Photo voltaic roofing possibilities broaden. Important roofing companies GAF and CertainTeed have joined Tesla in introducing photovoltaic—aka photo voltaic—roofing shingles for households. CertainTeed’s Solstice shingle seems to be more like a traditional shingle than GAF’s Timberline product, which incorporates perpendicular bars throughout the shingle array. Federal tax credits now... https://connertiwva.dailyhitblog.com/32173210/a-secret-weapon-for-roof