Roofers
generally don't make roofing materials. At the same time, roofing
manufacturers don't install or repair their products themselves,
unless they also double as a roofer.
Roofing
manufacturers like GAF and CertainTeed primarily focus on making the
shingles, shakes, and panels homeowners put on their roofs and walls.
Though they rarely interact directly with their end clients, the
homeowners, manufacturers still have a duty to them. They can avoid
gross negligence issues by producing quality products and offering a
list of certified...