All summer, we talk about humidity swelling wood enough to make doors and windows stick. Fall reverses that problem, and it catches just as many homeowners off guard.
As the outside air dries out and temperatures drop, the wood in your doors and window sashes gives back the moisture it picked up over the summer. The fibers contract, and a door or window that was snug, even a little too snug, in August can suddenly have a gap it didn’t have before. A door that dragged all summer might swing freely now. A window that sealed tightly might let in a draft it never had in July.
This is one of the more confusing seasonal patterns homeowners run into, because it feels backwards. The same door that needed attention two months ago for being too tight now needs attention for the opposite reason. Neither problem means something is broken. Both are the same piece of wood responding to the moisture in the air around it.
The tricky part is timing. A lot of people wait until a draft is obvious and uncomfortable before doing anything about it, usually sometime in November or December, once the heat is running constantly and the gap is easy to feel. September and October are actually the better window to catch this, because the change is happening gradually and the fixes are simpler while the weather is still mild.
What’s worth checking this time of year:
- Weatherstripping that looks compressed, cracked, or like it’s pulling away from the frame, since that’s the first thing to lose its seal as wood shifts.
- Storm windows and screens that should swap easily but suddenly stick or drag.
- Sashes and door edges that no longer meet the frame the way they did over the summer.
None of this usually calls for a full replacement. Weatherstripping is a low-cost swap. A door that’s shifted slightly out of alignment is typically a hinge adjustment, not a new door. The goal at this time of year isn’t to fix everything at once, it’s to catch the small stuff before the cold weather makes it a bigger, less comfortable problem.
If something in your house feels different than it did a month ago, that’s worth a look now, while the fix is still simple.