How to Stop a Roof Leak in the Rain (Safe Temporary Fixes)

Written by the Valrico Roof Leak Pros editorial team. Updated October 30, 2026. How we research our pages

The first ten minutes

1. Catch and divert the water. Put a bucket or trash can under the drip. Lay towels around it, and a plastic sheet over furniture or electronics you can't move.
2. Move what you can. Rugs, electronics and anything that can warp or stain should come out of the room.
3. Watch the ceiling. A bulging, sagging or dripping ceiling is holding a lot of water. Keep people away from it.
4. Think electricity. If water is near a light, ceiling fan or outlet, don't touch it. If you can safely reach the panel, turn off the circuit. If you can't, stay away and call a professional.
5. Take photos and video of the leak, the ceiling and the weather, with the date. You'll want them for a claim.
6. Call (813) 555-0100 and tell the roofer the leak is active. Ask about a temporary tarp or patch and a realistic time window.

Can you look in the attic?

If you have safe access, a look in the attic can help a roofer later. Water often shows as a dark streak on the underside of the roof deck or along a rafter, or as damp insulation. Use a flashlight, step only on joists or boards, and don't go up if the ceiling below is sagging. Take a photo and note where the wet spot is in relation to vents or chimneys.

What roofers do from the outside

You don't need to do this yourself. Knowing how it works helps you judge whether a temporary fix is any good. Water always runs downhill, so every layer of a patch or tarp has to overlap downhill. The upper edge goes under or above the opening, so water runs over each edge, not beneath it. A tarp that's lapped the wrong way can funnel water into the roof instead of off it.

• A tarp covers a larger damaged area. It's fastened at the top above the opening, lapped so water sheds over it, and secured so wind doesn't lift it.
• A sealed patch closes a small opening with roofing sealant or a self-adhering membrane that sticks under the surrounding shingles.
• A temporary dry-in covers the roof deck after a section of roofing blows off, until a permanent repair can be done.

Temporary fixes people try: what works and what doesn't

Why not Flex Seal?

The maker says Flex Seal can seal minor roof leaks for temporary or quick fixes, and that it works best on clean, dry surfaces. That's the key: roofing contractors point out that in strong Florida sun it can dry out, crack and peel, and that it can trap moisture under the patch, hide the real problem and damage shingles. It may also complicate warranty claims. If you use it at all, treat it as a short-term measure and tell the roofer what you used.

Protect your insurance claim while you wait

• Photograph the leak and damage, inside and out, with dates
• Report the loss to your insurer promptly
• Keep damaged materials and debris. Fallen limbs and torn shingles can be evidence
• Keep receipts for any emergency work, such as a tarp
• Don't sign anything that assigns your claim to a contractor. You never have to sign an Assignment of Benefits

Whether your policy pays depends on the cause, as our guide explains: does homeowners insurance cover a roof leak in Florida.

After the rain stops

• Don't relax. A tarp or patch is temporary, and the next storm may be hours away
• Dry out wet insulation and drywall quickly, because damp materials can grow mold
• Schedule an inspection, ideally in dry weather, so the roofer can trace the source
• Ask the roofer whether the fix is a repair or a sign the roof is nearing the end of its life