Technical Data

Glazing Options & Related Visible Light & Solar Heat Gain Transmittance


All Artistic Skylights are available with either domed, pyramid or flat acrylic glazing, or flat glass glazing. Acrylic glazing is available in three colours:

1.CLEAR– recommended when the maximum amount of light is desired.

2.BRONZE 2412–transparent material used to reduce interior solar heat gain, control glare, and prevent bleaching of interior furnishings while permitting clear vision to exterior.

3.WHITE 2447–translucent material used for light diffusion, reduced heat and glare, and privacy.

Related Visible Light & Solar Heat Gain Transmittance

U-Value (Winter Nighttime)VLTSHGC
GlazingDual GlazeTriple GlazeDual GlazeTriple GlazeDual GlazeTriple Glaze
Bronze 2412N/AN/A50%45%.48.44
White 2447N/AN/A48%45%.50.46

* Values Based on glazing paired with clear glazing.

** Values from ASHRAE Handbook of fundamentals.

*** Material thickness not listed, assume .177″


U-Factor vs. R-Value

The biggest difference between 1U-Factor & R-Value is that U-factor measures the rate of heat transfer (loss) while R-Value measures the resistance to heat loss. R-Value is a measure of conductance & resistance. A product with high conductance will conduct heat quickly, like a hot pan on the stove or a single pane of glass on a cold day. U-factor, on the other hand, takes into account more than conductance. It also is affected by the airflow (convection) around the skylight and the emmissivity (radiated or reflected heat) of the glazing.

1U-Factor: measures how well a product prevents heat from escaping a home or building. U-Fator ratings generally fall between 0.20 & 1.20. The lower the value, the better a product is at keeping heat inside the building. This is typically important during the winter heating season in colder climates.


Tempered Glass4 times stronger than standard glass
Acylic20 times stronger than standard glass
Polycarbonate200 times stronger than standard glass
MaterialThicknessFlame Spread (GWL)Smoke Developed
Polycarbonate1/8?-1/4?45 -60400-500
GlassNon Combustible
For further information please contact:

255 Regina Rd.
Woodbridge, ON. L4L 8M3 Canada
Toll: 1.866.878.3663
Tel: 416.747.7233
Fax: 416.747.6630


Print Friendly, PDF & Email