Re: Insulation Help
Are these the ceiling joists you are referring to?
Originally Posted by akcrx
Not likely --- *maybe* R10 at best
The insulation within them is about 3" thick. I was doing some research and I believe it may be R19.
In order to achieve your target R value you will need around 10 inches of blown insulation. If you go the blown in route a recommendation is to pull up the batts then blow in whichever ( personally I prefer cellulose over fiber glass ) and lay the batts over the blown insulation.
I live in Zone 5 and the recommended R value is R49-60. I would like to get my R value up to at least a R30 if possible. I was looking to probably use blow-in insulation (cellulose or fiberglass) and do it myself.
If you are blowing 10 inches of insulation this would obviously end up above the plywood floor used for storage which means you would have less under the floor unless the height of the floor was raised.
The main problem I have is that part of the attic has plywood which we use for storage. I need to keep this storage space if at all possible. Is there a way to get to a good R value in my attic and keep the storage space as well? Thanks in advance.
Closed cell spray foam would be the only way to achieve the closet to your target R value under the plywood -- but -- it's very expensive and not a DIY project.
Side note ----I'd be concerned about only having 2x6 joists and having the weight of items being stored along with people walking up there.
"" an ounce of perception -- a pound of obscure "