Garage Door Insulation: what to expect
Garage door insulation is one of the cheapest energy upgrades available to most California homeowners with attached garages. Uninsulated steel doors radiate heat into the garage all afternoon — and into the adjacent rooms whose walls share with the garage. Adding R-8 to R-18 insulation cuts measured heat transfer by up to 71%, drops attached-garage temperatures by 10–15°F on hot days, and noticeably reduces the AC load on rooms that share walls with the garage.
We do retrofit insulation on existing steel doors using EPS foam panels cut to fit each section, with reflective vinyl facing and a perimeter seal. The retrofit takes 2–3 hours per door, can be done in place without removing panels, and works on most thin-skinned and double-skinned steel doors. Wood doors and full-view doors aren't candidates for retrofit insulation — we'll tell you upfront if your door doesn't suit the upgrade.
Beyond energy, insulation makes the door significantly quieter. The foam dampens panel resonance, which is the main source of bass-y rumble during operation. Homeowners often comment that the noise reduction alone justified the project. For homes with bedrooms above the garage, this is meaningful.
Signs you need garage door insulation
Attached garage gets very hot in summer
Uninsulated doors on the sunny side of a California home easily push attached-garage temperatures to 105–115°F. Insulation drops that 10–15°F.
Room next to garage runs warm
Bedroom or living space that shares a wall with the garage often runs 3–5°F warmer than the rest of the house. Door insulation helps; wall insulation is the bigger fix.
AC bill spikes in summer
Attached garages bleed conditioned air through the door if there's a return-air path. Insulation slows the heat ingress.
Garage workshop or gym in use
Spending hours in the garage on hot days is uncomfortable without insulation. The upgrade pays back fast for active garage users.
Excessive door noise
Uninsulated panels resonate during travel. Insulation foam dampens the resonance for a noticeable noise reduction.
Common causes & what we fix
Builder-grade non-insulated doors
Tract construction commonly uses the cheapest non-insulated steel doors. They meet building code but ignore comfort and energy efficiency.
Sun-side exposure
South and west-facing garages take the brunt of afternoon sun in California. Insulation is highest-leverage on these exposures.
Habitable space above garage
Bonus rooms and bedrooms over the garage transfer heat from below. Door insulation helps; full ceiling insulation is the bigger lever.
Garage as workshop or gym
If you use the garage for work or workouts, comfort improvements have direct quality-of-life payback.
Older home with no garage insulation
Pre-1990s homes often have no insulation in the garage at all. Door insulation is a logical first step.
Our process
- Call or schedule online.Pick a 2-hour window. We confirm in under 5 minutes with the assigned tech's name and photo.
- On-site diagnosis. Free for most repairs; $39 diagnostic on minor service calls (waived if you proceed). You see the issue and the fix before we start.
- Flat-rate quote. Written estimate before any work. No hourly creep, no upsell pressure — techs are salaried, not commissioned.
- Same-visit fix. 96% first-call fix rate. We test the door with you before leaving and clean up everything we touched.
Pricing & financing
Garage Door Insulation starts at from $249. Every quote is flat-rate and presented in writing before work begins — there are no surprise add-ons or hourly creep. Senior (65+) and military discounts of 10% off labor apply to all residential work. Financing through Synchrony is available on projects over $1,500 at 0% APR for the first 12 months, with same-day approval and no prepayment penalty.
Why homeowners in Long Beach, CA choose us for garage door insulation
We've been a trusted choice since 1974 — over 50 years of family-owned garage door service in Long Beach and across California. Our techs are CSLB-licensed (#1098234), background-checked, drug-tested, and complete an internal 12-week training program before rolling on calls alone. Trucks are stocked for the most common failure modes, which is why our first-call fix rate sits at 96% and our average dispatch time is 78 minutes from your call to a tech in your driveway. We've performed over 42,000 jobs since 1974 and hold a 4.9-star rating across 3,287 verified reviews on Google, Yelp, and Angi.
The garage door insulationworkmanship guarantee is 10 years — separate from any manufacturer warranty on the parts themselves. If the install or repair we performed fails because of how we installed it, we return and fix it at no charge for a full decade. Springs rated for 30,000 cycles carry a lifetime warranty for the original homeowner. Parts and accessories carry standard 1–5 year warranties depending on the item; we'll explain exactly what's covered before we start any work, in writing.
Honest sizing and honest scope are the two principles that drive how we quote garage door insulation. We don't up-sell unnecessary work, our techs are salaried (not commissioned), and the diagnostic is structured so you see exactly what we see — including the parts that are still in great shape and don't need attention. If a repair is the right call, we recommend the repair. If replacement is the better long-term economics, we say so. Either way, the quote is flat-rate, written, and good for 30 days so you can compare and decide on your own timeline.
Areas we serve for garage door insulation
We provide garage door insulation throughout Long Beach, CA and the surrounding Los Angeles County area. Serving Belmont Shore, Naples, Bixby Knolls and surrounding neighborhoods. Coastal air around Long Beach accelerates spring and hardware corrosion — we fit galvanized hardware and high-cycle springs to compensate.
We cover ZIP codes 90802, 90803, 90804, 90805, 90806, 90807 and the surrounding area. Reach times vary by traffic and time of day; we'll quote an accurate ETA when you call. Our dispatch line is open 24/7 and routes directly to an on-call technician — there's no voicemail system between you and the person who'll be solving your problem.
Frequently asked about garage door insulation
Top questions homeowners ask us about this service: