How Windows Make (or Break) Wall Performance, Illustrated

The thermal performance of your building’s walls is only as strong as the weakest link, and windows are too often that weak link. Even if you’ve gone to great lengths to build a super-insulated high performance wall, if you poke that wall full of holes, then plug those walls with mediocre windows, you will get a poorly-performing wall. Bad windows will ruin the best wall assemblies. Conversely, good windows can…