Products / DynaLastic 250 FR CR G

Johns Manville's fire-retardant, heavy-duty polyester-reinforced SBS modified bitumen cap or flashing sheet for multi-ply roofing systems, surfaced with bright white reflective roofing granules for cool-roof performance. The membrane blends elastomeric SBS rubber and asphalt with fire-retardant additives, offers full recovery after 100% elongation, and is manufactured to ASTM D6164 Type II Grade G.