If you’ve lived in the Phoenix Valley for more than one summer, you know what’s coming: haboobs, 60 mph straight-line winds, torrential downpours that drop 2 inches of rain in 20 minutes, and hail. The Arizona monsoon season runs from June 15 through September 30 — and your roof takes the brunt of it. Here’s exactly what All Home Roofing & Exteriors recommends every Phoenix homeowner do before the storms arrive.
Why Monsoon Season Is the #1 Threat to Phoenix Roofs
The desert sun bakes asphalt shingles all summer, making them brittle before a single drop of rain falls. Then monsoon storms hit with sudden, extreme force. The combination of UV-weakened materials + high-wind impact + flash flooding creates the perfect conditions for roof failure — often on roofs that seemed perfectly fine in May.
According to Arizona Department of Insurance data, roofing claims spike over 300% during monsoon season compared to the rest of the year. Most of those claims are for damage that could have been caught with a pre-monsoon inspection.
Pre-Monsoon Roof Checklist (Do This in May or Early June)
1. Inspect Your Shingles From the Ground
Use binoculars if you have them. You’re looking for:
- Curling or cupping edges — shingles bending upward or downward at the corners
- Missing granules — bare, shiny patches on shingles (granules end up in your gutters)
- Cracked or split shingles — especially on south- and west-facing slopes that take the most sun
- Missing shingles — any gaps need to be patched before the first storm
2. Check Your Flashing
Flashing is the thin metal strips around your chimney, vents, skylights, and roof edges. In Phoenix’s extreme heat, flashing sealant dries out and cracks annually. Loose or missing flashing is the #1 cause of interior water damage during monsoon storms — water runs straight in along the gap.
3. Clean and Inspect Your Gutters
Phoenix gutters fill with desert dust, debris, and bird nests year-round. Clogged gutters during a monsoon downpour cause water to back up under your roofline — one of the fastest ways to get interior ceiling damage. Clean them out, then check that they’re properly pitched toward the downspouts and firmly attached to the fascia board.
4. Look at Your Attic Ventilation
In Phoenix, attic temperatures can hit 160°F in summer. Proper ventilation (ridge vents + soffit vents) keeps heat from cooking your roof deck from the inside out. Check that soffit vents aren’t blocked by insulation and ridge vents are intact.
5. Look for Interior Warning Signs
Before you go up or hire someone to inspect, walk through your home and check:
- Water stains or rings on ceilings — especially in closets and corners
- Dark spots or bubbling in drywall near exterior walls
- Musty smell in your attic
- Daylight visible through attic boards (not around vents)
What We Look For During a Professional Pre-Monsoon Inspection
When All Home Roofing & Exteriors performs a pre-monsoon inspection for Phoenix homeowners, we go beyond what’s visible from the ground:
- Walking the entire roof surface to check decking integrity underfoot
- Testing all flashing seals with a visual and touch inspection
- Checking pipe boot seals — the rubber boot around plumbing vents cracks every 5–7 years in Arizona heat
- Measuring granule loss to estimate remaining shingle life
- Inspecting the ridge cap — the apex of your roof takes the most wind impact
- Documenting everything with photos — useful for insurance claims if storm damage occurs later
What To Do After a Monsoon Storm
After a significant storm — especially one with hail or 50+ mph winds — do a quick walkthrough:
- Check gutters for large amounts of granules (sign of shingle damage)
- Look for dents in metal vents, AC units, and gutters (if metal is dented, shingles likely are too)
- Inspect your attic the following day for new daylight, dripping, or moisture
- Take photos of everything before cleanup — your insurance company will need documentation
⚠️ Don’t wait to call. Small storm damage expands rapidly in Phoenix’s heat. A nail pop or cracked shingle that costs $150 to fix in June can become a $3,000 interior water damage job by August if left unaddressed.
Get a Free Pre-Monsoon Roof Inspection in Phoenix
All Home Roofing & Exteriors offers free roof inspections for Phoenix Valley homeowners. We’re a licensed Arizona roofing contractor (ROC# 364411) serving Phoenix, Scottsdale, Glendale, Mesa, Tempe, and Chandler.
📞 Call or text us at (602) 893-9467 to schedule your free pre-monsoon inspection. Don’t wait until the storms are already hitting — appointment slots fill up fast.