Fall Checklist: Getting Windows and Doors Ready for Winter
Before a Capital Region winter, replace failed weatherstripping, adjust door thresholds, swap storm panels, clear weep holes and gutters, and check the exterior caulk. Weatherstripping and threshold adjustment deliver the most comfort per dollar of anything on the list.
Fall is the last convenient window to fix small problems before they become winter problems. Everything on this list is cheaper and easier in October than in January.
Ranked roughly by how much difference each one makes.
Highest value first
- Replace failed weatherstripping on exterior doors. It compresses permanently over thousands of closings and it is the largest single air leak most people can fix themselves for twenty dollars.
- Adjust every exterior door threshold so the sweep contacts along its full length. Free, five minutes per door, and it usually eliminates the floor draft entirely.
- Swap storm windows from screen to glass panels. On a house with storms this is the single biggest thermal change of the season.
- Check the weatherstripping at window meeting rails, which is where double hung air leakage concentrates.
- Clear the gutters. Blocked gutters contribute directly to ice dams, which cause the water damage that appears at windows.
- Clear weep holes before winter so condensation can drain rather than freezing in the sill channel.
- Inspect and repair the exterior caulk joint around windows and doors before freeze-thaw cycling opens it further.
- Check that basement window wells are clear and draining, since a well full of leaves fills with water and then ice.
- Test that every window actually latches. A window that looks closed but is not latched is not compressed against its weatherstripping.
- Confirm storm doors have a functioning wind chain before the first March windstorm.
The latch point most people miss
On a double hung window, the lock is not just a security device, it is a compression device. The cam action pulls the two sashes together at the meeting rail and pulls them tight against the weatherstripping. A window that is closed but unlatched is sitting loose against its seals, and on a windy night it leaks substantially more than a latched one. Walk the house in the fall and latch every window, including the ones in rooms nobody uses. It costs nothing and on a house with twenty windows it is a real measurable difference in infiltration.
What to do about a room that was cold last winter
Before assuming you need new windows, find out what the actual problem is. On a windy day, hold a lit incense stick around the window perimeter and watch the smoke. If it bends at the sash, the weatherstripping is the problem and that is a cheap fix. If it bends at the trim where it meets the wall, the gap between the window frame and the rough opening was never insulated, which you can fix by removing the interior casing, foaming the gap with low-expansion foam and reinstalling the trim. If the smoke does not move at all but the room still feels cold and drafty, that is convection off cold glass rather than air leakage, and better glass is genuinely the answer. Those three findings lead to three very different projects.
Schedule the bigger work now
If the fall inspection turns up something that needs professional work, book it now rather than in January. Window and door manufacturing lead times run three to six weeks, and contractor scheduling is easier in late fall than at any other time except deep winter. A rotted sill found in October can be repaired before it takes another freeze-thaw season. The same rot found in March has had a full winter of water working on it.
Ranges reflect typical Capital Region projects and are for planning only. Every Sundog quote is written, itemized, and free.
Frequently asked questions
What is the most important thing to do before winter?
Replace failed weatherstripping on exterior doors and adjust the thresholds. Those two items address the largest, most noticeable air leaks in most homes, they cost almost nothing, and they take under an hour for the whole house. Everything else on the list matters less.
Do I really need to latch every window?
Yes, and it makes a genuine difference. On a double hung, the lock pulls the sashes together and compresses them against the weatherstripping. An unlatched window is sitting loose against its seals and leaks noticeably more. It costs nothing and takes ten minutes for a whole house.
When should I swap my storm windows over?
Once overnight temperatures are consistently in the forties, typically early to mid October in the Capital Region. Doing it before the first hard frost is the goal. If you have self storing storms, this is just sliding the panels, which is one of the main reasons to choose that style.
Is it too late to replace windows in the fall?
No. Manufacturing lead times run three to six weeks, so calling in October generally means installation in November or December, which is a perfectly good time to do this work. Windows are replaced one opening at a time and the house never sits open. Late fall and winter often have better scheduling availability than spring.
How do I find where a draft is coming from?
Hold a lit incense stick near the window or door perimeter on a windy day and watch the smoke. Movement at the sash means weatherstripping. Movement at the trim means the perimeter gap was never insulated. No movement but a cold feeling means convection off cold glass, which is a glass problem rather than an air leak.
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