Master Flow® Zinc Moss & Mildew Preventer ‑ NMM50 Specs

      Master Flow® Zinc Moss & Mildew Preventer ‑ NMM50 Docs

      Master Flow® Zinc Moss & Mildew Preventer ‑ NMM50 Videos

      Protection
      PROTECTION
      Helps protect your roof against moss and mildew growth
      Easy
      EASY
      Installs easily near the roof ridge for reliable protection
      Convenient
      CONVENIENT
      For asphalt shingle, wood shake, or tile roofs

      Where to buy

      Find a GAF distributor near you.

      Find a contractor

      Find a GAF certified contractor near you.