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Help with metal roof Dick Keats 05-23-2008
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Posted by Dick Keats on May 23, 2008, 6:24 pm
Building a new house and want a standing seam metal roof.
Need help determining how is should be constructed.
Material is 22 ga.
Above the rafters, one roofing guy says radiant barrier OSB, 30# felt paper,
metal.
Another wants to put the metal on 1" x 3" lath. Nothing else.
Any help/suggestions will be appreciated.
Thanks in advance.
Dick



Posted by Glenn on May 23, 2008, 6:53 pm

> Building a new house and want a standing seam metal
> roof.
> Need help determining how is should be constructed.
> Material is 22 ga.
> Above the rafters, one roofing guy says radiant
> barrier OSB, 30# felt paper, metal.
> Another wants to put the metal on 1" x 3" lath.
> Nothing else.
> Any help/suggestions will be appreciated.
> Thanks in advance.
> Dick
I would go with the 30# felt. Temp changes with metal
is going to give some sweating and you want your
sheathing to stay dry. 30# felt is cheap anyway.


Posted by Dick Keats on May 23, 2008, 7:04 pm

>
>> Building a new house and want a standing seam metal roof.
>> Need help determining how is should be constructed.
>> Material is 22 ga.
>> Above the rafters, one roofing guy says radiant barrier OSB, 30# felt
>> paper, metal.
>> Another wants to put the metal on 1" x 3" lath. Nothing else.
>> Any help/suggestions will be appreciated.
>> Thanks in advance.
>> Dick
> I would go with the 30# felt. Temp changes with metal is going to give
> some sweating and you want your sheathing to stay dry. 30# felt is cheap
> anyway.
Thanks for the input.
Would you have an opinion about a gap of some sort between the OSB and the
metal to permit heat to be channeled up and out?



Posted by on May 23, 2008, 7:21 pm
> Building a new house and want a standing seam metal roof.
> Need help determining how is should be constructed.
> Material is 22 ga.
> Above the rafters, one roofing guy says radiant barrier OSB, 30# felt pape=
r,
> metal.
> Another wants to put the metal on 1" x 3" lath. =A0Nothing else.
> Any help/suggestions will be appreciated.
> Thanks in advance.
> Dick

Check out the forum on:
http://www.metalroofing.com/
It covers everything you want to know about metal roofing. Since
there's many different types and applications, you really have to do
your homework if you plan on going with metal.



Posted by Raider Bill on May 24, 2008, 11:12 am
On May 23, 7:21=A0pm, jimbobmitch...@verizon.net wrote:
>
> > Building a new house and want a standing seam metal roof.
> > Need help determining how is should be constructed.
> > Material is 22 ga.
> > Above the rafters, one roofing guy says radiant barrier OSB, 30# felt pa=
per,
> > metal.
> > Another wants to put the metal on 1" x 3" lath. =A0Nothing else.
> > Any help/suggestions will be appreciated.
> > Thanks in advance.
> > Dick
>
> Check out the forum on:http://www.metalroofing.com/
> It covers everything you want to know about metal roofing. =A0Since
> there's many different types and applications, you really have to do
> your homework if you plan on going with metal.

With a gap between osb and metal you will get condensation. I used 30
# doubled with the metal mounted right on top.

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