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A practical question in a cold state. Ask for the rating of the door on your estimate.
An insulated door has a core, usually in a steel sandwich, that slows heat loss compared with a thin uninsulated sheet. People ask about it when the garage sits under a bedroom, when the garage is used as a workshop, or simply because winters are cold. We can talk about it on an installation or replacement estimate.
Ask the technician what the door being proposed is rated for, and get that rating in the estimate. Foam type and heat savings depend on the door that is ordered.
Insulation does not replace weatherstripping. A thick door with a failed bottom seal still leaks wind at the floor. Weatherstripping is that job. Insulation also adds a little weight, which the springs have to match. That is why the door is balanced after installation.
Coastal salt and inland cold are both reasons the door material matters. Steel and insulation can be combined. Carriage-house styling can hide an insulated core or not. The estimate is where that is chosen. No price is listed.
Ask for the rating of the specific door on your estimate. Call (781) 602-0737. We don't post one R-value for every door.
The bottom seal and the perimeter weatherstripping do that job. Insulation is the body of the door.
Call (781) 602-0737 · Request a free estimate