Installing a Metal Roof on a Barn: Hire a Pro
LESLIE: Now we’re heading on over to Kansas where Russ has a roofing question. What can we do for you?
RUSS: OK. I’ve got a farm that I bought eight years ago and on the farm, there’s a very large, very old barn. A matter of fact, the loft is large enough that you could probably fit a regulation-sized basketball court inside of it. According to the graffiti inside the barn, it was built in either ’34 or ’38. And it was done originally with cedar-shake shingles with 1×4 stringers, what, about every 4 inches or about a 3½-inch space in between them.
TOM: Yep. I know the construction well.
RUSS: OK. And as you know, those cedar shingles are not going to be in very good condition as of this point. So I know I’m going to have to go up there. Trying to figure out a safe way to work up there so I can remove the cedar shingles, so I can prep it to go back with, probably, a metal roof. The question is – I’ll have to screw the roof down. The question is: am I – will I be able to go directly with the 1x4s with the metal roofing or would I be better off nailing everything fully and putting down some plywood or OSB?
TOM: Well, I think that a good roofer could work with the 1-by furring strips that are up there right now. Because, frankly, that’s the way metal roof was originally put down. It wasn’t put down on solid sheathing; it was put down on strips just like that. So I think that that’s a fine option for you. I don’t think you need to do the sheathing in this particular case.
If you were going to put down asphalt shingles, I’d tell you you need to sheathe it. But for a metal roof, you may have to do some additional carpentry to get the strips where you want them, to make the seams on the roof and so on, but I don’t see a reason for you to sheathe this barn. I think the metal can go right on top of that.
RUSS: OK. So patch the rotted 1x4s and maybe put in some where the seams are and we should be good that way?
RUSS: OK. Do you have any suggestions on how to safely work on a 45-degree pitch?
TOM: Yeah. Call a roofer. It’s not a do-it-yourself project. I mean that’s a really high-end project and if you do it every day, you have all the appropriate safety gear and scaffolding and skill set to be able to work on that. That’s a very dangerous place to try out your do-it-yourself skills because handling those big sheets up there, you get a wind gust and you start flying off the roof. Those medical bills add up very quickly, so I would definitely recommend that you have a professional do this.
TOM: Alright. Good luck with that project. Thanks so much for calling us at 888-MONEY-PIT.