Ceiling and roof leak water damage in Las Vegas

Ceiling leak water damage in Las Vegas comes from two places, monsoon rain on the roof in July and August and AC condensate lines that run hard through 79 days a year at 100F or above.

Two white buckets and a red pail catching drips on a wet wooden floor in a wood paneled room — FIG. 01Buckets catching drips after a heavy downpour aboard the Queen Mary, Long Beach CA, October 2018. Lovemedead, CC BY-SA 4.0.

Two sources, two seasons

NOAA normals show 79 days a year at 100F or above at the airport, with average July highs of 103.8F. Air conditioners run hard all summer, and a clogged condensate line or a cracked drip pan drips into the ceiling below. EPA's moisture guide says to keep AC drip pans clean and drain lines flowing. The second source is the roof during monsoon storms, which the National Weather Service says typically come in July and August.

A sagging ceiling is a safety problem

Drywall that holds water gets heavy. If the ceiling is bowing, keep people out of the room underneath and put a bucket under the lowest point. We open the low spot in a controlled way to drain it, then check the insulation above. Wet insulation usually comes out, because it holds water against the drywall and the framing.

Dry, test, then patch

Ceiling drywall that dries to target can stay and be refinished. Drywall that stays wet, crumbles or stains through gets replaced. We read the joists too, since a ceiling that looks dry can hide wet framing.

The first hour

Clock	Action	Why
0 min	Get people out of the water	Do not walk or drive through moving water. Ready.gov says six inches of moving water can knock you down and one foot can sweep a car away.
2 min	Stop the source if you safely can	For a pipe, close the main shutoff. LVVWD says it is usually in the front yard near the sewer riser cap, in the garage or at the home's manifold.
5 min	Keep away from wet power	Ready.gov says not to touch electrical equipment that is wet or while you stand in water. Leave the breaker panel alone if the floor around it is wet.
10 min	Call or text (702) 602-9420	Tell us where the water came from, which rooms are wet and whether it came in from outside. That decides the crew and the gear.
15 min	Photograph everything before it moves	Wide shots of each room, close shots of the water line on walls, and the source. Your insurer will ask for these.
30 min	Lift and separate	Move rugs, boxes and furniture off wet floors. Put foil or wood blocks under furniture legs that must stay.
45 min	Treat flood water as dirty	Floodwater can be contaminated, per Ready.gov. Wear gloves and boots. Keep children and pets out.
60 min	Start the 48 hour clock	EPA says to dry water damaged areas and items within 24 to 48 hours to prevent mold growth. Extraction and drying should start inside that window.

Table. The first hour, from Ready.gov, EPA and LVVWD guidance.

Local numbers behind this page

Measure	Value	Source
Days at 100F or above	79	NOAA NCEI 1991 to 2020 annual normals
Average July high	103.8F	NOAA NCEI 1991 to 2020 monthly normals
August rain normal	0.22 in	NOAA NCEI 1991 to 2020 monthly normals
EPA drying window	24 to 48 hr	U.S. EPA

Table. Each value links to its source.

Ceiling and Roof Leaks questions

Is a ceiling leak an emergency?

A bowing or dripping ceiling is. Keep people out from under it and call. A small dry stain can wait for a scheduled visit.

Why is my ceiling leaking with no rain?

In Las Vegas summers the AC condensate line is a common cause. EPA advises keeping drip pans clean and drain lines flowing.

How hot does it get?

NOAA normals show 79 days a year at 100F or above at the airport, and an average July high of 103.8F.

When do roof leaks usually show up?

During monsoon storms, which the National Weather Service says typically come in July and August.

Can a wet ceiling be dried instead of replaced?

Yes, if it dries to target without sagging, crumbling or staining through. Wet insulation above it usually comes out.

Should I poke a hole in a bulging ceiling?

A small hole at the lowest point can drain trapped water into a bucket. Stand clear, protect the floor and keep the power off in that room if a fixture is wet.

Do you fix roofs?

Roof repair is roofing work. We dry and repair the inside damage and can document it for your roofer and insurer.

How do I know if the attic is wet?

Wet insulation is darker and compressed. We read the joists and the drywall from below with meters before opening anything.

Can mold grow above a ceiling?

Yes, if it stays wet. EPA says to dry water damaged areas within 24 to 48 hours to prevent mold growth.

How do I get help?

Call or text (702) 602-9420 and send a photo of the stain or the sag.