Dave H (MI)
Well-known Member
Was reading about this subject on another forum earlier in the month. We are putting in a bole building. The one topic that really gets people going with the opinions is whether to use a metal roof or traditional shingles. I like the look of shingles but was inclined to go metal because I thought it would last longer. Half the contractors quoting agree with that. The other half are pointing out that the metal roof has a lot of exposed fasteners with rubber washers on them and they say these will not last in the hot sun and that then the holes will be free to open up with expansion and contraction of the metal. This will let water in on your trusses and eventually rot them. This is a really hard choice to make.
Basically, no contractor wants to put metal on trusses with or without a barrier. The two options given are:
1) Traditional roof with a higher end shingle, light color to reflect heat, over OSB.
2) OSB roof covered with a vapor barrier, metal over the barrier. In theory if you have a bad washer water runs down the barrier I guess.
Just wondering if any barn owners could help me out. I need to make a choice this week to get on the list for the contractor.
Basically, no contractor wants to put metal on trusses with or without a barrier. The two options given are:
1) Traditional roof with a higher end shingle, light color to reflect heat, over OSB.
2) OSB roof covered with a vapor barrier, metal over the barrier. In theory if you have a bad washer water runs down the barrier I guess.
Just wondering if any barn owners could help me out. I need to make a choice this week to get on the list for the contractor.