Post-Monsoon Home Inspection: What to Check Before Storm Season Ends
Storm damage in the Valley rarely announces itself. It shows up months later as a ceiling stain or a stucco crack that got worse. Here is the walk-around I do, in the order that matters.
We get a handful of real storms a year here, and people assume that means water is not much of a threat. The opposite is true. Because it happens so rarely, nobody is set up for it, and when three quarters of an inch falls in twenty minutes onto ground that does not absorb anything, water goes places it was never supposed to go.
Late August is the right time to walk the property. Storm season is winding down, the damage is recent enough to trace, and you still have comfortable weather to get repairs done. Here is the order I check things, starting with what causes the most expensive problems.
1. Ceilings and Upper Walls, From Inside
Start indoors, because this is where a roof problem shows up first and cheapest to catch. Walk every room and look at the ceiling, especially near exterior walls, around skylights, and in closets. You are looking for new discoloration, faint rings, bubbling paint, or a soft spot in the drywall. Check the ceiling of the garage too, which people skip.
A stain that was not there in June is a leak, even if it feels dry today. Desert air dries the surface fast while the material behind it stays wet. Mark the date on the wall in pencil so you can tell later whether it is growing.
2. The Roof, From the Ground
Get binoculars and walk the perimeter of the house. Look for tiles that are cracked, slipped, or missing, flashing that has lifted around vents and chimneys, and debris collected in roof valleys. On flat and low-slope roofs, look for ponding stains or seams that have opened.
I want to be direct about this one: do not go up there. Valley roofs run extremely hot, they are covered in fine grit that acts like ball bearings, and tile roofs break under foot traffic in ways that create the leak you were trying to find. Roof work is a licensed roofer's job and I will tell you that every time rather than pretend otherwise.
3. Drainage and Grading Around the Foundation
This is the one that quietly does the most damage. Walk the base of the house and look for soil that slopes toward the foundation, mulch or rock piled above the stucco weep screed, downspouts that discharge right next to the slab, and any spot where you can see a dried mud line showing where water stood.
Fixes here are usually simple: extend a downspout, regrade a low spot, pull rock back away from the wall. Doing it now costs a fraction of what foundation or stucco repair costs later.
4. Stucco and Exterior Walls
Look for new cracks, especially diagonal ones running from the corners of windows and doors, and any spot where stucco sounds hollow when you tap it. Hairline cracking is normal here. Anything wider than about an eighth of an inch, or anything you can see behind, should get sealed before winter so water is not getting into the wall assembly.
5. Windows, Doors, and Seals
Check the caulk around window frames and door casings on the exterior. Storm-driven wind pushes water sideways into gaps that never see water otherwise. Also open and close every exterior door: if one suddenly sticks or the latch no longer lines up, that can indicate movement worth watching.
6. Gates, Fences, and Outdoor Structures
Monsoon wind is the real story here more than the rain. Check gate posts for wobble, fence panels for loosened fasteners, and patio covers and pergolas for lifted hardware. These are easy fixes now and expensive ones after the next gust finishes the job.
7. Exterior Outlets, Fixtures, and the AC Unit
Look at exterior outlet covers for cracks or missing gaskets, and check that GFCI outlets still trip and reset properly. Around the condenser, clear debris and check that the unit still sits level on its pad, since washed-out soil can tilt a pad over time. Anything that got submerged or shows corrosion needs an electrician before you rely on it.
What I Handle and What I Do Not
The repairs on this list I take care of routinely: sealing and caulking, stucco crack repair, drainage extensions, gate and fence hardware, exterior outlet covers, door adjustments, and interior drywall and ceiling repair once a leak is actually fixed. That last part matters, because patching a stain before the source is repaired just hides it until it comes back bigger.
What I do not do: roof work, structural repairs, and electrical service work beyond fixtures and devices. If your walk-around turns up a roof leak, I will help you identify it and then tell you to call a roofer. Our emergency repair guide covers what to do in the moment, and the monsoon prep guide covers getting ahead of it next year.
The Short Version
- Check inside first. Ceiling stains are the cheapest early warning you get.
- Inspect the roof from the ground. Binoculars, not a ladder.
- Fix drainage now. It is the cheapest repair on the list and prevents the most expensive one.
- Seal what is open before winter weather arrives.
- Do not patch a stain until the leak above it is repaired.
Frequently Asked Questions
When does monsoon season end in Las Vegas?
The North American monsoon typically affects southern Nevada from roughly early July through September, with the most active stretch usually in July and August. Late August into September is the right time to walk your property and catch damage while the weather is still dry enough to make repairs comfortably and well before winter.
How do I know if I have roof damage after a storm?
From the ground with binoculars, look for lifted or missing tiles, displaced flashing around vents and chimneys, and debris piles in valleys. Inside, look for new stains on ceilings, discoloration where walls meet ceilings, and any musty smell in closets against exterior walls. A stain that appeared after a storm is a leak until proven otherwise, even if it looks dry now.
Are stucco cracks after a storm serious?
Most hairline cracks are cosmetic and normal as stucco cures and moves with temperature swings. The ones that matter are cracks wider than about an eighth of an inch, cracks that run diagonally from window and door corners, and any crack where you can see substrate behind it. Those let water into the wall assembly, and in our climate water damage hides for months before it shows.
What storm damage should I not try to fix myself?
Anything on the roof, anything involving standing water near electrical, and any structural movement. Valley roofs are hot, slick with grit, and often steeper than they look from the driveway. Roof work is genuinely dangerous and belongs with a licensed roofer. The same goes for a panel or outlet that got wet, which needs an electrician before it gets re-energized.
Why does drainage matter so much in the desert?
Because our soil does not absorb sudden volume. Valley storms drop a lot of water in a short window onto hard-packed ground, so water moves sideways instead of down. If your grading slopes toward the house, or a downspout dumps next to the foundation, that water pools against the slab. Repeated cycles of that are how foundations and stucco start having problems in a place that only gets a few inches of rain a year.
Found Something on Your Walk-Around?
Send me a couple of photos and I will tell you straight whether it is a quick fix, something to watch, or a job for a specialist. Family-owned and insured, serving Henderson and the Las Vegas Valley since 2009.
Call (925) 752-2733