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Praughfet t1_j6khhfm wrote

Reply to comment by ValidGarry in Does garage door insulation need to be evenly distributed? by Prophetshark

this is more of a case of more info needed then something cut and dry.. the facts are, the best way to keep a room over a garage warmer is to add heat to the garage, which in alot of places , can only be done with electric heat, which is very costly, or by spray foaming or having blown in insulation installed in teh garage ceiling, The reason rooms over garages are cold is because the heat move downwards. So limiting the heat transfer that way, is FAR more cost effective then trying to keep the garage a few degrees warmer., which is all treating the door will do.

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ValidGarry t1_j6kk1i7 wrote

Also, a lot of people like to use the garage as additional space.
I do agree on the best way to improve the room is to insulate between the garage and the room, but that's a much bigger job.
I have my garage door insulated to also reduce heat gain in the summer. The door is South facing so heats up really badly in the summer. Some people just like the garage to be more usable space year round, so insulating the door may well be useful for lots of reasons.

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