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TOPIC: Installation Process

Galvalume Roofing Concerns

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We had a metal roof installed on our older farm house last year. The existing tin roof was removed and the new roof was placed on top of the old shake roof. [IMG]http://i119.photobucket.com/albums/o138/IloveJoe_photo/Roof/DSC_0046.jpg[/IMG] Since this installation we have had the roofers out for several leaks, improperly installed panels, box gutter seams and too few screws. We recently had a panel come off during a storm and contacted the roofer who had issued a 5 year warranty on workmanship because we feel the panel was improperly installed to begin with. [IMG]http://i119.photobucket.com/albums/o138/IloveJoe_photo/Roof/June2007roof.jpg[/IMG] Questions ::: Is there any industry standard that specifies seam placement on a metal roof? Should seams that face the predominate wind direction be under a leading panel or does it matter? This is the seam after re-installation using a scrap panel that I had stored outside this past year. [IMG]http://i119.photobucket.com/albums/o138/IloveJoe_photo/Roof/DSC_0006.jpg[/IMG] On the first photo of the peak shows the edge of the center panel on top and slightly lifted. This is the panel that came off. The second photo shows the re-install with the leading edge of the panel under the front one, in what we believe a more secure fashion. I hope the photos come through and my post is not too confused and rambling.
Guest User

7/31/2008
Maybe this photo will come through and you will not have to cut and paste the address to see the picture.
Guest User

7/31/2008
Such standards would come from the roofing manufacturer rather than the industry. Have you contacted the manufacturer? Todd Miller
Todd Miller
Isaiah Industries, Inc.

7/31/2008
Not yet. Isn't there a standard in the metal roofing industry that is non specific to manufactureer ie a commonsense rule?
Guest User

8/1/2008
Unfortunately I cannot access the photos you linked to but I did see the one you posted. To answer your specifi question, sure, common sense tells a person to not have seams and laps facing into predominate wind anymore than they must. There is no published industry standard on that which I am aware of though. But the products are tested to withstand uplift pressures designed to simulate wind, and that is irregardless of how the panels are lapped. Todd Miller
Todd Miller
Isaiah Industries, Inc.

8/1/2008
On this same roof, is there a concern about voiding the Gavalume warranty if screws used were too short? The roofer installed this roof over the old wood shae and the screws used were 1 1/2" in length.
Guest User

8/24/2008
In most cases, you will have a warranty from the product manufacturer covering product integrity and one from the installer covering installation workmanship which would include using proper fasteners. 1-1/2" fasteners are likely adequate. I think there may be more of an issue with inadequate number of fasteners. Todd Miller
Todd Miller
Isaiah Industries, Inc.

8/26/2008