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Roofing questions

How do you prevent roof leaks before the rainy season?

A short pre-winter checklist that saves a lot of trouble once the rains start.
Summary

Before the LA rains start, do five things: clear the gutters and valleys so water can leave the roof, check and reset slipped or cracked tiles and shingles, look at the flashing around the chimney, vents, and skylights, trim branches that overhang the roof, and get a roof inspection if it has been a while. The whole point is to fix small weak spots in dry weather, when it is cheap and easy, rather than discover them mid-storm.

Why the dry window matters

Los Angeles gets most of its rain in a short winter stretch, so a roof can sit untested for months and then face everything at once. A small weakness that never mattered in the dry season becomes a leak the first time a real storm rolls through. The smart move is to use the dry weeks before winter to find and close those weak spots, because a repair is easier, cheaper, and safer to do on a dry roof than on a wet one during a downpour.

Clearing gutters and valleys is the single most valuable step, since backed-up water is behind a huge share of leaks. Beyond that, resetting slipped tiles and checking flashing at the penetrations closes the spots most likely to let water in. This is the core of good roof maintenance, and a pre-season roof inspection catches what you cannot see from the ground.

Pre-rain checklist

TaskWhy it helps
Clear gutters and valleysLets water leave, not back up
Reset slipped or cracked tilesCloses open spots
Check flashing at penetrationsSeals the most common leak points
Trim overhanging branchesFewer debris and impact leaks
Get an inspectionFinds what you cannot see

What to handle now

If you already know about a weak spot, say a stain that showed last winter or a tile you can see is out of place, handle it now rather than hoping it holds, since a known problem only gets worse once water finds it, as our page on delaying a repair covers. If your roof is older or you are not sure of its condition, a roof repair to the known spots plus an inspection is the best insurance against a mid-storm scramble. Our pages on flashing repair and storm damage signs cover the specifics.

Beat the rains

Get your roof ready before winter

Fix small spots while it is dry. Call (310) 806-5959 or request an inspection below.

Related questions

More about getting ready

Before the winter rains set in, ideally in the dry fall weeks. That gives time to fix anything found while the roof is still dry and easy to work on.
Yes. Backed-up water from clogged gutters and valleys is behind a large share of leaks. Clearing them is the highest-value single step before the rains.
A roof can look fine from the ground and still have a slipped tile or worn flashing you cannot see. A simple inspection is affordable insurance against a mid-storm leak.
No. A stain that dried only means the rain stopped, not that the leak is gone. Get that spot found and fixed before the next rainy season.
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