Roof leaking after a monsoon storm? What to do tonight in Phoenix

The first 15 minutes: safety, then water

Monsoon storms tend to hit in the late afternoon or evening, which means many leaks are discovered after dark. Before anything else, think about electricity. If water is coming through near a light fixture, ceiling fan or outlet, turn that circuit off at the breaker panel. Don't stand in water to do it. If you are not sure which breaker controls the room, turn off the main and use flashlights.

Then go after the water. Move electronics, rugs, furniture and anything you care about out of the drip zone. Put down a bucket, a trash can or a storage tote, with a towel inside to stop splashing. Lay old towels around it. These steps sound basic, and they matter more than anything else you will do tonight.

• Turn off power to any wet fixture or outlet at the breaker
• Move valuables, rugs and electronics out of the way
• Catch drips in a container with a towel inside
• Keep kids and pets out of the room

If the ceiling is sagging or bubbling

A ceiling that bulges downward is holding water above it. Left alone, it can give way all at once and drop wet drywall and insulation into the room. The safer move is to control where the water comes out. Put a bucket under the lowest point of the bulge, stand to the side, and poke a small hole with a screwdriver. The water drains into the bucket instead of spreading across the attic and pulling the whole ceiling down.

Have a second bucket ready, since the first one can fill fast. Once the flow slows, you will have a better idea of how much water came in. If the bulge is large or the drywall is already cracking around it, keep everyone out of the room and wait for help rather than trying to manage it yourself.

Why you should stay off the roof tonight

We get it: you want to find the hole and cover it. But a wet tile roof in the dark is one of the most dangerous places you can stand. Concrete and clay tiles are slick when wet, loose tiles shift underfoot, and lightning often lingers after the heavy rain passes. Flat roofs have their own hazards, including skylights you can't see well and soft spots on a waterlogged deck.

Tarping a roof properly takes ladders, the right fasteners and someone who knows how to secure a tarp without breaking more tile. That is exactly what emergency roof crews are for. We answer (602) 878-3594 around the clock, and when it is safe to work, we send a crew to dry the area in. Until then, stay inside and keep the water contained.

Start documenting while it is happening

Photos and video taken during the leak are more useful than anything you can reconstruct later. Capture the drip, the stain, the bulge, any wet furniture and the outside of the house if you can do it safely from the ground. Note the time. If you know the storm brought strong wind or hail, write that down too, along with anything you saw blow off the roof.

This record helps the roofer figure out where water entered, and it helps if you decide to talk to your insurer. Our walkthrough of the roof claim process explains how that documentation gets used, but the short version is simple: more photos, with time stamps, are always better.

Tomorrow morning: what to look at from the ground

In daylight, walk around the house and look up. You are looking for clues, not making repairs. Note anything that is clearly out of place and take photos before you clean anything up. The yard often tells the story: shingle pieces, broken tile shards or a chunk of foam on the ground point straight at the damaged area.

Inside, check the attic if you can get there safely by its access hatch. Look for wet insulation, dripping from the underside of the deck and staining around vents and pipes. Wet insulation should come out and dry, since it holds moisture against drywall and wood for days, and that is how mold gets started in a closed space.

• Missing, cracked or slipped tiles, especially at ridges and edges
• Lifted or missing shingles and loose flashing
• Clogged scuppers, canales or gutters on flat roofs
• Debris, branches or palm fronds sitting on the roof
• Water stains on stucco below scuppers or parapets

Why monsoon leaks happen where they do

Most monsoon leaks are not random. On tile roofs, the underlayment beneath aging tile is usually the real failure, often around 20 to 25 years in Valley heat, and a heavy, wind-driven storm finds every brittle spot at once. On flat roofs, water backs up behind clogged scuppers and canales after a dust storm fills them with grit, then finds a crack at the parapet. Flashings at walls, chimneys and skylights are also frequent culprits.

Knowing the likely cause shapes the fix. A slipped tile is a quick repair. Failed underlayment over a whole slope is a bigger job, and patching one spot at a time just moves the leak. Our leak repair work starts by tracing water to its true entry point, which is often a few feet uphill from where it showed up on the ceiling.

After the storm passes: making it permanent

A tarp or temporary dry-in buys time. It is not a repair. Within a few days, the damaged area should be inspected properly, the cause identified and a real repair scheduled. Monsoon season runs June 15 to September 30, so if the roof leaked once, the next storm will test the same weak point. For homeowners who want to get ahead of next summer, our pre-monsoon roof checklist is a good place to start.

Expect a typical post-storm leak repair to run somewhere around $485 to $1,690, depending on roof type, how far the water traveled, whether tile or decking needs replacing and how hard the area is to reach. Larger underlayment or deck repairs cost more. Whatever the scope, you will get the range and the reasons before work starts.

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