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re: Is caulking a metal roof expensive?
Posted on 4/17/24 at 11:42 am to cgrand
Posted on 4/17/24 at 11:42 am to cgrand
In my experience metal roofs require caulk on all penetrations. Which would be plumbing vents, gas vents, and ventilation. I'm interested because I want to put a metal roof on my camp, but don't like the idea of caulking a roof.
1
Posted on 4/17/24 at 12:18 pm to Specktricity
no
silicone caulk actually rots metal roof panels.
a correctly installed and flashed roof penetration should never need to be caulked. Likewise, metal roof fasteners include a neoprene washer to seal the screw hole. Those fasteners should be replaced every 10-15 years
A metal roof properly installed in good condition does not need caulk, anywhere. Caulk is (improperly) used as a stopgap repair
silicone caulk actually rots metal roof panels.
a correctly installed and flashed roof penetration should never need to be caulked. Likewise, metal roof fasteners include a neoprene washer to seal the screw hole. Those fasteners should be replaced every 10-15 years
A metal roof properly installed in good condition does not need caulk, anywhere. Caulk is (improperly) used as a stopgap repair
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