it can be held in any position

 

Balance System
Used for holding any vertical sliding sash in any position through the use of a spring or weight to counterbalance the weight of the sash

 

Bay Window
Window consisting of three or more units that angle out beyond the wall; often configured with a large centre and two flanking units

 

Beveled Exterior
An angled extension from the frame that adds an aesthetically pleasing dimension to the outside of the window

 

Blind Stop
A sash or window frame member applied to the exterior vertical edge of the side and head jamb in order to serve as a stop for window sash or screens

 

Bottom Rail
The bottom horizontal member of a window sash

 

Bow Window
An angled combination of windows in 3,4, or 5 lite configurations. The windows are attached at 9 and 15 degree angles to project a more circular, arced appearance

 

Brickmould
Cover the rough opening between the frame and the wall. Brick mould allows you to install a new window into an existing opening without disrupting the exterior siding, stucco,or brick. Brick mould comes in a variety of sizes and styles to allow for a custom look

 

Butyl
Rubbery material that seals glass to the spacer, which creates a water and air-tight unit

+ C

Cam Lock and Keeper
Mechanisms that pull the sash together when placed in the locked position

 

Caming
The metal parts of a decorative glass design

 

Casement Window
Unit hinged on the side and opens to the side; allows top to bottom ventilation

 

Casing
Exposed moulding or framing around a window or door, inside or outside, to cover the space between the window frame or the jamb and the wall

 

Caulking
A sealant used to prevent water and air infiltration, used for various construction application

 

Check Rail
The bottom horizontal member of the upper sash and the top horizontal member of the lower sash which meet at the middle of a double hung window

 

Cladding
Sheeting (usually aluminum or vinyl) applied on the exterior of a window to provide extra weather resistance

 

Clear Opening
The size of the opening created when a unit is in a full open position

 

Clerestory
A window located up high on a wall; usually unreachable from ground level

 

Coil Stock
Roll aluminum that is bent into shape to form a transition piece between the unit exterior and siding/trim

 

Combination Unit
Storm window and insect screen contained in a single frame

 

Condensation
Water that collects as droplets on the glass/sash/panel interior or exterior under certain conditions (usually cold surfaces when exposed to humidity)

 

Condensation Resistance Factor
A measurement of a windows effectiveness to reduce the potential for condensation. If a condensation resistance factor is higher, the window will be more efficient

 

Conduction
The process in which heat is directly transmitted through a substance when there is a difference of temperature

 

Contemporary
Can be very eclectic because it is what is popular or used right now. It is always changing and borrows bits and pieces from all different eras

 

Convection
Transfer of heat from a warmer medium to a cooler one

 

Corner Seal Pads
Complete the seal between the sill cap, bottom sweep, and weatherstrip to help block potential pathways where wind-driven moisture can infiltrate the bottom corner of the door system

 

Cornice
An ornamental moulding at the top of the window positioned above the exterior trim

 

Cottage Window
Double hung window where the upper sash is shorter than the bottom sash

 

Craftsman
Defined by low-pitched gable roofs with broad eaves, large front porches, and exposed wooden structural elements. Usually 1-2 stories of wood construction

 

Cylinder Bore
A machining procedure that requires a round hole to accommodate a standard entry set

+ D

Damage Function
Percent of UV and Visible Light energy from the sun that can cause fabric fading. The lower the number, the less potential for fabric fading

 

Daylight Opening
Visible glass area

 

Dead Air Space
The space between the panes of glass in an insulating glass unit

 

Dead Bolt
A bolt engaged by turning a knob or key, rather than by spring action

 

Decorative Drip Cap
Ornamental trim piece located at the of the window above the exterior trim that directs water away from the top of the window

 

Direct Glazed
Glass glazed directly into the frame. Also called direct set

 

Direct Set
Glass glazed directly into the frame. Also called direct glazed

 

Dividers
Components used to simulate individual pieces of glass within a sash/panel. Also called muntin bars, grilles, or grids

 

Door Lite
Individual glass panes within a door panel

 

Door Stop
A fixed object that stops a door from banging against a wall

 

Door Sweep
Flexible moulding attached to the bottom of the slab that creates a seal between the slab and sill to help form a barrier against and moisture infiltration

 

Double Hung
Venting upper and lower sashes in a single frame that slide vertically past one another

 

Double Pane
Two panes of uncoated (non-Low-E) glass with an air filled cavity

 

Dowel Joint
A corner created by precisely boring matching holes into a door rail and style and joining them together with a dowel pin

 

Drip Cap
One-piece aluminum or vinyl over installed above windows or doors that directs water away from the top of the unit

 

Drywall Return
Used on windows where trim where no trim will be used

+ E

Egress
A venting window required by building codes for emergency escape and rescue, typically required in bedrooms and required to meet minimum opening dimensions

