"We've had our siding redone and new windows and doors installed. We're really happy with the results! We've used Suburban for years. Our children have also used Suburban, it's kind of a family tradit... » more
- Ralph and Christine Helm of Bettendorf, Iowa


» More Testimonials

R-value

A measure of the resistance of a glazing material or fenestration assembly to heat flow. It is the inverse of the U-factor (R = 1/U) and is expressed in units of hr-sq ft-ºF/Btu. A high-R-value window has a greater resistance to heat flow and a higher insulating value than one with a low R-value.

Not quite sure what the proper home improvement terms are? Let us help. We have put together a glossory for you to learn a little bit more about Home Improvement Glossary and Terms

For furthur reading please see our Learn the Basics Homepage.