Signs You Need New Windows
For many people, replacing windows isn’t something that comes up very often. The average homeowner moves into a property, and doesn’t think twice about what decade their windows or [...]
Solar Energy – Energy released by the sun from 3 distinct regions of the solar light spectrum
- UV rays 3%
- Visible Light 45%
- Near Infrared (NIR) 52% (where the heat we experience comes from)
Fading Transmission
- How much fading potential comes through a window
- Light in the spectral region from 300 to 700 nanometers
- The lower the Fading Transmission number the better the glass is for reducing fading potential for carpets and furniture
Visible Light Transmittance (VLT)
- How much light passes through a window
- This is the visible light that we see
- The higher the VLT%, the more light is transferred through a window
U-Value or U-Factor
- How much heat transfers through a window
- The lower the U-Value, the slower the rate of heat flow, thereby better insulation performance
EGRESS
A bedroom without an exterior door will require an EGRESS complaint window
*All 4 criteria are required to pass EGRESS
STEP 1
20” minimum width.
(net clear opening)
STEP 2
24” minimum height.
(net clear opening)
STEP 3
Minimum Total
5.7 sqft. vent space.
(net clear opening)
STEP 4
Maximum 44” sill height off finish floor.
General Window Anatomy
