Getting new metal roof AGAIN


  #1  
Old 02-08-16, 10:21 PM
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Getting new metal roof AGAIN

Hi,
to make long story shorter;
My 13yo metal roof blew off last weekend with all the wood battens that it was attached to.
Getting estimates when roofers are busy proves to be an experience.
Got one company telling me that;
a. I don't need any insulation between the roof and the decking, it will actually harm the cooling of my roof by blocking the air flow.
b. I don't really need the plywood decking because the skip sheeting I have now provides the same amount of strength as the plywood can.

Any suggestions? Recommendations?

The metal roof I am getting is by Gerard if it matters.
 
  #2  
Old 02-09-16, 03:04 AM
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The attic floor gets insulated, not the underside of the roof.

My house has a metal roof attached to strapping secured to the rafters. We get a lot of wind and while the roof might rattle at times it has stayed secured. I do get up on the roof every several years and double check the nails/screws to make sure everything is tight. IMO the biggest advantage to having sheeting under the metal is it makes the roof stiffer when you walk on it.
 
  #3  
Old 02-09-16, 04:10 PM
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Thank you Marksr

I think that's what the installer is saying, that you need to insulate the attic only.
The part where I need/want to replace the old insulation is inside the vaulted ceiling.
Completely agree with the solid deck thing, because unless you know exactly how to walk on the metal roof it's real easy to mess it up.
Plus, I think that fairly smooth surface of the plywood can provide for a little better air flow beneath the metal sheeting compare to bouncy surface of the wood planks.
 
 

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