Metal roof or shingles?

[bigv]

We've had some bad storms where I'm at last ten years. I know several that went tin. They just put it over shingles. Not directly on though...you screw down runners and attach to them.

 

[BrokenBackJack]

When they did our big quonset 10 years ago, they went over the shingles.
They put 2x4 purlings over the shingles and then screwed the metal roof to the purlings.

 

[Traxion]

If the hail is big enough to hurt shingles, it will hurt metal too. Metal can live at lot longer after hail, but I don’t think it’s worth it. You need to protect your entrances with snow guards for sure. Depending on roof slope you may need it to keep your gutters on too. Penetrations of any type suck on steel. With the cost difference I think for most shingles make more sense.

 

[guywhofishes]

Tesla should get into the metal roof business.

 

[risingsun]

I went over the top of a single layer of shingles with tin. Used 1 x 4's to attach the tin to. No issues at all.

 

[Allen]

I wonder, for those that put metal over shingles using purlins, if mice ever make their home up in the space between the metal and the shingles.

I know a couple down in AZ with kind of a goofy little niche created where an overhang meets the roof. Who would have suspected a rat would setup his little house in there? I've offered to shoot it a couple of times as he poked his head out while we're having beers.

 

[Traxion]

One interesting thing I’ve experienced is putting metal or shingles over SIPS roof panels. They’re totally solid under the roofing and surprisingly both materials hold up much better to hail. There’s no give under it so they don’t dent or damage as easily. With that experience, I’d guess steel over shingles would dent easily. Probably similar to steel over purlins.

 

[NodakBob]

I wonder, for those that put metal over shingles using purlins, if mice ever make their home up in the space between the metal and the shingles.

I know a couple down in AZ with kind of a goofy little niche created where an overhang meets the roof. Who would have suspected a rat would setup his little house in there? I've offered to shoot it a couple of times as he poked his head out while we're having beers.

Squirrels or hornets?