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Sloped ceiling insulation problem
I have a 100ish year old house in Norwich CT.
The ceilings of all the rooms in the second floor of the house are bisected by the roof so that in one case there is 5 feet of flat ceiling and 4 feet of sloped ceiling. When I moved in the house there were several inches of cellulose between the (flat) ceiling joists on which I have rolled out unfaced batts of fiberglass. However, the sloped areas which obviously only have a few inches of space and very limited access have some cellulose which has been nested in by squirrels and mice. (long since evicted and barred from entry). Some of the bays have no insulation at all. I’m trying to figure out how to correct the insulation in the sloped areas.
One issue is that there was a fire in the house ages ago which basically burned the roof off. Some of the burned stubs of the rafters are still there and new rafters were sistered to the old ones and some were completely replaced. The result is that the spacing’s are not conventional and are inconsistent. I tried once to cut a batt of insulation to fit and feed it in with a long stick with a nail in the end. This worked a little but the batt kept catching on the roofing nails and low and behold the replacement rafters were not spaced exactly the same, top to bottom, so the bay tapers and the batt was bunching up. I lost a lot of skin that day and gave up.
I thought of blowing in more cellulose but how would I maintain the required are space above it? Because of the limitations I already mentioned it’s impossible to use the spacing material available at hardware stores.
If I want to just completely fill the bays with cellulose, I am “unvented” and need to insulate the roof deck which means replacing the shingles, Which are only ten years old. I understand I could have the bays filled with foam and would not need to insulate the roof deck. I do a lot of DYI but this seems like something that should be done by a pro.
I had an insulation contractor over and he did not want to touch it. He wanted to remove the fiberglass batts I rolled out in the attic and blow in more cellulose arguing that not much heat is lost through the sloped areas and poor the fiberglass is. There may be a little truth to that but if I stand in the room on a sunny day I can feel the heat radiate off the slopped ceiling.
I really hate having this area that I can’t seem to do anything with. I will be grateful for any comments and ideas on this.