WHAT DOES ROOFING EXPERTS MEAN?

Solar roofing alternatives expand. Big roofing producers GAF and CertainTeed have joined Tesla in introducing photovoltaic—aka photo voltaic—roofing shingles for houses. CertainTeed’s Solstice shingle appears to be a lot more like a standard shingle than GAF’s Timberline product, which includes perpendicular bars across the shingle array. F