“Tar paper” underlayment (asphalt-impregnated roofing felt) during the installation of an asphalt shingle roof.

“Tar paper” underlayment (asphalt-impregnated roofing felt) during the installation of an asphalt shingle roof.

“Tar paper” underlayment (asphalt-impregnated roofing felt) during the installation of an asphalt shingle roof.