Whole window insulation performance (Rw Value) is shown below – not just the glass or frames by themselves like our competitors. A high number means better insulation.
R values for products sold by Ameribuild represent whole window (Rw) values, not just the glass or frames by themselves, based on metric NFRC testing data. European testing methods may yield different results. Other data sourced from publicly available sources, including MBIE and BRANZ. All data was correct at the time of publication.