What Does St. George Summer Heat Do to a Garage Door?
Summer heat rarely breaks a garage door outright. What it does is dry out seals and lubricants, bake the opener in the hottest part of the house and make dark, uninsulated doors very hot to the touch. A few small habits keep the door running.
Request a technicianHow hot does it get?
St. George has long, hot summers. On average about 60 afternoons a year top 100°F, mostly between late June and mid-August, and around 122 days reach 90°F. A closed garage with a dark, single-layer door facing west can get much hotter than the air outside.
What happens to the seals?
Rubber and vinyl seals harden, crack and shrink in strong sun. Once they gap, dust, insects and hot air get in. Check the bottom seal each spring and replace it when it no longer flexes. See seals and insulation.
What about the opener?
An opener on the ceiling sits in the hottest air in the garage. Heat is hard on electronics and plastic gears. Ventilation and an insulated door both help, and a technician can check the opener's force settings during a tune-up.
Why does the door look warped?
Dark steel and wood doors expand in direct sun. Panels that bow or rub the frame on hot afternoons may need hinge or track adjustment, or a lighter, insulated replacement.
What can I do this week?
Wipe the tracks, lubricate hinges and rollers with a garage door spray, test the auto-reverse and look for daylight under the door. If anything sounds wrong, book a tune-up before the hottest weeks.
Is the garage safe to use as a workspace in July?
Treat a closed garage on a July afternoon like a parked car. Open the door for airflow while you work, take breaks inside, and never run an engine, generator or grill with the door shut. If you want a garage you can use year-round, an insulated door, a ventilation fan and a sealed attic hatch together make the biggest difference. A cooler garage is also kinder to batteries, paint and anything stored in a second fridge or freezer.
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