Page 3 of the Windows & Drafts topic archive. Return to page one for the full topic guide.
For a causes-and-fixes approach, inspect the exact component, look for movement, gaps, moisture or wear, and make the smallest reversible adjustment before buying parts. The goal is to confirm the next decision for window.
For this “what to check first” angle, inspect the exact component, look for movement, gaps, moisture or wear, and make the smallest reversible adjustment before buying parts. The goal is to confirm the next decision.
Replace weatherstripping when it is torn, permanently flattened, missing sections or no longer contacts the closed door or window. A visible gap or repeat draft after adjustment is a stronger signal than age alone.
Start by locating the air leak, then use removable weatherstripping, rope caulk, window film or a properly fitted draft seal. Do not permanently seal a window that must open for egress or ventilation.