AboutMichael J. Owen Expertise Pretty much anything about roofing, particularly asphalt shingle and metal. Replacing damaged sheathing/plywood etc.
Questions about venting attic spaces.
Experience Twenty years of repair, new roof, roof overs and truss work. Still enjoy "getting on the roof".
Organizations None
Publications Just had my late mothers book published. A murder mystery set in England.
Education/Credentials High school, College graduate in England. Now living in Panama, Central America after living in the U.S. for 25 years .
Awards and Honors None
Past/Present Clients Way too many to list in England, California, Bahamas, Florida and Georgia.
Question My roof on my lake house is looking waivy and uneven, the house is 36 years old and only used in the summer, the area it's in get's about 200 inches of snow per year and I want to know what the cause and fix is for the repair. The venting doesn't look real good and I am worried that it could potentially cave in under the extreme weight of the winter snow in the coming year/s. Thanks
Answer Hi Bruce. I would suspect that what has happened is the roof decking, whether it be plywood or OSB, has got wet or damp and is sagging down between the roof trusses due to the weight of the snow. If the waves are about 24 inches apart, then this is most likely the cause.
The problem should be visible from inside the attic providing there is access to it. This can't be fixed by adding wood between the trusses because it will pop the nails/screws at the edges.
Perhaps it is time for a new roof with at least 5/8" - 3/4" plywood or better yet, 1" x 4" or 6" pressure treated boards.
Also I would check that there is sufficient ventilation to the attic space.
Hope this helps and good luck.
