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ChristopherST26 Feb 2018 19:04Hello
I have a question about who is responsible for the costs. I started building my house in September 2016 and successfully completed it in October 2017. The house is single-story. My problem is that I have very large cracks between the walls and ceiling on the upper floor. They are almost 2 cm (0.8 inches) wide. The upper floor does not have a concrete ceiling; it only has drywall. Last summer, I installed OSB boards on the attic floor and screwed them onto the roof beams. According to the construction company, I should only leave space for ventilation at the sides and the gable. I followed these instructions. However, the site manager now tells me that the cracks were caused because the OSB boards expanded and, since they are screwed in, pushed the entire roof structure upward. Fixing this would cost me about 1000 euros.
About a week ago, I removed all the screws from the boards on the attic floor. The site manager said the roof structure would lower again, but so far nothing has happened. The cracks are at the top of every room. I screwed the OSB boards onto the attic floor in July of last year, and the cracks appeared in November.
Is it really possible that the OSB boards could push the entire roof structure upward by almost 2 cm (0.8 inches)? I would be very grateful for any advice, as I don’t really understand this issue.
P.S. If pictures are needed, I can provide them without any problem.
Thanks in advance.
Best regards
I have a question about who is responsible for the costs. I started building my house in September 2016 and successfully completed it in October 2017. The house is single-story. My problem is that I have very large cracks between the walls and ceiling on the upper floor. They are almost 2 cm (0.8 inches) wide. The upper floor does not have a concrete ceiling; it only has drywall. Last summer, I installed OSB boards on the attic floor and screwed them onto the roof beams. According to the construction company, I should only leave space for ventilation at the sides and the gable. I followed these instructions. However, the site manager now tells me that the cracks were caused because the OSB boards expanded and, since they are screwed in, pushed the entire roof structure upward. Fixing this would cost me about 1000 euros.
About a week ago, I removed all the screws from the boards on the attic floor. The site manager said the roof structure would lower again, but so far nothing has happened. The cracks are at the top of every room. I screwed the OSB boards onto the attic floor in July of last year, and the cracks appeared in November.
Is it really possible that the OSB boards could push the entire roof structure upward by almost 2 cm (0.8 inches)? I would be very grateful for any advice, as I don’t really understand this issue.
P.S. If pictures are needed, I can provide them without any problem.
Thanks in advance.
Best regards
K
Knallkörper26 Feb 2018 19:14Don’t be fooled by that. Why should the OSB boards expand? And if they do, how would they lift the roof structure?
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ChristopherST26 Feb 2018 19:33Due to temperature fluctuations—since the attic is very cold now and the upper floor is warm—and because the panels are screwed in place, they cannot expand sideways and therefore expand upwards. The roof structure is not insulated; it is already quite cold up there. However, I had a carpenter take another look two days ago—he had helped me before—and he said he had never seen anything like what the site manager is telling me. That’s why I wanted to ask if this really can happen :-( … I tried to upload a photo, but I get an error message saying “The file is too large”…
K
Knallkörper26 Feb 2018 19:39Sorry, but this is nonsense. Where should one even start? I would send a written notice of defects with a deadline for rectification by registered mail. If you are unsure about the correct format, get help from a lawyer or an expert.
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ChristopherST26 Feb 2018 19:45Ok, many thanks for your quick help, then I will proceed more or less in that direction... Because it also seems a bit strange to me that such thin OSB panels would support an entire roof structure including the cross beams in the attic by pulling them upward...
ChristopherST schrieb:
Due to temperature fluctuations, because the attic is now very cold while the upper floor is warm, and since the panels are screwed down, they cannot expand sideways and therefore expand upwards. The roof structure is not insulated; it is already very cold up there.I have rarely heard such nonsense. OSB panels are quite versatile and capable of many things—but lifting a roof structure??
Haha.
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