Washington Heat Advisory: How Today's Extreme Heat Can Damage Your Roof (And What Homeowners Should Do)
If you’ve stepped outside today, you’ve probably noticed it already—it’s hot.
The National Weather Service has issued a Heat Advisory for much of Eastern Washington, including Spokane, Spokane Valley, Cheney, Airway Heights, and surrounding areas. Afternoon temperatures are expected to reach 94°F to 101°F, creating dangerous conditions not only for people—but for your roof as well. National Weather Service
While many homeowners worry about storms, hail, or heavy snow, extreme summer heat is one of the most overlooked causes of roof damage.
How Extreme Heat Affects Your Roof
1. Shingles Expand and Contract
As temperatures climb toward 100°F, asphalt shingles absorb even more heat.
This repeated cycle of heating during the day and cooling at night causes shingles to:
- Curl
- Crack
- Lose protective granules
- Age faster than expected
Over time, this shortens the lifespan of your roofing system.
2. Roof Temperatures Can Exceed 150°F
Even when the outside air is around 100°F, dark-colored roofs can reach 150°F–170°F.
These extreme surface temperatures can:
- Dry out roofing materials
- Weaken adhesives
- Cause premature deterioration
- Increase attic temperatures
3. Flashing Can Separate
Metal flashing around chimneys, skylights, and vents expands in high heat.
Over time this movement may create:
- Small gaps
- Loose sealants
- Water entry points
Many roof leaks begin around flashing—not the shingles themselves.
4. Your Attic Gets Hotter
Poor attic ventilation traps heat beneath your roof.
This can lead to:
- Higher cooling bills
- Moisture buildup
- Warped roof decking
- Reduced shingle life
Proper ventilation is just as important in summer as it is during winter.
Warning Signs to Watch For
After today’s heat, inspect your home for:
- Curled shingles
- Missing granules in gutters
- Soft or sagging roof areas
- Cracked sealant around vents
- Unusually hot upstairs rooms
- Rising energy bills
These are often early indicators that your roof is under stress.
Why Spokane Homeowners Shouldn't Ignore Heat Damage
Today’s forecast also includes the possibility of isolated thunderstorms in some areas after the hottest part of the day. When roofing materials have already expanded in extreme heat, sudden weather changes can place additional stress on your roof system.
Small issues discovered today can become expensive leaks during the next windstorm or heavy rain.
Prevent Costly Repairs with a Free Roof Inspection
A professional inspection can identify:
- Heat-related wear
- Damaged flashing
- Ventilation problems
- Hidden leaks
- Aging shingles before they fail
Catching these issues early is almost always less expensive than emergency repairs later.
Palmer Construction is Here to Help
Turn Siding Energy Upgrades Into a Stronger Summer Plan
At Palmer Construction, we help homeowners throughout Spokane, Spokane Valley, Liberty Lake, Cheney, Airway Heights, Deer Park, Post Falls, Coeur d’Alene, and North Idaho protect their homes from Washington’s changing weather.
Whether your roof is showing signs of heat damage or you simply want peace of mind, our experienced team provides FREE roof inspections with honest recommendations—no pressure.
Call or Text: 509-607-2487
Schedule your FREE Roof Inspection today.
FAQs
Can hot weather damage a roof?
Yes. Prolonged heat causes shingles to expand, lose granules, dry out, and become brittle, reducing the lifespan of your roof.
How hot does a roof get in Washington?
On a 95°F–100°F day, roof surfaces can reach 150°F–170°F, especially with darker shingles.
Should I inspect my roof after a heat wave?
Absolutely. Heat can accelerate wear that isn’t immediately visible from the ground.
Does attic ventilation matter during summer?
Yes. Proper ventilation reduces attic temperatures, protects roofing materials, and improves energy efficiency.
