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Thermafiber® RainBarrier® Continuous Insulation

Thermafiber® RainBarrier® Continuous InsulationThermafiber® RainBarrier® Continuous Insulation products are designed for exceptional performance in rain screen and cavity wall construction applications. New RainBarrier HD & RainBarrier 45 provides energy-saving continuous insulation (ci), fire protection, and acoustical control while efficiently draining water from a wall cavity system. RainBarrier products are non-combustible and compatible with common wall ties and air barrier systems. RainBarrier® has several distinct advantages over other insulation products in these types of construction:

  • Non-combustible and fire-resistant. RainBarrier can withstand temperatures over 2000°F for over 5 hours. In the event of a fire, mineral wool will not burn or release toxic smoke and gasses.
  • Reduces thermal bridging and increases overall R-value. Thermal bridging is a type of heat loss that occurs when heat flows through the building envelope via a continuous path, such as through wood or, more commonly, highly conductive steel framing members. Thermal bridging affects the whole wall R-value.
  • Simplifies the installation of continuous air and water barriers. By creating continuous insulation, the air and water barrier can also be installed in the exterior wall cavity with minimal interruption.
  • Reduces moisture concerns. Continuous insulation reduces the possibility of condensation within the wall when warm, moist air is prevented from reaching a dew point temperature.
  • Permeable. In a vapor permeable system, RainBarrier® allows the building to breathe as it is designed without sacrificing R-value. In a non-permeable system, RainBarrier allows the vapor barrier to perform without creating additional traps for moisture in the wall cavity.
  • UV resistant. RainBarrier is ideal for use in open joint systems where UV rays can degrade other insulations.
  • Easy to fabricate and install. Semi-rigid mineral wool can conform to job site irregularities much better than rigid insulations to ensure a continuous thermal barrier.
  • Sustainable. Available with a minimum 70% recycled content. No CFC or HCFC blowing agents. Energy-saving R-value of 4.3 per inch of thickness.
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