Metal Roof Insulation - The Outdoor Community
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post #1 of 6 (permalink) Old 09-06-2012, 01:26 PM Thread Starter
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Metal Roof Insulation

How would you best insulate a metal roof? Metal roof nailed directly to trusses. Metal roof visible from underneath. Concerned about condensation and loss of heat (etc.). Thanks for the help.
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post #2 of 6 (permalink) Old 09-06-2012, 01:41 PM
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Re: Metal Roof Insulation

Commercial spray foam acts as a vapor barrier and a thermal break
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post #3 of 6 (permalink) Old 09-06-2012, 07:02 PM
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Re: Metal Roof Insulation

It's aready in place? Because I would think that it should be over the plywood or OSB. Not nailed directly to the trusses.

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post #4 of 6 (permalink) Old 09-06-2012, 07:10 PM
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Re: Metal Roof Insulation

I have a metal roof on my barn that's screwed directly to the trusses.I'm also pondering the best way to insulate it.
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post #5 of 6 (permalink) Old 09-06-2012, 10:48 PM
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Re: Metal Roof Insulation

Two different ways I think you could do it...using standard foam baffels and fiberglass insulation? Or could use radiant barrier (comes in different R value)?

If using the baffels staple them right up tight on the roof to the side of the truss and then add regular insulation. Or if using the radiant barrier roll it out across the truss and staple to the bottom side of the truss.

I in now way am a professional or know what Im doing but those two options seem practical. Might not be a bad idea to contact the supplier of the roof and ask for their opinion
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post #6 of 6 (permalink) Old 09-07-2012, 05:44 PM
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Re: Metal Roof Insulation

I had my new metal/synthetic coated roofing put on right over my conventional roof that had just been installed 6 months earlier. Tyvek in between the original roof and the
new metal/synthetic coated roof. No sweating, big time noise reduction and great insulation.
Pine Creek/Dave

We roofed every building on my property in this manner and it worked out great.

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