 

Egress Code
A code that requires a minimum opening of a window for persons to exit or firefighters to enter a building

 

Electric
Operator a motorized device that provides for remote operation of an awning window

 

Emissivity
The relative ability of a surface to reflect or emit heat by radiation. Measured in U-Value or its inverse, R-Value

 

Energy Star
A government backed program to help consumers identify energy efficient products

 

Equal Lite
Window or door with equally spaced grille bars

 

Escutcheon Plate
Decorative door handle plate that conceals the locking mechanism

 

Exterior Trim
A decorative trim positioned around the exterior perimeter of a window or door

+ F

Fenestration
Refers to an opening in a structure such as windows, doors, and skylights. Can also refer to placement of windows and doors in a building

 

Film
Removable,semi-transparent material that adheres to and helps protect the glass during construction

 

Fixed
Non-venting or non-operable

 

Flashing
Water resistant material that directs water to a drainage plane or to the exterior surface of a building

 

Flashing
Water resistant material that directs water to a drainage plane or to the exterior surface of a building

 

Folding Door
Door unit with multiple hinging panels that can be folded together to create a large,unobstructed opening

 

Foot lock/Foot bolt
Auxiliary lock used on gliding doors to secure the operating panel to the sill

 

Frame
The combination of the header, jambs, and sill that forms a precise opening in which a window sash fits

 

French Casement Window
Unit with two venting sashes that open outward to provide a large center opening with no center point

 

French Door
Hinged doors with large glass area surrounded side stiles and a tall bottom rail

 

Full Divided Lite
Grille intended to replicate the look of a true divided lite unit, consists of an interior and exterior grille, and spacer between the glass panes

 

Full Frame
Frame intended for installation direct to the rough opening; opposite of insert window

+ G

Glass Stop
Removable trim that hold glass in place

 

Glazing
Glass in a window sash or door panel

 

Glazing Bead
Wood or vinyl pieces around the perimeter of the glass that covers the space between the glass edge and sash

 

Glazing Tape
Double sided tape used to adhere glass to the sash and form an airtight and watertight seal

 

Gliding Door
Door with two or more panels, where one panel slides horizontally past the other. Also called sliding door

 

Gliding Window
Window with two or more sashes, where one sash slides horizontally past the other. Also called sliding window

 

Grids
Components used to simulate individual pieces of glass within a sash/panel. Also called muntin bars, grilles, or dividers

 

Grilles
Components used to simulate individual pieces of glass within a sash/panel. Also called muntin bars, dividers, or grids

 

Gusset Plate
Metal plate attached to a window or door to strengthen a window or door joint

+ H

Half Round Window
Half circle unit consisting of a curved top and linear bottom

 

Half-Insect Screen
Insect screen that covers the opening area of the operating sash in hung and gliding/sliding windows

 

Handing
Opening direction of hinging windows and doors. Direction is determined by location of hinge on unit as viewed from the exterior

 

Head
The upper horizontal member of a window

 

Head/Seat Board
Stain grade wood shaped to the angles of a bay or bow window that form the finished upper and lower surfaces

 

Header
The upper horizontal portion of the main frame of a window or door

 

Hinged Glass Panel
Specific to Pella; a glass panel on windows that opens inward to the snap-in, between the glass blinds, shades and grilles

 

Hinges
Mechanisms that allow the door to swing, help insure stability and performance

+ I

Impact Resistant Glass
Laminated glass frequently used in hurricane-prone areas for protection from wind-borne debris

 

Inactive Panel
or Inactive Sash panel or sash that will open only after active panel/sash is opened

 

Insect Screen
A tightly woven mesh attached to a frame. Allows outside air ventilation while keeping insects out

 

Insert Window
A new window unit intended to be installed inside the frame pocket of an existing window

 

Insulating Glass
Two or more panes with a sealed airspace in between, usually filled with argon gas to increase the insulating ability of the glass

 

In-swing
A hinged door panel that swings inside when opened

 

Inter locker
An upright part of a door panel in a sliding glass door which engages with a corresponding piece in an adjacent panel when the door is closed

+ J

Jalousie Window
Louvered window with multiple horizontal glass sections that rotate open or closed

 

Jamb
The vertical sides of a doorway, window, or other opening

 

Jamb Clips
Metal brackets used to secure a unit to the rough opening from the interior

 

Jamb Extension
A piece of wood or vinyl that is used to widen to frame of a window or door. Usually attached to the inside of the frame so any trim can be applied to a wider wall

 

Jamb Liner
Interior frame cover surface where the sash slides on a double hung window

 

J-Channel
Receiver components that surrounds a window intended to hide the seam between the window and siding

+ K

Keeper
The part of the window lock, mounting on the opposing surface of the window, that the lock arm locks under or into to pull the sash into and fully released and fully releases it when opened

