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| WindowCraft, Inc. Windows, Doors, Glassrooms, Patio Lattice Serving North Texas and OklahomaWindow Terminology |
door frames which are combinations of the above materials. The newest materials are synthetic woods made from
wood fibers and expanded PVC (solid material, not tubular). These materials look identical to solid wood and can
be painted custom colors, however, are more resistant to water and insect damage. Complete product lines are not
yet available; however, WindowCraft does currently offer some products. Many moulding and trim accessories are
being used on our current projects. We strive to keep abreast of the latest technology in order to offer the finest
products.
There are more than 4,000 windows and door manufacturers in the United States. WindowCraft has selected 12
manufacturers to comprise a complete offering of the latest technology. WindowCraft offers numerous
combinations of all types of window materials from manufacturers considered leaders in the industry.
WindowCraft Window Terminology
Frame - The perimeter housing which is screwed or nail into the structural opening.
Sash - The housing for the glass which usually opens and closes (fixed windows can have sashes) and seals into
the frame in the closed position.
Tilt Sash - Hardware which allows the sash on a hung window (sash slides verically and is hung to frame by a
counterbalance mechanism) to pivot at the bottom and swing inward for cleaning the outside surface from the
inside of the home.
Balance - Short for counter balance. A springlike mechanism which keeps the sash in a hung window in any open
position counteracting gravity.
Lock & Keeper - The locking mechanism which deters forced entry. Keepers are receptical of the lock's bolt.
I.G. - Insulated Glass. Two or more sheets of glass which hve been hermically sealed trapping "dead air".
Float Glass - Optically pure glass required for insulated glass.
Sill - The bottom of the window frame
Stool - The interior trim shaped like a shelf which abuts the window sill.
Jamb - The two vertical sides of the window frame.
Header - The top horizontal piece of the window frame.
Clad - A surface covering, coating, or lamination which gives different characteristics or aesthetics to the base
structural material.
Bay - Three windows with two angular mullions which creates a projection.
Bow - Four or more windows with three or more equal angular mullions which create a projection.
Continuous Arch - A fixed or operating window that uses one continuous piece as the two vertical jambs and
header of the frame.
Eyebrow - A window in which the header is bent in a constant radius. This term is used in the aluminum and vinyl
window industry.
Segment - Wood window terminology for eyebrow.
Eliptical - A window in which the header is bent in a non-constant radius (a dissected horizontal oval).
Rakehead - A window with a straight line angled header in the shape of a trapezoid (creates a long leg, short leg).
Lites - Each piece or pane of glass (whether actual or simulated) in a window or door is called a lite.
Divided Lites - Within each sash the glass is either a whole lite (one lite) or subdivided into divided lites.
Colonial Lites - The glass has been divided equally horizontally and vertically into divided lites.
Muntins - The physical dividers of the glass creating divided lites.
Grilles - Same as muntins
Grids - Sames as muntins
Prairie Lites - Muntins are positioned an equal distance from the edge of the sash (usually 4") rather than dividing
the glass equally horizontally and vertically.
Divided Lite Types:
TDL - True Divided Lite - Each lite is cut and installed into the muntins separately
SDL - Simulated Divided Lite - A single lite sash which has applied muntins on the interior and exterior surface.
Sometimes with insulated glass a third set of muntins is sealed between the glasses to block daylight and replicate
the air spacer .
GBG - Grilles between glass - Muntins are sealed between the two pieces of insulated glass.
FS - Full Surround Grilles - A wood interior removable grill which has a perimeter frame and is shipped as one
piece grillwork from the factory.
KD - Knock Down Grills - A wood interior removable grill which is shipped unassembled from the factory as
vertical and horizontal pieces.
WindowCraft Window Styles/Models
Double Hung - A window in which both sashes are hung from the frame by a balance. Vertually all double hung
windows include tilt sashes.
Single Hung - A window in which the bottom sash is hung from the frame by a balance. The top sash is fixed
closed or, more likely, the top glass is glazed directly to the frame.
Slider - Short for horizontal slider, either one or both sashes slide sideways.
Casement - A window in which the sash is hinged on the jamb and swings outward.
Awning - A window in which the sash is hinged at the header and swings outward.
Picture Window - A window in which the sash is fixed closed or the glass is direct glazed to the frame (direct set).
