Insulated Steel Garage Door
An insulated steel door sandwiches insulation between steel skins, installed from about $1,400. In Florida the case for it is not the heating bill, it is the attached garage: a garage that runs at 110 degrees pushes heat into the rooms next to it and above it all summer. It is also stiffer and considerably quieter than a single layer door. On a detached garage the same money usually does more good elsewhere.
from $1,400 to $3,000
Rating and code
Ratings are stated as what applies, never as a specific approval number. A Miami-Dade NOA or a Florida Product Approval is issued against a tested assembly at a specific size, it goes on your permit, and the licensed contractor who pulls that permit is the one who puts it there. A number printed on a website proves nothing about the door on your opening.
There are two constructions worth knowing apart. A two layer door is steel with insulation bonded to the back. A three layer door is steel, insulation, steel, and the second skin is what makes it markedly stiffer, quieter and more dent resistant as well as better insulated.
The Florida argument for insulation is different from the northern one. Nobody here is keeping heat in. What you are doing is stopping a west facing garage from becoming a 110 degree box that radiates into the bedroom above it from mid afternoon until well after dark.
That is why the honest answer depends on the building rather than the budget. Attached garage with living space beside or above it, insulation earns its money. Detached garage you park in and leave, it does not, and we will say so.
Who this door is right for
- Attached garages with a conditioned room beside or above them
- Garages used as a gym, workshop, office or laundry
- Anyone who wants a markedly quieter door, which insulation delivers as a side effect
- Houses where the garage wall is a shared wall with a bedroom
Reasons to choose something else
- Costs meaningfully more than single layer steel for a benefit you only feel if the garage is attached
- Heavier, so the springs and the opener are working harder over the life of the door
- Insulation does nothing about air leaking round a failed seal, which is cheaper to fix first
- On a detached garage the payback is close to nothing
Starting prices for a standard single door. Your final price depends on the door, the model, the wind rating a replacement needs and what we find. You get a written quote before any work starts.
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Leave your details and we call you back to measure the opening, confirm the rating your address needs, and give you a written price.
Insulated Steel Garage Door
Price shown is installed, for a standard opening. The final number is confirmed after measuring, and the rating is confirmed against your address.
(561) 897-9930Frequently Asked Questions
Will an insulated door lower my electricity bill?
On an attached garage, usually yes, and modestly rather than dramatically. What people actually notice first is comfort: the room over the garage stops being the hot room in the afternoon. If somebody quotes you a specific percentage saving, ask how they calculated it, because it depends on your garage, your orientation, your insulation elsewhere and your habits, and an invented number is easier to produce than a real one.
Is a higher R-value always better?
Not by itself. R-value is measured through the middle of the panel and says nothing about the seals, the frame or how the door was installed, and heat comes through those too. A well sealed mid range insulated door on a properly aligned frame will outperform a very high R-value door with a failed bottom seal, and cost less.
Can an insulated door also be impact rated?
Yes, and that combination is common in Miami-Dade and Broward where the code generally wants impact rating anyway. It costs more than either on its own. The approval number for the rated assembly goes on the permit, and the licensed contractor who pulls the permit is the one who puts it there.
