CavClear® Masonry Mat

CavClear Masonry Mat is installed full-height behind brick to provide a continuous drainage area for moisture management. A properly functioning drainage system is the prerequisite for a masonry design to achieve maximum thermal efficiencies and reduced maintenance and repair costs.

CavClear Masonry Mat not only protects the weeps in a masonry design, it also addresses mortar obstructions throughout the height of the air space. Mortar bridges are problematic anywhere in the wall, not just at the flashing levels.

Mortar obstructions and droppings which impede drainage are completely prevented by installing full-height protection using CavClear Masonry Mat.

Features and Benefits

  • Made from 100% recycled plastic.
  • Completely prevents mortar bridges throughout the entire air space.
  • Eliminates weep obstructions and ensures a continuous drainage path.
  • Prevents moisture intrusion and moisture-related failures.
  • Prevents mortar bridges, minimizing thermal and moisture transfers between the wythes.
  • Reduces long-term life-cycle costs by maximizing thermal efficiencies and reducing maintenance and repair.
  • Assures proper drainage even when a smaller-than-desired cavity width is necessary due to project requirements.
  • LEED rated to provide credits to sustainable designs.

Composition and Materials

CavClear Masonry Mat is a fluid-conducting, non-absorbent polymer mesh manufactured from 100% recycled plastic. It offers LEED points toward the prerequisite for minimum energy performance and the optimize energy efficiency and recycled content credits.


Specify, detail and install full-height behind brick in masonry veneer and cavity walls systems (insulated or non-insulated).


Fit horizontally between ties. Secure loosely using pintels at top edge or use spot adhesive that is compatible with the substrate. Stagger end joints in adjacent rows. Do not use staples or nails.

Storage and Handling

Store in a clean, dry, sheltered area off of the ground until used. Protect packaging from UV rays.


3/8″, 1/2″, 3/4″, 1″, 1-1/4″, 1-3/4″ (12.7, 19.05, 25.4, 31.75, 44.45 mm)
Allow 1/4″ to 3/8″ tolerance between CavClear Masonry Mat and brick.


Sheets: 16″ x 96″ (406.4 x 2,438.4 mm)
Rolls: Up to 4′ x 70′ (1.22 x 21.34 m) available upon request



Please click on the following link to download the Cut Sheet for the CavClear® Masonry Mat.

Masonry Mat Cut Sheet

Please click on the following link to download the Guide Specifications for our Masonry Mat:

Masonry Mat – Weep Vents Guide Specs

Please click on the following link to download the Installation Instructions for our Masonry Mat:

Masonry Mat Installation Instructions

Please click on the following link to be taken to a listing of all available CAD Drawings:

CAD Drawings

Do you have something you’d like us to review? If so, please complete our Submission Form.
Please click on the following link to download our LEED Credit Information Sheet:

LEED Credit Information