How U-Factor Works In Real-World Window Performance U-factor tells you how much heat passes through a window assembly, and lower numbers mean better insulation. In a climate with damp winters, warm summers, and plenty of shoulder-season temperature swings, window performance has a direct effect on comfort. U-factor focuses on insulation, while SHGC tells you how much solar heat a window lets in. If a window has a good U-factor, it slows heat transfer through the
Anne Arundel County Window Replacement Permit Requirements Explained
When A Window Replacement Needs A Permit For many homeowners, the first question is simple: do I need a permit to replace windows in Crofton MD? The short answer is that some replacements are permit-free, while others are not. The permit issue usually turns on whether the new unit fits the existing rough opening, whether the wall is load-bearing, and whether the room still meets safety and code requirements after the install. Structural work, even on a single op