Should I use Sealant when installing a roof hook or flashing? Which type?

It is important to put a compatible sealant into any and all holes drilled into a roof. Most roofing manufactures list a suggested, approved sealant in their specifications. In the freeze-thaw zones, it is important to follow the manufacturer’s rules for freeze-thaw conditions. Use the properly rated sealant for each specific application and condition. Some that may be more appropriate for asphalt/composition roofs include Geocell 3500 and ChemLink M-1 but be sure to do your own research to confirm a compatible and appropriate sealant with the materials you are using.


Source: Quick Mount PV

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