2026-03-28 7 min read
If you've lived in Sherman Oaks for more than one summer, you already know the drill: the San Fernando Valley turns into a furnace. Temperatures regularly push into the high 80s and low 90s from June through September, and on hot spells you're easily brushing up against 96°F or above. Most homeowners think about protecting their HVAC system or their car's interior during those stretches. but almost nobody thinks about the garage door until it breaks.
That's a mistake. Your garage door is one of the largest moving mechanical systems in your home, and it takes the full brunt of Southern California's summer heat every single day.
This is the one that catches most people off guard. When temperatures climb, metal tracks, hinges, and springs all expand slightly. That might sound harmless, but even small dimensional changes can throw off the alignment of a door that was perfectly balanced in cooler weather. The result is a door that drags, squeals, or struggles mid-cycle. often right when you're trying to leave for work.
For homes south of Ventura Boulevard with older, original hardware, this problem is especially common. The original tracks on 1950s and 1960s mid-century modern builds. a style that defines much of Sherman Oaks' architectural character. were often sized to tolerances that leave very little room for heat-related expansion.
The springs, rollers, and hinges on your garage door need lubrication to operate smoothly. In high heat, standard lubricants thin out and lose viscosity quickly. Once that happens, metal parts start grinding directly against each other, accelerating wear at a much faster rate than in milder climates. If your door has suddenly become noisier this summer, thinning lubricant is very likely the cause.
The fix is straightforward: switch to a high-quality, heat-resistant lubricant. not WD-40, which actually strips lubrication. and reapply it every three to four months during the warmer half of the year. A silicone-based or white lithium spray works well in our climate.
The rubber seal along the bottom and sides of your garage door plays an important role: it keeps hot air, dust, and pests out. Prolonged exposure to heat causes it to become brittle and crack. Once that seal is compromised, your garage temperature climbs faster, and your home's AC system has to compensate for heat bleeding through the shared wall.
Check your bottom seal every spring. If it's cracked, flattened, or pulling away from the retainer, it needs replacing before summer sets in. It's one of the cheapest fixes you can make and one of the most impactful.
This one surprises a lot of homeowners in Sherman Oaks. The infrared safety sensors at the base of your door use a light beam to detect obstacles. In summer, direct afternoon sun. especially on west-facing garages. can overwhelm that beam, causing the door to refuse to close or reverse unexpectedly. If your door closes fine in the morning but gives you trouble in the afternoon, direct sunlight on the sensors is almost certainly the culprit.
The solution is simple: install a small sun shade or visor over each sensor. You can find these at most hardware stores for just a few dollars. While you're at it, wipe the sensor lenses clean. dust and grime build up quickly in the Valley.
Garage door springs are always under significant tension, and heat adds to that stress. A spring that's already several years into its lifespan can snap during the hottest part of the day when thermal stress compounds normal wear. If your springs are more than five to seven years old, it's worth having them inspected before peak summer heat arrives. You can read more about spring types and warning signs in our garage door spring replacement guide.
Here's what we recommend every Sherman Oaks homeowner do before July rolls around:
- Lubricate all moving parts. rollers, hinges, springs, and the torsion bar. with a heat-resistant lubricant - Inspect the bottom seal and side weatherstripping for cracking or gaps - Test your safety sensors in the afternoon when sun angles are highest - Visually check tracks for any bowing, rust, or debris buildup - Listen for changes. grinding, scraping, or hesitation are all early warning signs - Check panel condition. heat-faded or warped panels aren't just cosmetic issues; they can affect how the door seals and moves
For a deeper look at routine care tasks that apply year-round, our post on how to maintain your garage door for maximum lifespan walks through everything step by step.
Some heat-related issues are easy DIY fixes. But if your door is visibly off-track, if a spring has snapped, or if the opener motor is hesitating or running hot, stop using the door and call for service. A door that's fighting its tracks or running on a failing spring puts serious stress on every other component. and risks injuring someone if it fails completely.
Garage Doors Sherman Oaks handles heat-related service calls throughout the summer and can spot problems early during a routine inspection. If you're not sure whether what you're hearing or seeing is normal, it's always worth getting a second set of eyes on it. Schedule a service visit before the hottest months arrive. it's much easier to fix a problem in spring than diagnose one in August.
This is a classic heat-expansion symptom. Metal tracks and panels expand as temperatures rise through the day, tightening the clearances that the door moves through. It can also be caused by afternoon sunlight interfering with safety sensors. Have a technician check track alignment and sensor placement.
In the Valley's heat, we recommend lubricating all moving parts. rollers, hinges, springs, and the torsion bar. at least every three to four months, particularly heading into summer. Use a silicone or white lithium spray lubricant, not WD-40.
Yes. High temperatures cause motor lubricants inside the opener to break down faster and can stress electronic components like the circuit board and remote receiver. If your opener is more than ten years old and struggling in summer heat, it may be approaching the end of its reliable service life. Check our guide to smart garage door openers if you're considering an upgrade.