Garage Insulation

[BSHWR]

Just bought a new home (1 year old), there is a room on top of the double door garage. Just wondering if we should put extra insulation in the garage before we install garage door opener. Any idea how much it would cost?
Thanks for any advice.

[Techhead]

Just bought a new home (1 year old), there is a room on top of the double door garage. Just wondering if we should put extra insulation in the garage before we install garage door opener. Any idea how much it would cost?
Thanks for any advice.

WELCOME..
That would depend on how big an area you need to insulate. approx $26-$32 a bag. Also, would depend on the thickness of the joists? 6", 8"??

I would insulate using Roxul, slightly higher R value than Pink. Don't forget to use a vapour barrior. ;)

[BSHWR]

Thanks for the reply.
The area is 18'*18'. I am not sure about the thickness of the joists, I guess I would have to cut a hole in the ceiling drywall to find out.
To fill in Roxul, I would need to take down all the ceiling drywall in the garage, right? Would it be a good idea to drill holes in drywall and blow in the loose-fill insulation? I wouldn't be able to install vapour barrior though... Any insights? Thanks again!

WELCOME..
That would depend on how big an area you need to insulate. approx $26-$32 a bag. Also, would depend on the thickness of the joists? 6", 8"??

I would insulate using Roxul, slightly higher R value than Pink. Don't forget to use a vapour barrior. ;)

[Techhead]

Unfortunately, the best way would be to remove the existing drywall, insulate, vapor barrior then re drywall using 5/8ths (code for a ceiling).

If the builder has put bracing between the joists, then it would make it hard to cover all pockets with blown in insul.

18'x18' you might just need 3 to 4 bags. Well worth it if your finding the room above cold.

[BSHWR]

I will go with your suggestion.

[ghostryder]

Unfortunately, the best way would be to remove the existing drywall, insulate, vapor barrior then re drywall using 5/8ths (code for a ceiling)..

Just don't forget that the vapor barrier has to go on the warm side. So your VB will probably have to go up first, then the insulation. Unless you keep your garage heated all the time.

[Whitedart]

Just bought a new home (1 year old), there is a room on top of the double door garage. Just wondering if we should put extra insulation in the garage before we install garage door opener. Any idea how much it would cost?


I know with mine that the 2x8's that spanned the garage ceiling were stuffed full of batt insulation, so there was not room to add any additional batt or blown in insulation. Rigid foam insulation could be installed, but should be covered.

You might find that insulating the side walls of the garage may keep the garage warmer, and the room above warmer. Insulated garage doors with proper weatherstripping would also help.

[Pete_Coach]

There are some very specific rules and safety concerns with your situation. Be careful what you do. Your garage has to be completely airtight and blocked off from the house. It needs to have special fire rated products (higher rated drywall and any combustible products). You do not want any vapors or exhaust fumes to enter your house. Even a car that is not running emits fumes after it is parked.
This is your family's' safety, so don't tackle this job lightly or haphazardly.

[BSHWR]

Thanks you all for the good suggestions!

[jed]

My office is built "in" the garage, that is it took up some space that would have been the garage, but to make sure I have no issues with fumes, I got it spray foamed. Expensive, hell yes, but I have absolutely no qualms about safety now.

Food for thought for those who have rooms over garages, etc.