Sarnastacks are made with the same time-proven, high-quality ingredients used to manufacture Sarnafil® PVC membranes. Sarnastacks are factory fabricated using weld technology that assures watertightness

  • Sarnastacks simplify the flashing procedures for various penetrations, reducing the risk of leakage at small to typical pipe size penetraion details.
  • Sarnastacks are available in 5 different sizes (See back page for schedule of sizes). Sarnastacks are heat-welded in place and terminated at the top of the penetration, completing the pipe penetration flashing.