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Roofing/Metal roofing screw problems

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Big Red wrote at 2008-03-23 23:55:24
I built my house in 1999 and have experienced the same problems with the screw backing out and in some cases falling off the roof. My wives family are in the roofing business and have no remedy for this problem. I have considered tightening the screws and going under the roof and bending them over so they would bite into the wood and not turn. I think the elements I.E. sun, rain, clouds etc. cause the roof system to expand and contract through the day causing the fasteners to turn during this process. I feel your pain but don't know the answer.


merrill wrote at 2008-09-08 21:34:54
I can't give you a solution, but I experience the same issue with the screws on my mountain home in the Lake Tahoe area.  My house was build in 1995 with fir supports and plywood shething.  I have to tighten all the roof screws each year.  I was hoping that there is a screw with a barb or something that would help


Steve wrote at 2009-05-26 14:51:32
I would use a screw long enough to go thru the 1 X 4 and all the way into the osb or plywood. stainless will not react with galvanized.


joey wrote at 2009-06-06 02:10:35
If you wish to stay with a wood product the best I have found is Sycamore. This wood contracts as it dries. The screw will not back out. The bad part is you need to nail it down quickly or it will warp badly. Especially when left out in the sun.


DOUBLETAP wrote at 2015-10-25 22:19:44
I have used adhesive caulking on the threads(like PL2000) and that has helped.take out screw and put a some on the threads and put back in..DON'T OVER TIGHTEN.


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Mark Sundberg

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Architecture, structure, construction.

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27 years licensed architect, work in 12 states. Currently working in Hawaii. Over 1000 buildings designed or worked on in a significant role 3 years quality control officer for Navy construction projects.

Education/Credentials
Bachelor of Architecture, Cal Poly, San Luis Obispo, CA. 1977.

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