Hopper - A window which is hinged at the sill and swings inward. Generally used in basements with a maximun
height of 36"
WindowCraft Glass and Energy Terminology
Argon - An inert, nontoxic gas used in insulating windows to improve the insulating value of sealed glass units.
BTU - An abbreviation for British Thermal Unit - the heat required to increase the temperature of one pound of
water one degree Fahrenheit.
Condensation - The accumulation of water vapor from the air's humidity on any cold surface whose temperature is
below the dew point, such as a cold window glass or frame that is exposed to humid indoor air.
Conduction - Heat transfer through a material. Heat flows from higher temperature area to a lower temperature one.
Emissivity - The relative ability of a surface to reflect heat, with emissivity facors ranging from 0.00 to 1.0.
Low-Emittance (Low E) Coating - Microscopically thin, virtually invisable, metal or metallic oxide layers deposited
on a lite of glass and sealed in an insulating glass unit to reduce the U-factor by suppressing the rediant heat flow.
NFRC - National Fenestration Rating Council.
Passive Solar Heat Gain - Solar heat that passes through a material and is captured naturally, not by mechanical
means.
R Value - A measure of the resistance of a material to heat flow. It is the inverse of the U-Factor (R=1/U).
Shading Coefficient - A glass measurement comparing solar heat transmission, related to 1/8 inch clear glass. It is
being phased out in favor of the solar heat gain coefficient, and is approximately equal to the SHGC multiplied by
1.15.
Solar Heat Gain Coefficient - The fraction of solar radiation transmitted through a window. The SHGC has
replaced the shading coefficient as the standard indicator of a window's shading ability. It is expressed as a
percentage. The lower a window's SHGC, the less solar heat it transmits and the greater its shading ability.
U-Factor (U Value) - A measure of the rate of non-solar heat loss or gain through a material or assembly. It is
expressed in units of BTU/*F x Sq.Ft. x Hr. Values are normally given for NFRC/ASHRAE winter conditions of
0*F (18*C) outdoor temperature, 70*F (21*C) indoor temperature, 15 mph wind, and no solar load.
Visible Transmittance - The percentage or fraction of the visible spectrum (380 to 720 nanometers), weighted by
the sensitivity of the eye, that is transmitted through the glazing.
wood fibers and expanded PVC (solid material, not tubular). These materials look identical to solid wood and can
be painted custom colors, however, are more resistant to water and insect damage. Complete product lines are not
yet available; however, WindowCraft does currently offer some products. Many moulding and trim accessories are
being used on our current projects. We strive to keep abreast of the latest technology in order to offer the finest
products.
There are more than 4,000 windows and door manufacturers in the United States. WindowCraft has selected 12
manufacturers to comprise a complete offering of the latest technology. WindowCraft offers numerous
combinations of all types of window materials from manufacturers considered leaders in the industry.
WindowCraft Window Terminology
Frame - The perimeter housing which is screwed or nail into the structural opening.
Sash - The housing for the glass which usually opens and closes (fixed windows can have sashes) and seals into
the frame in the closed position.
Tilt Sash - Hardware which allows the sash on a hung window (sash slides verically and is hung to frame by a
counterbalance mechanism) to pivot at the bottom and swing inward for cleaning the outside surface from the
inside of the home.
Balance - Short for counter balance. A springlike mechanism which keeps the sash in a hung window in any open
position counteracting gravity.
Lock & Keeper - The locking mechanism which deters forced entry. Keepers are receptical of the lock's bolt.
I.G. - Insulated Glass. Two or more sheets of glass which hve been hermically sealed trapping "dead air".
Float Glass - Optically pure glass required for insulated glass.
Sill - The bottom of the window frame
Stool - The interior trim shaped like a shelf which abuts the window sill.
Jamb - The two vertical sides of the window frame.
Header - The top horizontal piece of the window frame.
Clad - A surface covering, coating, or lamination which gives different characteristics or aesthetics to the base
structural material.
Bay - Three windows with two angular mullions which creates a projection.
Bow - Four or more windows with three or more equal angular mullions which create a projection.
Continuous Arch - A fixed or operating window that uses one continuous piece as the two vertical jambs and
header of the frame.
Eyebrow - A window in which the header is bent in a constant radius. This term is used in the aluminum and vinyl
window industry.