 

Keeper Rail
The horizontal section of the sash where the keeper is attached

 

Keeper Stile
The vertical section of the sash where the keeper is attached

 

Keyed Lock
Patio door lock that enables locking and unlocking from the exterior side

 

Krypton Glass
Rare, inert gas that has twice the density of argon gas, but will leak over time

+ L

Latch/Lock
A device that holds the window shut

 

Lift
Handle for raising and lowering the sash in a double hung window. Also called a sash lift

 

Lift Handle
Handle on the bottom of a double hung that makes it easier to raise and lower the sash

 

Lift Rail
A handhold that is continuous across the sash to raise and lower the sash

 

Light to Solar Gain (LSG Ratio)
The ratio of visible transmittance to solar heat gain coefficient

 

Lite
A unit of glass in a window or door. Can be clear, tinted, obscure, coloured, etc

 

Lock
Mechanism used to secure windows and doors into a closed position

 

Lock Handle
A locking mechanism located on the jamb of a window

 

Low E Glass
Glass with a transparent metallic oxide coating applied on or in the glass surface. The coating allows short wave energy to pass through (light), but reflects long wave infrared energy (heat), which improves U-value

+ M

Main Frame
The head, sill, and jambs of a window

 

Masonry Opening
Opening in the brick, stone, or stucco wall where a window or door is installed

 

Meeting Rail
The horizontal sections of a pair of sash that meet when the sashes are closed

 

Meeting Stile
Central location on a sliding window or door where the sashes or panels overlap

 

Modern
Design style created in the early to mid 1900s, which does not change. Uses clean, unadorned materials, and different types of natural materials are used. Polished metal, moulded plywood, and plastic is commonly used

 

Mortise
A hole or recess cut into a part, designed to receive a corresponding projection (tenon) on another part so as to join or lock the parts together

 

Mortise and Tenon
Joint a joint where one piece of wood is inserted into another

 

Mullion
A vertical or horizontal connecting unit between two or more windows

 

Multi-lock
One cam lock lever at the bottom operates multiple locking points to secure the sash to the frame

 

Multi-point
Lock System lock that engages the sash or panel in multiple locations; activated by a single motion

 

Muntin Bar
Components used to simulate individual pieces of glass within a sash/panel. Also called grilles, dividers, or grids

+ N

Nailing Fin
An extrusion that attaches to the window frame and used to secure the unit to the rough opening

 

Nickel Vapour Deposition (NVD)
MasterGrain’s NVD Technology is a patented process that authentically replicates any natural surface. Desirable wood grains are hand selected, then a silicone cast picks up every little detail of the wood grain and is transferred to into a door mould using the NVD Technology. The mold produces fiberglass skins used on MasterGrain doors with random grain depths and all the natural characteristics of real wood making our doors virtually indistinguishable to real wood doors.

 

Night Latch
Latch mechanism on the inside of the top sash that retains the window in a partially open position for ventilation

+ O

Obscure Glass
Glass with a texture or pattern of various degrees of opacity that limits visibility

 

Operator metal arm, gear, and handle used to open and close hinged windows

 

Outdoor Visible Light Reflectance
The percentage of light that is reflected from the glass surface(s)

 

Outdoor/Indoor Transmission Class (OITC)
Measurement standard used to indicate the rate of sound transmission between indoors and outdoors (also see STC)

 

Out-swing
A hinged door panel that swings to the outside when opened

 

OX/XO used to identify the operating panels of sliding windows or doors. X stands for operating while O stands for fixed or stationary

+ P

Palladian
Window large, arch top window flanked by smaller windows on each side

 

Panel
Refers to the rail, stile, and glass assembly on a door; similar to window sash

 

Panning Kerf
Narrow groove on the exterior outer frame edge of a unit typically used to accept trim or coil stock

 

Parting Stop
A narrow frame moulding that holds a sash or panel in position

 

Passive Solar Heat Gain
The increase in temperature in a space, object, or structure that results from solar radiation

 

Patterned Glass
Glass that lets light in while obscuring the vision

+ Q

No terms found

+ R

Rail
Horizontal members of a window sash or door panel

 

Reinforced Mull
Mull that uses a structural material (wood, aluminum, LVL, steel) to provide a stronger joint

 

Relative-Heat Gain
The total amount of heat gain through a glazing system incorporating U-Factor and Solar Heat Gain

 

Reverse Cottage/Oriel Window
Double hung window where the upper sash is larger than the lower sash

 

Rough Opening
Opening in a wall for the installation of a window or door. The rough opening is larger than the actual unit to allow for shimming and insulating

 

R-Value
Thermal resistance of a material. The higher the R-Value, the less heat is transmitted through the material

+ S

Sash
Rail, stile, and glass components joined together to form the venting capability of a window

 

