Garage Door Insulation in New Hampshire | 911 Garage Door NH
from $249
Garage Door Insulation in New Hampshire
R-8 to R-18 insulation retrofit for existing steel doors. Reduces transferred heat by up to 71%, lowers AC load on attached garages, and noticeably quietens door travel.
More garage door installation services in New Hampshire
Garage Door Insulation is one part of our garage door installation coverage in New Hampshire. For the full picture — symptoms, costs, and when to repair vs. replace — start with the complete Garage Door Installation guide, or browse every garage door installation service we offer.
Garage door insulation is one of the cheapest energy upgrades available to most 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 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.
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 locally. 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
1
Call or schedule online. Book your garage door insulation in New Hampshire online or by phone and pick a 2-hour window. We confirm in under five minutes with the assigned tech's name and photo.
2
On-site diagnosis. On arrival we diagnose the garage door insulation on-site — free for most repairs, $39 on minor service calls (waived if you proceed). You see the issue and the fix before we start.
3
Flat-rate quote. You get a flat-rate garage door insulation quote in writing, good for 30 days — no hourly creep and no add-ons after the fact.
4
Same-visit fix. Most garage door insulation work finishes the same visit: our trucks carry the common springs, cables, rollers, and opener boards, so a second trip is rare.
How much does garage door insulation cost in New Hampshire?
Garage Door Insulation the United States starts at from $249, every garage door insulation quote is flat-rate and presented in writing before work begins — no surprise add-ons, no hourly creep. Seniors (65+) and military save 10% on labor, and financing covers projects over $1,500 at 0% APR for 12 months, with no prepayment penalty.
Why homeowners in New Hampshire choose us for garage door insulation
We've been a trusted choice since 1974 — over 50 years of family-owned garage door service across New Hampshire. Our techs are CSLB-licensed (#1098234), background-checked, and complete an internal 12-week training program before rolling on calls alone.
Our garage door insulation carries a 10-year workmanship guarantee — separate from any manufacturer warranty on the parts themselves. If the garage door insulation we performed fails because of how we did it, we come back and fix it free for a full decade. Springs rated for 30,000 cycles carry a lifetime warranty for the original homeowner, and parts and accessories carry standard 1–5 year warranties by item.
We quote garage door insulation on honest scope: no unnecessary up-sell, salaried (never commissioned) technicians, and a transparent diagnostic so you see exactly what we see — including the parts still in good shape. If a repair is the right call we say so; if replacement is the better long-term economics, we say that. The flat-rate garage door insulation quote is written and good for 30 days.
Areas we serve for garage door insulation
We provide garage door insulation throughout New Hampshire, with fast coverage in every major New Hampshire metro.
Reach times for garage door insulation vary by traffic and time of day, so we quote an accurate ETA when you call — and the dispatch line routes straight to an on-call technician, no voicemail in between.
Frequently asked about garage door insulation
Top questions homeowners searching for Garage Door Insulation near me ask us:
How much will my bill drop?
Highly dependent on home, climate, and exposure. Typical homes with attached garages see a noticeable drop in summer cooling costs. Payback is usually 12–24 months.
Will the door still operate normally?
Yes — insulation foam adds only a few pounds per panel, and we re-tune the spring tension and opener force to match the new weight as part of the install.
How long does installation take?
2–3 hours per single door, slightly longer for double doors. We can do everything in one visit without removing the door.
What R-value should I get?
R-8 is the entry level and provides meaningful improvement. R-12 is the sweet spot for most homes. R-18 is overkill for the local climate but a fine choice for sound-dampening priority.
Does it work on every door?
Most thin-skinned steel doors — yes. Double-skinned steel — varies, sometimes already insulated. Wood and full-view doors — no, retrofit isn't possible. We assess during the quote.