BGL risk PPGL PPGI many time hail rust Ease tiles steel leaks seams safety debris aluminum cleaning building corrosion occupants Longevity advantages protection tight seal Durability contraction performance labor costs other forms strong winds water damage replacements cost savings deterioration fewer repairs long lifespan Bare Galvalume good condition Fire Resistance Low Maintenance several benefits heavy snow loads asphalt shingles Painted Galvenise durable materials SwarajSEAM systems significant damage proper maintenance extreme temperature minimal maintenance concealed fasteners interlocking panels installation process Occasional inspections thermal roof expansion other roofing materials Metal roofing materials harsh weather conditions SwarajSEAM Roofing System SwarajSEAM roofing sheets experienced professionals pierced fix roofing sheets Standing Seam Roofing Clips traditional roofing materials exceptional weather resistance