Insulating garage door

Old 11-07-19, 04:42 PM
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Insulating garage door

I have flat slab garage door that I want to insulate. I saw many videos online and they suggest using garage door insulation kits. However in all the videos I saw the garage doors has the groove that can hold/support the insulating sheet.

The problem I have is that my garage door is old flat/slab style which does not have groove that runs along the hinges horizontally.

Any suggestions on what I can use to insulate the door and how?
Old 11-08-19, 05:32 AM
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Glue on panels of rigid foam.
Old 11-09-19, 06:59 PM
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I've done this on 3 doors...though all of them had rolled edges at the top and bottom of the panels. How does yours not? Is it wood or metal? Could you maybe show a pic of the interior?

I just cut the thickest foil faced poly panels that would fit, to slightly larger then the opening, used some acylic latex adhesive caulk on the panel, then flexed the foam to fit in. I even spray foamed the areas under the vertical braces that I couldn't put poly in.
Old 11-10-19, 07:26 PM
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Does the door seal air well enough to justify insulating it in the first place? Sometimes the best answer is a new door.

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