Segment - Wood window terminology for eyebrow.
Eliptical - A window in which the header is bent in a non-constant radius (a dissected horizontal oval).
Rakehead - A window with a straight line angled header in the shape of a trapezoid (creates a long leg, short leg).
Lites - Each piece or pane of glass (whether actual or simulated) in a window or door is called a lite.
Divided Lites - Within each sash the glass is either a whole lite (one lite) or subdivided into divided lites.
Colonial Lites - The glass has been divided equally horizontally and vertically into divided lites.
Muntins - The physical dividers of the glass creating divided lites.
Grilles - Same as muntins
Grids - Sames as muntins
Prairie Lites - Muntins are positioned an equal distance from the edge of the sash (usually 4") rather than dividing
the glass equally horizontally and vertically.
Divided Lite Types:
TDL - True Divided Lite - Each lite is cut and installed into the muntins separately
SDL - Simulated Divided Lite - A single lite sash which has applied muntins on the interior and exterior surface.
Sometimes with insulated glass a third set of muntins is sealed between the glasses to block daylight and replicate
the air spacer .
GBG - Grilles between glass - Muntins are sealed between the two pieces of insulated glass.
FS - Full Surround Grilles - A wood interior removable grill which has a perimeter frame and is shipped as one
piece grillwork from the factory.
KD - Knock Down Grills - A wood interior removable grill which is shipped unassembled from the factory as
vertical and horizontal pieces.
WindowCraft Window Styles/Models
Double Hung - A window in which both sashes are hung from the frame by a balance. Vertually all double hung
windows include tilt sashes.
Single Hung - A window in which the bottom sash is hung from the frame by a balance. The top sash is fixed
closed or, more likely, the top glass is glazed directly to the frame.
Slider - Short for horizontal slider, either one or both sashes slide sideways.
Casement - A window in which the sash is hinged on the jamb and swings outward.
Awning - A window in which the sash is hinged at the header and swings outward.
Picture Window - A window in which the sash is fixed closed or the glass is direct glazed to the frame (direct set).
Hopper - A window which is hinged at the sill and swings inward. Generally used in basements with a maximun
height of 36"
WindowCraft Glass and Energy Terminology
Argon - An inert, nontoxic gas used in insulating windows to improve the insulating value of sealed glass units.
BTU - An abbreviation for British Thermal Unit - the heat required to increase the temperature of one pound of
water one degree Fahrenheit.
Condensation - The accumulation of water vapor from the air's humidity on any cold surface whose temperature is
below the dew point, such as a cold window glass or frame that is exposed to humid indoor air.
Conduction - Heat transfer through a material. Heat flows from higher temperature area to a lower temperature one.
Emissivity - The relative ability of a surface to reflect heat, with emissivity facors ranging from 0.00 to 1.0.
Low-Emittance (Low E) Coating - Microscopically thin, virtually invisable, metal or metallic oxide layers deposited
on a lite of glass and sealed in an insulating glass unit to reduce the U-factor by suppressing the rediant heat flow.
NFRC - National Fenestration Rating Council.
Passive Solar Heat Gain - Solar heat that passes through a material and is captured naturally, not by mechanical
means.
R Value - A measure of the resistance of a material to heat flow. It is the inverse of the U-Factor (R=1/U).
Shading Coefficient - A glass measurement comparing solar heat transmission, related to 1/8 inch clear glass. It is
being phased out in favor of the solar heat gain coefficient, and is approximately equal to the SHGC multiplied by
1.15.
Solar Heat Gain Coefficient - The fraction of solar radiation transmitted through a window. The SHGC has
replaced the shading coefficient as the standard indicator of a window's shading ability. It is expressed as a
percentage. The lower a window's SHGC, the less solar heat it transmits and the greater its shading ability.
U-Factor (U Value) - A measure of the rate of non-solar heat loss or gain through a material or assembly. It is
expressed in units of BTU/*F x Sq.Ft. x Hr. Values are normally given for NFRC/ASHRAE winter conditions of
0*F (18*C) outdoor temperature, 70*F (21*C) indoor temperature, 15 mph wind, and no solar load.
Visible Transmittance - The percentage or fraction of the visible spectrum (380 to 720 nanometers), weighted by
the sensitivity of the eye, that is transmitted through the glazing.