R-value, honestly
Insulated doors are the most oversold item in this trade and also, in this specific climate, the one upgrade that most often pays for itself. Both of those are true. Here's how to tell which situation you're in.
What the number means
R-value measures resistance to heat flow. On a garage door it's usually quoted for the section itself, not for the installed door — which means the perimeter seal, the bottom seal and the fit of the opening matter at least as much as the sticker does. A well-sealed R-9 door outperforms a badly hung R-16 one, every time.
Two core types dominate. Polystyrene is a rigid foam board dropped into the section: cheaper, typically R-6 to R-9, and it leaves air gaps at the edges. Polyurethane is foamed in place and bonds to both steel skins: R-12 to R-18, dramatically stiffer, and noticeably quieter because the section can't drum.
| Your garage | What we'd spec | Why |
|---|---|---|
| Detached, unheated, storage only | Non-insulated steel | There's nothing to keep warm. Spend the difference on nylon rollers instead. |
| Attached, unheated, room above | Polyurethane R-12+ | The garage buffers the room above it. This is the most common Capital Region case and the clearest win. |
| Attached and heated / shop | Polyurethane R-16 to R-18 | You are paying to heat this space. The door is the largest single opening in it. |
| Detached but heated shop | Polyurethane R-16+, plus seal work | Seal the perimeter and the slab edge or the R-value is decorative. |
Before you ask
- If your garage ceiling and shared wall aren't insulated, the door is not your first problem. We'll say so, and we don't sell insulation for the wall.
- Insulated doors are heavier. That means correct spring sizing — a heavier door on the old springs is a failure with a date on it.
- The quiet is real and it's the thing people actually notice. Polyurethane sections don't drum the way hollow steel does.
- We won't quote you an energy saving in dollars. Too many variables, and any number we gave you would be marketing rather than arithmetic.
Why this page exists
Because no other garage door site serving this region talks about cold at all, and we spend four months a year working in it.
Ask about your garage specifically
Tell us attached or detached, heated or not, and whether there's a room above it. That's enough for a real recommendation over the phone.
- Hours
- Mon–Sat 7:00 AM – 7:00 PM
- Base
- Rotterdam, NY
- Diagnosis
- $85, waived with repair