Holes in Unvented Metal Roof
Posted this on FHB, but thought I might as well here as well. We are doing a 2nd story addition + finished attic with a standing seam metal roof (White galvalume preformed sheets). Open cell foam is to be sprayed between the roof rafters for insulation. Located in Va. Roofers left 12 3×4 inch holes at the ridge truss juncture to tie their safety harnesses. Holes were made with a hammer and went through the OSB and underlayment. In some cases metal was bent into the hole. In others, they were covered with metal sheet. Due to COVID, inspections are being done via camera phone. Inspection passed. I don’t think the inspectors saw this. Some of the flashing is questionable as well.
Contractor has said the following:
1) Don’t worry. They under the ridge cover. Cover appears to be 3-4 in on each side so it’s close.
2) Will patch with metal below ridge cover and Bondo and wood below before foam.
3) It “passed inspection”.
To go back to square one would involve removing the roof, replacing the sheathing and underlayment and reroofing which is an expensive proposition and time consuming.
My main concern is:
1. Will this patch work?
2. Will it last for the life of the roof? It will be between foam and metal.
3. Will open cell foam be ok?
Pictures show holes before any patch(2)
After metal only patch and pre-Bondo + wood (2).
Sidewall flashing juncture for different roof levels. Board is Hardy Plank.
Contractor wants to patch and foam now. I’ve not agreed pending verdict on holes patches. I’m calling in roofers to get some additional opinions but it’s a slow process given how busy they are these days and this type of roof is now common.
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