garage insulation

[dlenardu]

Hi, This is my first post and I really enjoy reading through all of the posts on this site.
I have a garage that I recently built. It is 30x35 with 12.5 ft ceilings. All concrete block walls, It has roof trusses with 2x6 floor joints and 2x4 rafter on 16" centers. The center of the trusses is floored with OSB for attic storage. I have 2x4 strips across the outside of the trusses placed every 2ft to which the metal roof is attached too. I am wanting to insulate it so that I can heat and cool it. I've been debating on whether to put fiberglass batting in and 5/8 sheet rock or to have insulation blown in. Also sometimes in the summer the roof can sweat so I was thinking about having the spray foam done but it far too expensive for a garage. I then was thinking about cutting 2" thick foam and putting it between the rafters. The other problem I have is leaves and stuff blow into the attack at the ridge cap so I need to do something about that as well. I have been reading so many different things I'm not sure what is going to be the most efficient and most economical.

Thanks for all of you help

 

[HoosierBuddy]

I think I'd pull up the OSB, put batting on all of it, put the OSB back in, and then blow in insulation on top of that on any area that you don't have floored.

Seems like you could screen out the leaves. I'm a little confused on that though, as I thought those ridge vents were built to keep leaves and stuff out.

Do you have framing inside your concrete block walls?

Phil

 

[dlenardu]

I think I'd pull up the OSB, put batting on all of it, put the OSB back in, and then blow in insulation on top of that on any area that you don't have floored.

Seems like you could screen out the leaves. I'm a little confused on that though, as I thought those ridge vents were built to keep leaves and stuff out.

Do you have framing inside your concrete block walls?

Phil

If I went the batting route I wouldn't have to pull the osb up because I have not put any drywall up yet. I do not have any framing on the walls and would like to try and avoid that if possible because the electrical is ran in conduit and the boxes are mounted right on the wall. I was wondering if there was a product that you could apply to the walls that would be like a membrane that would seal the wall and have some kinda r-value to it.

As far as the ridge cap goes. It overhangs about 4-6 inches on both sides, but because the metal roofing has the ribbs in it, the cap has a gap all the way across the roof. When the wind blows it'll blow leaves and pine needles and such up the roof under the ridge cap and then into the attic.