Interwrap Corp Titanium Roof Underlayment Roll, 286 ft L x 42 in W x 7 mil T, Synthetic per ROLL

A replacement for #15 or #30 oil saturated felt; designed for steep slope roofing under asphalt shingles synthetic shingles residential metal roofing and cedar shakes; 12 times stronger than #30 felt; meets and exceeds ASTM D226 Types I & II and D4689 Types II & IV; 8 square more per roll compared to #30 felt; easier to install - wider lighter and more coverage per lap; synthetic constructio