Wisconsin winters get the blame for roof damage, but summer is just as hard on a roof. Trapped attic heat and intense UV bake shingles from both sides, shortening their lifespan well before you'd expect.
Key takeaways
- Attic temperatures can exceed 140°F in summer, accelerating shingle wear from below.
- Poor ventilation is one of the most common and most overlooked issues we find.
- Catching ventilation problems early is far cheaper than an early roof replacement.
Why summer is rough on a roof
Asphalt shingles are designed to shed heat, but when an attic can't breathe, heat builds up underneath and cooks the shingles from the inside. Combined with direct UV from above, this dries out the protective granules and makes shingles brittle.
Over a few summers, that hidden wear can take years off a roof's life even if it looks fine from the street.
Signs of an attic ventilation problem
During an inspection we check for balanced intake and exhaust ventilation, signs of moisture or rust on nails, and excessive attic temperatures. Curling or cupping shingles, a hot upstairs, and high cooling bills are all clues something isn't venting right.
What you can do
Keep soffit vents clear of insulation, make sure ridge or attic fans are working, and have the roof and attic looked at before problems compound. Small ventilation fixes are inexpensive compared to a premature tear-off.
Frequently Asked Questions
How hot does an attic get in summer?
Can poor attic ventilation void my roof warranty?
Do you inspect the attic during a home inspection?
Ready to protect your investment?
Schedule your inspection with Milwaukee’s trusted team, or call us with questions.
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