2026-03-12 7 min read
If you've lived in Claremont for more than a summer or two, you already know the sun here means business. Nestled at the foot of the San Gabriel Mountains, Claremont sits in a warm Mediterranean climate where summers routinely push past 90°F and the sky stays clear and dry for months at a time. That's great for weekend hikes up to the foothills. but it's genuinely hard on the mechanical and material components of your garage door.
Unlike wetter climates where rust and moisture rot are the primary enemies, Claremont homeowners deal with a different set of problems: UV degradation, heat expansion, dried-out lubrication, and brittle seals. Understanding these issues is the first step toward preventing them.
Claremont averages over 3,400 hours of sunshine per year, with July alone delivering more than 12 hours of direct sunlight daily. That relentless UV exposure affects almost every part of your garage door system.
Weatherstripping and rubber seals are the first casualties. The intense heat and UV rays cause rubber components to dry out and lose flexibility, eventually cracking and crumbling. Once those bottom seals fail, you're not just letting in hot air. you're inviting dust, insects, and moisture from those December and February rains that do arrive. Replacing worn seals early helps prevent larger mechanical and insulation issues down the line.
Panel finishes take a beating too. UV rays cause paint to fade, bubble, or peel, and vinyl panels can discolor significantly over time. In Old Claremont and The Village. where many homes date back to the 1910s through 1950s with architecturally significant facades. a bleached or peeling garage door looks especially out of place next to a well-kept Craftsman bungalow or Spanish Colonial Revival home. If you're maintaining the curb appeal of a historic property, staying on top of your door's finish matters more than you might think.
Metal parts expand when temperatures climb. In Claremont, where summer highs regularly exceed 90°F, this means your tracks, springs, and hardware are under additional thermal stress every single day from June through September. High heat causes metal components to expand, which can lead to misalignment or increased friction. and that friction accelerates wear on rollers, hinges, and the opener motor itself.
If your door suddenly starts moving slower in July or August than it did in March, heat expansion is a likely culprit. Don't just write it off as normal. Check the tracks for alignment and listen for grinding or scraping sounds that weren't there before. Our full range of garage door services includes seasonal track adjustments that can catch these issues before they become expensive.
Claremont has a rich architectural heritage. from the Craftsman bungalows near the Claremont Colleges to the California Ranch homes in the Condit neighborhood and the Mediterranean-style estates in Claraboya. Many of these homes feature original or custom wooden garage doors. In dry, hot conditions, wooden door panels can dry out, shrink, and splinter, making the door harder to operate and straining the rollers, tracks, and opener motor. If you have a wood door, apply a UV-resistant sealant or exterior-grade finish every couple of years. It's far cheaper than replacing warped panels.
In a climate as dry as Claremont's. with annual rainfall under 8 inches. lubricants on moving parts evaporate and dry out faster than they would in a more humid region. Dry springs, hinges, and rollers create friction, which creates noise and wear. High temperatures can dry out lubrication and increase wear on electrical parts like the opener motor.
A practical rule for Claremont homeowners: lubricate all moving parts. springs, hinges, rollers, and the opener chain or screw. every three to four months rather than the standard twice-a-year schedule used in cooler climates. Use a silicone-based or lithium-based lubricant, not WD-40, which evaporates quickly and can attract grime in dusty conditions.
Speaking of dust. the foothills location that gives North Claremont and Claraboya their stunning views also channels wind and fine particulate debris down toward residential neighborhoods. Dust settles into tracks and rollers, compounding friction issues. A quick wipe-down of your tracks every couple of months goes a long way.
Direct sunlight, particularly in summer, can interfere with the infrared safety sensors used in garage door systems. Excessive heat can also cause sensors to overheat or malfunction. If your door reverses for no apparent reason on a hot afternoon, or refuses to close when the sun is low and hitting the sensor lens directly, this is likely the issue. not a ghost in the machine.
A simple fix is cleaning the sensor lenses regularly and, if needed, installing a small shade or cover over the sensors to block direct sunlight. If the problem persists, the sensors or their wiring may have been degraded by prolonged UV exposure and need replacement. Check our FAQ page for more on diagnosing common sensor issues.
Here's a practical schedule tailored to our local climate:
- Late February / Early March. Before the heat builds, inspect all weatherstripping and seals. Replace anything cracked or brittle after winter rains. Test the door balance by disconnecting the opener and lifting manually. - May. Lubricate all moving parts before summer kicks in. Check for paint bubbling or fading on panels. Inspect sensor alignment. - August or September. Mid-summer check for track alignment issues caused by heat expansion. Listen for new noises. Wipe down tracks to remove dust buildup. - November. Pre-rain inspection. Make sure bottom seals are intact so December rain doesn't pool under the door.
For a deeper look at getting ready for the hottest months, our post on preparing your garage door for summer covers the full heat-season prep process in detail.
If you're unsure where to start or want a professional set of eyes on your system, schedule an inspection with us. a quick check now is a lot less painful than an emergency repair call in August.
Because of the dry heat and low humidity, plan to lubricate your springs, hinges, rollers, and opener hardware every three to four months. Standard advice of twice a year is designed for more temperate climates. Use a silicone-based lubricant and avoid WD-40, which evaporates quickly in the heat.
Not exactly normal, though it is common in hot climates. Metal tracks and hardware expand in high heat, which can cause misalignment and increased friction. If the problem is mild, lubrication and a track alignment check can fix it. If it's significant, have a technician assess the system before the strain causes damage to your opener motor or springs.
Yes. UV degradation affects more than just paint and finish. It breaks down rubber seals and can make plastic components. including sensor housings and wiring insulation. brittle and prone to failure. A door with compromised seals also lets in heat that raises your garage temperature, increasing strain on every component inside.