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CavClear Rainscreen Mat - HD

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CavClear Rainscreen Mat - HD


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CavClear® Rainscreen Mat - HD
Applications
CavClear® Rainscreen Mat Heavy Duty (CCRS-HD-020) is a non-compressible, permeable mat engineered for installation behind fiber cement board, cedar, vinyl and aluminum lap siding applications to manage both moisture and moisture vapor.

Background and Use
Moisture management is the most important factor to ensure problem-free performance of any building enclosure system. No cladding system is completely water-tight. Moisture will find its way into exterior walls from rainwater intrusion and infiltration of outside, moisture-laden air through gaps, penetrations and cracks in the surface of the cladding material.

The best method to control this moisture is to ensure that it is effectively drained down and out of the exterior wall assembly, while also providing a means for ventilation that will allow remaining moisture vapor to decrease during drying periods. By increasing the assembly’s drainage and drying abilities, the risk of moisture related problems decreases. 

CavClear Rainscreen Mat Heavy Duty has been specifically engineered for high-performing, resilient designs that are effective in both moisture and air management by creating a capillary break between the exterior cladding and the drainage plane.

Composition and Materials
CavClear Rainscreen Mat Heavy Duty is a diamond shaped, extruded plastic netting made from high density polyethylene (HDPE). Two layers of parallel strands are overlaid at angles to create the diamond-shaped netting that provides for both horizontal and vertical air movement. Each strand is square to provide superior compressive strength to maintain the perfect shape and performance behind siding and cladding materials.

Benefits

  • Diamond-shaped mesh design with two crisscrossed layers provides both vertical drainage and horizontal ventilation to accelerate drying.
  • Creates an effective 0.2" continuous capillary break to minimize the capillary water movement into the wall system.
  • Non-compressible yet flexible even in cold weather.
  • Made from recycled materials.
  • Mold and mildew resistant.
  • Easy to install, store and ship.
  • Eliminates the need for more labor-intensive furring strip methods, however it can be used behind traditional furring strips to allow for cross ventilation of the chambers and add depth to the capillary break.
  • Easier to install and more effective than furring strip methods.
  • Compatible with other building components and all cladding and siding products.

 

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