From: "nowforsale" 
Newsgroups: alt.home.repair misc.consumers.house
Subject: Re: Garage door insulation
Date: Sun, 01 Oct 2006 13:19:42 GMT

"Walter Cohen"  wrote in message 
news:m5ETg.464$Dp.166@newsfe11.lga...
>I have two wooden garage doors (home is 45 years old and doors seem to be 
>also).  For the most part they work well in the original tracks as far as 
>going up and down with my Craftsman openers.  However they never do (and 
>never did) seem to fit real well when they are closed shut.  I can see 
>light at the top and at certain areas along each side.
> My HVAC guy mentioned that I really should try to have the doors 
> insulated - meaning the endges, so that it makes a reasonable seal during 
> both winter and summer seasons to help out a bit with air infiltration. 
> He said this type of around the door insulation could be gotten from Home 
> Depot.
>
> If the doors don't ever seem to close tightly in the first place will any 
> side molding insulation really do anything?  I'm thinking that if anything 
> it might further interfere with the travel of the doors and ultimately get 
> rubbed or torn off anyway.
>
> Thoghts on this?
> Thanks.
> Walter

you didn't mention the kind of climate you are in, one of the many variables 
at play as to the best answer for you

sealing the doors might trap humidity (especially if you park vehincles in 
the garage and pull in after a rain when the vehicles are wet), leading to 
accelerated deterioration of those materials/ietms negatively effected by 
humidity

if you park vehicles in the garage or store chemicals ther (oil, paints, 
etc.), sealing could trap more chemical (gasoline, oil, paint, etc.) fumes 
than an aerated garage already does

seailng could also trap heat in the garage in summer (some people install 
vents to release heat in hot months)

there's no easy answer but generally garages should not be hermetically 
sealed