Corrigated tin roof

37chief

Well-known Member
Location
California
I am installing a roof on a shed using corrugated tin. I can have one peak, and two valleys overlap That should work. Will it be any better to move the tin over and have two peaks, and three valleys overlap. I have plenty of used tin which still has one good side. This is good old heavy guage tin made in the 50's. Any thoughts? Stan
 
I?d think the more overlap and the more screws the better. I remember seeing the roof blown off and in the middle of Main Street from a guy not using enough and to short of screws
 
two valleys are plenty. How does it work out for the full length of the building. Going three valleys, you lose an inch with each piece. Of course you can overlap the last piece as many as you want to avoid cutting if you desire. gobble
 
2 peaks would be better than 1 peak as the water would have to rise over 2 to produce a leak---increasing the roof pitch would also be very beneficial, unless you get ice dams.
 
"Plenty of used tin with one good side" means the underside to me. The holes in the peaks, where the nails were, become holes in the valleys when you flip it over to the good side. By your description it sounds like you are ending with the exposed seam on a ridge. You want to end with a seam in the valley, if it's on the ridge water can get into the first covered valley. I think you may have to work backwards if you flip the tin. Instead of left to right, you have to install right to left.
 
I will end up with a hole in a valley. I will buff the metal clean, and use epoxy to fill the hole, then two coats of Rustoleum, and a silver paint. The roof will probably out last me. Stan
 
I would plan on a dob of caulking for each hole. Most tin I have seen around here is nailed in the valley,flipped, the holes will be on the ridge. I have been looking for some tin myself,I am about to order new before the price goes up anymore.
 
Australia is the land of corrugated iron (actually coated steel).

No need to use epoxy to patch holes made by previous fastenings. There are good silicon sealers that will do the job cheaply and easily and last a very long time.
 

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