- Kozy Kollar is perfect for radon mitigation systems and at WRD, we sell our Kozy Kollars in 3” and 4” sizes.
- Easily installed from inside the building by one person in 10 minutes.
- Allowable Roof materials for Kozy Kollars: three tab conventional shingles, architectural shingle, metal roof with solid substrate, and rolled roofing with solid substrate.
- Kozy Kollars are designed for roofs that are flat to 14/12 pitch.
- The Kozy Kollar Forms a weather-tight seal on four sides, eliminating the problems caused by wind, rain, or snow.
- Install in any weather, even winter.