Visible Transmittance (VT) measures how much light comes through a window’s glass package. The visible transmittance is an optical property that indicates the amount of visible light transmitted. VT is expressed as a number between 0 and 1. The higher the VT, the more light is transmitted. Roofing & More offers windows with very low visible transmittance, so light doesn’t come through the windows and fade your floors, furniture and window dressings.
The lower a window’s air leakage rating, the less air will pass through cracks in the window assembly. Our windows achieve some of the lowest AL ratings on the market.
Have you ever noticed water droplets forming on interior window glass? Condensation Resistance (CR) measures the ability of a window to resist the formation of condensation on the interior surface of that window. The higher the CR rating, the better that product is at resisting condensation formation. CR is expressed as a number between 0 and 100. We make sure our customers understand the importance of choosing a window with a low CR rating.
If you are considering replacing the windows in your home in Arlington, Alexandria, Herndon, Chantilly, or Sterling your first step should be to call or contact Roofing & More for a free, no obligation estimate. We’ll go over your window options and help you make the right decision for the long-term safety and comfort of your family.