2026-03-25 6 min read
Most La Puente homeowners think about garage door problems in winter. a little rain, maybe some wind. But in this part of the San Gabriel Valley, summer is actually the season that does the most cumulative damage to garage doors. With temperatures reaching the high 80s to mid-90s, over 12 hours of direct sunshine on peak summer days, and a dry season that stretches nearly eight months, your garage door takes a real beating before the rains return in December.
If your home is one of the many midcentury ranch-style houses in West Puente Valley or elsewhere in La Puente, your garage door faces south or west in a lot of cases. meaning it catches the full brunt of afternoon sun. Here's what that actually does to your door, and what you can do about it before small problems become expensive ones.
Extended UV exposure causes painted and coated surfaces to fade, peel, and bubble. For steel doors, the finish breaks down faster when it's absorbing heat all summer. For the older wooden doors still found on some of La Puente's original ranch homes, warping is a real risk. the wood expands unevenly under heat and can cause the door to sit crooked in its frame, making it harder to seal and harder to operate.
If the finish on your door is already peeling or showing discoloration, applying a UV-resistant coating can reduce surface temperature and slow the breakdown. Catching this early is a lot cheaper than panel replacement.
The rubber bottom seal and the side weatherstripping on your garage door take a particular hit during La Puente summers. Heat and prolonged UV exposure dry out rubber components, making them brittle and prone to cracking. Once the seal goes, you lose your barrier against dust, insects, and the heat itself. and in an area that goes months without rain, fine dust getting into your garage adds up fast.
A simple check: close your door and look for any daylight visible along the bottom edge or sides. If you can see light, the seals need replacing. You can also run your hand along the bottom seal when it's warm outside. if it feels stiff and cracked rather than pliable, it's time for a new one. Reach out to our team if you're not sure which type of seal fits your door.
Here's a problem specific to sunny climates that catches a lot of homeowners off guard: direct sunlight hitting the safety sensor eyes (the small sensors near the floor on either side of your garage door frame) can obstruct the infrared beam. The result is a door that opens fine but refuses to close. unless you hold the wall button down the entire time. This isn't a broken sensor; it's the sun temporarily blinding the beam.
The fix is straightforward: purchase small sun shields designed to shade the sensor eyes, or simply wipe the sensor lenses with a clean damp cloth regularly. In West Covina and La Puente, where clear summer days are the norm, this is worth doing every spring before peak heat arrives.
High temperatures also affect your garage door opener. Heat causes metal components to expand slightly, adding friction. If your springs are also wearing down (which happens faster in heat. see our guide on spring warning signs), the opener motor has to work harder to compensate. Over a summer, that added strain can shorten the motor's lifespan considerably.
Insulated doors help here. A properly insulated garage door doesn't just keep your garage cooler. it reduces the thermal stress on the entire system, including your opener.
Before the heat peaks in July and August, walk through this quick inspection:
- Check the bottom seal and weatherstripping for cracks, brittleness, or flattening. Replace if needed. - Inspect the panels for UV fading, bubbling paint, or signs of warping. Apply a UV-resistant finish if the coating is degrading. - Lubricate moving parts. rollers, hinges, and the torsion spring shaft. with a garage-door-rated lubricant (not WD-40). Heat dries out lubrication faster than you'd expect. - Shade or shield the safety sensor eyes to prevent sunlight interference on sunny afternoons. - Test the door balance by disconnecting the opener and lifting the door to waist height. It should stay put without drifting. - Listen for new noises. Squeaking or grinding that wasn't there in spring is a sign something needs attention before it fails in the heat.
Garage Door La Puente recommends scheduling a professional tune-up before summer if your door is more than five years old. A technician can catch issues. like a spring that's close to its cycle limit, or a slightly bent track. before they become an emergency on a 95-degree August afternoon. Browse our full range of services to see what's included in a seasonal inspection.
Many openers have sensitivity and force settings that can drift over time. In summer heat, you may find your door reversing mid-close or not fully closing. Before calling for a repair, check your opener's manual for how to adjust the close-force setting. If adjusting it doesn't help, or if the door is reversing even with the settings maxed, that's a sign of a mechanical issue. typically spring tension or track alignment. that needs a professional look.
For more guidance on keeping your garage door in good shape year-round, visit our service areas page to confirm we cover your part of La Puente.
Q: How often should I lubricate my garage door in La Puente's climate? A: At least twice a year. once in spring before summer heat, and once in fall before the rainy season. Use a silicone or lithium-based lubricant made for garage doors. Avoid spraying the tracks themselves; lubricate only the rollers, hinges, and spring shaft.
Q: My garage door won't close on sunny afternoons but works fine in the morning. What's happening? A: This is almost certainly direct sunlight hitting the safety sensor eyes and disrupting the infrared beam. It's not a broken sensor. it's an interference issue. Install sun shields over the sensor eyes or reposition them slightly downward so they're less exposed to direct afternoon sun.
Q: Is an insulated garage door worth it in La Puente? A: For most La Puente homes. especially those with attached garages or living spaces above the garage. yes. An insulated door keeps your garage significantly cooler in summer, reduces noise, and is more resistant to denting and warping. The energy savings on air conditioning in adjacent rooms can offset the cost over time.