I live is snow country, and there are lots of metal roofs around here. I'd
say metal outnumbers shingles.

Most houses I see have the colored metal with the exposed screws, which is
what I had on my last house. I talked to lots of contractors, many of them
friends of mine and they all raved over the metal. The metal is screwed to
the roofdeck, but if there are shingles underneath, strapping needs to be
used since the metal will expand and contract and can wear from the
shingles.

I never see "standing seam" roofs on residential homes around here, only on
commercial buildings, so I don't know much on that. I've not heard anything
about holes elongating. In fact, I've removed metal roofing and don't
remember anything odd about the old holes. I don't think it's an issue. I
know folks with 20 or 30 year old metal, and the surface needs new paint,
but no one ever complains about leaks. The new products now have "baked on"
finishes that have impressive warranties for the paint.

The only thing I did not like about my metal roof, is that it makes it
difficult to walk around up on the roof for chimney cleaning, painting etc.

jeff





"ptgoodman" wrote in message
news
Hi All,

Short question. Long answer?

Many people are using metal roofing in my area. But, they often use barn
or garage metal roofing which is attached using exposed metal screws,
directly thru the roofing to the underlying plywood or trusses. Home
metal roofing is attached in a different manner, very expensive to
install.

Anyway, I'm told that with the garage metal roofing, the roofing expands
and contracts as it heats and cools. The screws loosen in the wood
and/or elongate the holes thru the metal roofing as the roof works back
and forth. Leaks develop, etc. Home metal roofing is installed in a
different way.

I've heard of no complaints about their metal roofing. Can anybody tell
me if the above problem is actually a problem? One may be able to
tolerate minor leaks in a garage or barn but not a house. The source of
the above information is a very good carpenter/builder, knows his stuff,
and keeps current with building codes.

Email me directly if you want.

TIA,
koyaanisqatsi