Quick roof over question

Lanceam24 · Wed Dec 09, 2015 12:02 pm

Almost ready to tack my metal roofing down. The book shows the roofing screws through the raised part. I was told the screws go through the flats of the panel. Which way is right?

yakima4$ · Wed Dec 09, 2015 3:45 pm

Always follow MFG specs. If problem occurs, MFG (roofing) rep comes out and inspects and you did not follow install instructions, they have no warranty obligation.

Greg · Wed Dec 09, 2015 5:58 pm

You screw through the raised rib. Water from the rain is usually not a half inch deep on your roof. Be sure to use roof screws with the gaskets and don't over tighten. You can also use a thin bead of sealer at the seams.

Greg

Lanceam24 · Thu Dec 10, 2015 3:50 pm

What is the reasoning behind putting them on the ribs? Is it because these will b mostly out of any water on the roof?

I recently acquired a bunch of 1/2" foam for cheap, I laid the foam out and put the furring strips on top and have a lot left over. Is it ok to use the extras BETWEEN the strips? This would help with insulation right?

Greg · Thu Dec 10, 2015 7:37 pm

Yes, that is why the screws go into the ribs.

Putting foam between the strips WOULD help the insulation, but it may also create a condensation issue since you would have no air space under the roof.

Greg

Lanceam24 · Thu Dec 10, 2015 9:56 pm

A lot of the ceiling is still open and I was having horrible condensation issues in the open parts. So bad to where I could see it dripping. It doesn't help that I'm in South Louisiana where it's 70 degrees during the day time and 35 at night. The layer of insulation I put up under the furring helped quite a bit