John, have you noticed that roofing metal has gotten even thinner gauge?!
Alaskan suppliers oughtta be ashamed of the uber-thin sht they're selling
From my experience the typical panel from SBS, Northland wood, uresco and now the box stores has been 29 / 30 ga for awhile.
26 is usually a special order, although I think All Steel stocks 26ga coils nowdays.
Most people don't want to spend the extra money for the heavier gauge.
And, if its on plywood, it's ok.
If it's over purlins, you can sure tell when you're walking around on it!
Wonder what gauge is on our barn from the 70s. I know back then no one drilled, and you should could blue your thumb trying to start lead head nails sometimes with the bounce and miss. need to ospho that barn and repaint the galv a few years ago but keep running short of time..
John, have you noticed that roofing metal has gotten even thinner gauge?!
Alaskan suppliers oughtta be ashamed of the uber-thin sht they're selling
From my experience the typical panel from SBS, Northland wood, uresco and now the box stores has been 29 / 30 ga for awhile.
26 is usually a special order, although I think All Steel stocks 26ga coils nowdays.
Most people don't want to spend the extra money for the heavier gauge.
And, if its on plywood, it's ok.
If it's over purlins, you can sure tell when you're walking around on it!
Wonder what gauge is on our barn from the 70s. I know back then no one drilled, and you should could blue your thumb trying to start lead head nails sometimes with the bounce and miss. need to ospho that barn and repaint the galv a few years ago but keep running short of time..
Good question, I have a few old buildings with old roofing, but never pondered the gauge of the metal.
When they use to nail on metal roofs, they would nail through the "high hats", the tension of the rib on the washer was good enough, and they rarely leaked because the water ran down on the low part of the sheets and there were no holes in that area.
Didn't make a lot of difference if they washers under the head of the nails were a little loose.
Once they started using screws the manufacturers recommended installing on the flats because people would overtighten and spread the sheet.
They also got real specific about not over tightening the screws and deforming the neoprene washers.
I did a roof for a guy that worked for Ghem Co years ago and he wanted me to put the screws on top the ribs, which I did. Took me awhile, but I now know why!
