What January Rain Teaches You About Your Windows and Doors

San Diego doesn't get much weather, which is exactly why the weather we do get is so useful. For eleven months of the year, a tired window and a good one look identical. Then a real storm blows in off the Pacific, the rain comes sideways for an afternoon, and your house files its annual report.

If you spent part of this winter laying towels on a sill or listening to a front door whistle, don't just dry everything off and forget about it until next year. Those small annoyances are data — and February, while the memory is fresh, is the right time to read them.

A leak at the sill is rarely about the glass

Water on the inside of a windowsill usually means the seal between the window and the wall has failed, not the window itself. Caulking dries out and splits, flashing was installed wrong decades ago, or stucco has cracked at the corners where the frame meets the wall. This matters because water that shows up on the sill is only part of the story — some of it is traveling down inside the wall, where it feeds rot and stains you won't see for years. A leak that appears in the same corner every winter deserves an open-the-wall look, not another bead of caulk.

Fogged glass means the window has already told you its age

That milky haze between panes of a dual-glazed window is a failed seal: the insulating gas is gone, moisture has moved in, and no amount of cleaning will fix it. The window still keeps rain out, but it has quietly stopped doing its other job — insulating. In ocean-adjacent neighborhoods where salt air ages hardware and seals faster, we see windows fog a decade earlier than the same units would inland. If your rooms near the water always feel chilly, fogged glass is often part of why — we wrote about the rest in why ocean-adjacent homes feel colder.

Doors that swell, stick, and whistle

A door that drags in January and swings freely in July is absorbing moisture — common in older wood doors that were never properly sealed on the top and bottom edges, the two faces nobody paints. Whistling and visible daylight at the edges mean the weatherstripping is shot or the slab has warped. Sometimes the fix is an afternoon of adjustment; sometimes the frame itself is out of square because the house has settled, and the door is just the messenger. Entry doors take the worst of the rainy season, which is why we covered them in depth in our entry upgrades post.

Patch, replace, or fold it into a bigger project?

Here's the honest framework we give homeowners:

• One bad seal or one swollen door — repair it now, before next winter compounds the damage.
• Several fogged or single-pane windows — a whole-house window replacement usually beats piecemeal swaps, both in cost per opening and in how the house looks from the street.
• Windows failing in a house you're already planning to remodel — wait and do it once. New openings, relocated windows, and bigger glass are far cheaper to do during a whole-home remodel than after one.

One practical note for 2022: window orders are running on longer lead times than usual, so if replacement is in your plans this year, the measuring and ordering should happen months before you want installation.

Walk your house this weekend while the winter's evidence is still visible — the water stains, the stiff latches, the drafty corners. Then request a consultation or give us a call — tell us what the rain taught you, and we'll help you decide what's a repair and what's an opportunity.