A continuous drainage area behind stone is beneficial to the long-term performance of the wall. No wall is waterproof. Wind-driven rain will find its way behind stone through penetrations, hairline fractures, cement mortar and, depending on the stone porosity, through the stone itself. Additionally, condensation can produce moisture on the backside of stone. Therefore, it is important to manage the water that will undoubtedly be part of the wall system.
Water management can be effectively achieved by providing properly designed and constructed weep holes and selecting the appropriate vapor barrier and flashing materials. However, if moisture is unable to reach this system, it will be trapped within the wall where it can damage the wall's performance and integrity. A continuous drainage area will direct moisture to the flashing and weeps where it can exit the wall.
While a continuous air space behind stone is recommended, the longstanding issue has been constructability. Professionals specializing in stone masonry will explain that it is not feasible to provide a drainage/ventilation area behind stone unless that drainage area is maintained by some material during the construction of the stone veneer. CavClear® Stone Mat provides a continuous area that will allow water to reach the flashing and weep system.
- Creates a drainage/ventilation area behind stone that would not otherwise be possible.
- Allows moisture within the wall to reach the flashing and weep holes.
- Made from 100% recycled plastic.
- Reduces life-cycle costs by reducing the maintenance and repair costs associated with moisture damage.
- Helps reduce the threat of unwanted mold and mildew in the building exterior by managing moisture within the exterior wall system.
- Treated with an antibacterial/antifungal agent to inhibit mold and mildew within the air space.
Specify, detail and install full-height in exterior stone construction to create a continuous drainage area for moisture management.
CavClear® Stone Mat is a fluid-conducting, non-absorbent polymer mesh made from 100% recycled plastic offering LEED points toward the prerequisite for minimum energy performance and the optimize energy efficiency and recycled content credits.
Sheets: 16" x 96" (406.4 x 2,438.4 mm)
Rolls: 3/8" - 4' x 100' (1.22 x 30.48 m); 1" - Rolls: Available upon request
3/8" or 1" (9.65, 25.4 mm)
No tolerance between mat and exterior wythe.
Store in a clean, dry, sheltered area off of the ground until used. Protect packaging from UV rays.
Install full-height. Fit horizontally between ties or cut to fit around ties as necessary. If desired, use spot adhesive that is compatible with the substrate. Stagger end joints in adjacent rows. Do not use staples or nails.
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