Sash Glazed/Sash Set
Fixed window with a separate sash and frame intended to replicate the look of nearby venting windows

 

Sash Lift
Handle for raising and lowering the sash in a double hung window. Also called a lift

 

Sealed Unit
Double or triple glass window panes separated by a space usually filled with an insulating gas and separated with a spacer

 

Segmented Arch
Multiple arch windows mulled together to create a single continuous arch

 

Shading Coefficient
Decimal value which is the solar gain of the window, divided by the solar gain for a clear single glass window of the same size. The shading coefficient of a clear, double glazed unit is about 0.85 to 0.9

 

Shading Coefficient
Ratio of solar heat gain through a window to the solar heat gain through a single light (3mm thick) of clear glass. The smaller the number, the better the window is at stopping solar heat entry

 

Shims
A wedge usually made of wood used to plumb and/or level a window or door in the rough opening

 

Sidelite
A narrow panel installed beside a door for decorative and natural light purposes

 

Sill
The bottom horizontal piece of the door system that sits on the floor, also called the threshold

 

Sill Extender/Nose
Traditional exterior trim component that attaches underneath and extends out beyond the sill. Also called a sill nose

 

Sill Track
The track at the bottom of a sliding glass door frame

 

Simulated Divided Light (SDL)
Use of exterior and interior grille with no spacer between the glass panes; used to simulate the look of a window with multiple glass lites

 

Single Hung
Double hung style window where only the bottom sash operate

 

Sliding Door
Door with two or more panels, where one panel slides horizontally past the other. Also called gliding door

 

Sliding Window
Window with two or more sashes, where one sash slides horizontally past the other. Also called gliding window

 

Solar Energy Reflectance
The percentage of solar energy that is reflected from the glass surface(s)

 

Solar Energy Transmittance
The percentage of UV, visible, and near infrared energy that is transmitted through the glass

 

Solar Heat Gain Coefficient
The fraction of incident solar radiation that enters a building as heat. The smaller the number, the better the glazing is at preventing solar heat gain

 

Sound Transmission Class (STC)
Rating system used to measure how much sound is transferred through windows or doors (also see OITC)

 

Spacer
The linear material that separates and maintains the space between the glass surfaces of insulating glass units

 

Stile
A vertical member of sash or door panel

 

Stool
Flat, interior trim member located at the sill of a window or door, typically extending into the room and horizontally beyond the extension jambs

 

Stop Bead
A strip of molding along the inside of the window frame in which the sash closes against

+ T

Tempered Glass
Safety glass that is stronger than annealed glass and breaks into small pieces

 

Thermal Break
An element made of material with relatively low thermal conductivity, which is inserted between two members having high thermal conductivity, in order to reduce the heat transfer

 

Threshold
Decorative wood component used as a transition door sill to the interior flooring

 

Thumb-turn
The component of a door that extends or retracts a deadbolt or latch bolt by grasping with the thumb and fingers and turning

 

Tilt Latch
Mechanism that unlocks the sash and allows it to tilt in from the main frame

 

Tinted Glass
Glass that slightly reduces heat gain

 

Top Hung Insect Screen
Insect screen used on patio doors that are secured from the top resulting in smoother operation

 

Traditional
Combine practicality and accessibility with a classic look. Traditional homes do not go out of style

 

Transom
A framed glass unit located above an entryway or window

 

Triple Pane
Glass construction consisting of three distinct layers of glass and two air specs

 

True Divided Lite (TDL)
Windows and doors in which multiple smaller glass lites are framed in a single sash or panel

+ U

U-Factor
The reciprocal of R-Value, measure the heat flow rate through a given material. The lower the U-Factor, the less heat is transmitted

 

Ultraviolet (UV)
Light present in sunlight, a portion of this solar energy is responsible for fading in materials

 

Unobstructed Glass Opening
Visible glass area

+ V

Vapour Barrier
Watertight material used to prevent moisture migration around windows and doors

 

Vent Limiter
Device that restricts window operation and cannot be disengaged without tools or special effort

 

Venting Unit
Window or door that opens/operates

 

Vinyl polyvinyl chloride (PVC)
Material that is very durable and resistant to corrosion

 

Visible Indoor Reflectance
The percentage of visible light that is reflected from the glass surface(s) to the inside. The lower the visible indoor reflectance, the easier it is to see outside when conditions are darker (night, overcast).

 

Visible Light Transmittance
The percentage of light that is transmitted through the glass

+ W

Weatherstrip
Foam filled flexible strip attaches to jamb and compresses against the slab when the door is closed to seal the entry against air and moisture

 

Weep Holes
Small holes placed on the exterior of a window or door that allows for water drainage

 

Wind Load
The force on a window or door arising from the impact of the wind on it

+ X

No terms found

+ Y

No terms found

+ Z

No terms found