Roofing sealants haven’t changed — solar flashing methods have
Sealing the holes required in most rooftop solar installations is one of the most critical steps in ensuring a waterproof installation. After drilling pilot holes into roof rafters, contractors will fill the holes with sealants such as MS polymer, silicone or butyl to prevent leaks throughout the array’s lifespan. There isn’t a one-size-fits-all sealant in…