Loud Noises From Unvented Cathedral Ceiling
Hi all – hopefully someone can offer some help on a serious issue we have. I recently bought a large log home outside Blowing Rock, NC that from the first night we stayed in it has made really loud cracking/crunching noises coming from the roof. Enough so that the first night I almost got out of bed to see if a bear was on the roof…its that disturbing. Seller had told us night before closing that the roof (which was metal when we bought it…more on that in a second) would make some “popping” noises in early evening and late morning, and that several roofers over the years told him roof was fine, its just what metal roofs do as they expand and contract with temp changes. Well, it is not little popping noise, rather it sounds like someone on the roof, and it happens almost all day and night (about 4am-9am is about the only quiet time). So we bit the bullet and ripped off the metal, down to the decking, and had new shingled roof put on….same thing, if not worse! Thought I was going to lose my mind. And this time, I noticed it happens not only with temperature rise, but wind as well. When we get some 20+ mph gusts, you will hear it almost ripple thru the house…like the whole roof is one big sheet (its actually three separate pitches…two rather shallow, one that’s 10/12).
It is an unvented cathedral ceiling with exposed beams 48″ on center, and T&G (I think 6″). Then there is about 4-6″ rigid foam board, then OSB and then shingles. If it helps, on the first day, after the roofers ripped off the metal roof, and got it down to the OSB, they took a lunch break, and I heard the noise even then…so it made noise without any shingles or metal.
Is it possible the foam board and/or OSB are not screwed down well enough? The roofers said the OSB was secured with long screws, not nails. And when they walked over it, it felt solid.
I am at loss. I have talked to 4-5 roofers locally and none have any idea. We have to fix this, and I know it will mean a re-roof, but we cannot stay in it, nor rent it out when it makes such scary noises all the time. I am actually going there tomorrow with the roofer to “biopsy” the roof by taking off some shingles and removing one of the OSB panels to investigate. Will see exactly what foamboard is there, how thick, if its glued in, etc. Meantime, ANY help appreciated!
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