TAMKO TW-Thru-Wall Flashing Membrane is a flexible, 40-mil, self-adhering sheet membrane consisting of a self adhering rubberized asphalt, a treated release film and high density polymer film as the top surface.

TW-Thru-Wall Flashing Membrane is an in-wall flashing membrane for use with concrete, masonry, gypsum or wood wall construction.

• Excellent tensile, elongation, and permeance characteristics
• The SBS rubberized asphalt sheet has high adhesive quality
• Treated release film for easier installation
• Puncture resistant, non-removable surface film is an 8-mil cross-laminated high-density polyethylene film
• Sheet available in 12", 18", 24", or 36" widths
• High temperature resistance up to 245° F
• Roll size is 225 square ft. (36" x 75'), or 150 square ft. (24" x 75') 

TW-Thru-Wall Flashing Membrane cannot be left exposed to sunlight longer than 60 days. Do not install when temperatures are below 40° F.  Membrane should not be brought into contact with products containing coal-tar pitch.