Replacing an old or damaged door is often one of the most cost-effective home improvements you can make. According to the Zonda 2024 Cost vs. Value Report , certain projects like garage door replacements can offer a staggering .
A primary technical justification for door replacement is reducing air leakage. Older doors, particularly those with single-panel designs or degraded weatherstripping, contribute to the "stack effect" where conditioned air escapes through gaps. door replacement
A controlled study by the National Institute of Building Sciences (2023) measured that replacing a poorly sealed, non-insulated wood door with a polyurethane-core fiberglass door reduced air infiltration by an average of 47%. This translates to a 5-10% reduction in annual heating and cooling costs in temperate climates. Replacing an old or damaged door is often