2026-03-12 7 min read
If you live in Perris, you already know the summer sun is no joke. With an average of 275 sunny days per year and July highs that regularly hit 97°F, our corner of the Inland Empire puts garage doors through a punishment that homeowners in cooler climates never have to think about. Whether your home is a newer Spanish-style build in a master-planned community off Ramona Expressway or one of the older ranch-styles near downtown Perris, every garage door in this valley is fighting the same battle against heat and UV radiation. season after season.
Understanding what's actually happening to your door is the first step toward protecting it. Here's an honest breakdown.
Heat doesn't just make your garage uncomfortable. it physically stresses the hardware, materials, and electronics that keep your door working.
Most materials used in garage doors expand when exposed to high temperatures. This process. called thermal expansion. can push panels out of alignment, causing the door to drag, bind, or refuse to close smoothly. For homeowners with wood doors, the news is worse: prolonged exposure to the sun can cause significant warping and surface cracking as UV rays break down the wood's natural fibers and any paint or stain applied on top.
Steel and aluminum doors aren't immune either. UV rays break down paint's chemical bonds, causing fading and chalking on the surface. Once the protective coating degrades enough, bare metal becomes exposed. and even in low-humidity Perris, that creates conditions for rust spots over time, especially around scratches or dents. If your door is looking dull or chalky, that's sun damage in progress, not just cosmetic aging.
Here's one that catches a lot of Perris homeowners off guard: direct sunlight hitting your garage door safety sensors can overpower the infrared beam between them. The door opens fine, but when you try to close it, it reverses or refuses to budge. as if something is blocking the path. Nothing is. The sun is just washing out the sensor signal.
This issue gets particularly bad during late afternoon when the sun is low and shining directly into west- or south-facing garages, which is a very common orientation in Perris's newer suburban grid. A simple sun shield for the sensor or repositioning the receiving sensor to the shaded side of the door frame usually solves it.
Your garage door's springs, hinges, rollers, and tracks all rely on lubrication to move smoothly. Hot weather causes lubricants to become thinner and less viscous, which reduces their effectiveness exactly when the door is working hardest. Meanwhile, heat causes metal parts to expand, which can tighten up tolerances in tracks and brackets, adding friction and strain to the opener motor. Over a Perris summer, this combination quietly accelerates wear on components that would otherwise last years longer.
The motor unit hanging from your garage ceiling can take a real beating when interior garage temps climb well above the outdoor air temperature. which they often do in uninsulated garages here. Heat stress can cause the opener's circuit board to malfunction or shut down unexpectedly. If your opener has been hesitating, running slowly, or cutting out on the hottest days, that's worth investigating before it fails completely. You can learn more about modern opener options that handle heat better in our guide to smart garage door openers.
The good news is that most heat-related damage is preventable with a few deliberate habits.
Standard spray lubricants break down faster in high heat. Pick up a silicone-based or lithium-based lubricant rated for high-temperature use and apply it to the rollers, hinges, springs, and tracks. Do this at least twice a year. once before summer and once after. This single habit extends the life of your hardware significantly.
The rubber seals around your garage door take a direct hit from Perris's UV radiation. Prolonged heat exposure makes weather stripping brittle and prone to cracking or detaching. Once it's compromised, hot air, dust, and pests get inside more easily. Walk around your door and flex the rubber. if it cracks or crumbles, it needs replacing. This is a cheap fix you can do yourself or bundle into a service visit.
Insulated garage doors maintain a more stable interior temperature by creating a thermal barrier between the hot steel skin and your garage interior. For the many Perris homes with attached garages, this also means less heat bleeding into your living space. Insulated doors also tend to be quieter, which matters when you're pulling in late. Check out our full services page to see what insulated door options are available.
Installing an awning above your garage door or strategically placing taller shrubs can meaningfully reduce the direct sun load on the door surface. Shade reduces UV exposure, lowers surface temperatures, and helps your paint and finish last longer. Even light-colored paint. which reflects more heat than dark tones. can make a measurable difference on a south-facing door in Perris.
The best time to catch heat-related wear is before summer starts. not when the door fails on a 100-degree Tuesday morning. A professional inspection can identify sensors that are starting to drift, lubricant that has broken down, and hardware showing early signs of fatigue. Reach out to schedule a tune-up before the peak heat season hits.
For a broader look at year-round door care, our garage door maintenance tips guide covers a complete checklist you can work through yourself.
Q: Why does my garage door close fine in the morning but not in the afternoon?
A: This is almost always a sun interference issue with your safety sensors. In the afternoon, the sun is at a lower angle and often shines directly into the sensor beam on west- or south-facing garages in Perris. Try shading the sensors with a small cardboard tube taped around them, or call a technician to reposition the receiving sensor to a shadier side.
Q: My steel garage door is fading and looks chalky. Is this just cosmetic, or a real problem?
A: It starts cosmetic but becomes structural if ignored. UV rays degrade the protective coating on steel doors over time. Once the coating breaks down enough, the bare metal is exposed to moisture. even the low humidity in the Perris area is enough to cause rust spots around dents or scratches. Repainting with a UV-resistant enamel and cleaning the surface annually keeps this from escalating.
Q: How often should I lubricate my garage door hardware in a hot climate like Perris?
A: Twice a year is the standard recommendation. once before summer and once in the fall. In Perris, where summer heat is prolonged and intense, it's worth doing an additional check in mid-summer if the door has been running daily. Focus on the springs, rollers, hinges, and the torsion bar.