re: Metal roof question

Standing seam is not the same as screw down metal roofing. Standing seam is a hundred year roof. I 'am not a roofer and don't know how it is fastened, but there are no holes in the metal. My house had a small section that called for standing seam but it was going to cost about nine grand so I just went with seal tab.

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That sucks. Bad installation? Or is it common

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Very common, they swell and contract with the weather and notorious for leaks. There are high end here builders who refuse to install them.

If you go metal, standing seam is 10 times better than an R panel for the life of the roof. A standing seam roof system properly installed, will never leak.

I don't understand why someone would put a metal roof on a house over shingles other than simple aesthetics. I am in the commercial industry and build several PEBs a year. We push standing seam panels over R panels every day of the week. The increase of cost on the roof is offset numerous times over after recognizing the savings by changing from a convential steel building to a PEB.

I've done many Berridge double locks on buildings that have a low slope. We did 20,000 SF of a 1:12 a few months ago.

Work for a general.

Also, no one has mentioned, I've seen metal roofs leak in valleys where they tie into another roof if it's a real heavy rain and wind. The way they lap shingles the same roof would be no issue.

No, not McMath. I don't even know what Don has going on right now on the north shore besides the debacle that is the new Crime Lab.

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I built in 2013 and went with a Galvalume metal roof.My house is a farmhouse style with 12 on 12 and it breaks to 6 on 12. I have 4603 sqft under roof and it cost 15800 for the complete job.The guy that did mine has been metal working for 30 years and did a great job.He used ZAK screws which have a metal hood over the gasket so it doesnt see sun or rain.My roof is decked with 7/16 OSB for strength.I went with a synthetic felt and put 2x4 lathing on it.It came out dang good and I would do it again.I never priced shingles so not sure how it compares that way.

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Hooded screws are a great solution for a panel roof. I agree that exposed washers on the standard fasteners are a weak point for metal roof installation.

Standing seam is the ultimate system but can be a deal breaker for a residential application due to cost.

There really is no such thing as a "lifetime" roof but a standing seam metal with a good finish on it comes close.

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A premium 3D shingle will do that fairly easily.

Obviously, YMMV, but you can shingle a roof several times for the cost of standing seam.

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I hear what you are saying but in practice what I see from most architectural shingles in BR is life in the high teens, 20 max.

That's not to say there haven't been some that make it longer but IMHO that is the exception not the rule. Additionally, the 25 year one will likely have some performance issues for several years before a replacement is forced (nail pops, broken tabs, leaks at ridge caps, etc.).

The storm history in the BR area has been a significant factor though. Even roofs that didn't require replacement have seen some severe conditions for the last decade or so.

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Yeah, I agree re: the storm damage.

I was assuming no weather issues, trees, etc.

I've just had great luck with shingles and piss-poor luck with metal.

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I agree with your sentiment that for 99% of people shingles are the way to go. Besides if your building in a subdivision metal is usually not an option nowadays.

This also depends on how cut up the roof is. Even the best metal guy will have challenges with multiple valleys/gables/knee walls, etc.

But if you had a raised acadian on private land and you wanted the ultimate roof that could last the rest of your life a standing seam metal might do it.