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Masonry supplies Cincinnati

Mortar Net Weep Vent


Mortar Net Weep Vent SDS PDF

Mortar Net Weep Vent for masonry cavity walls helps ensure that moisture can migrate out and air can circulate into the cavity, and that insects can’t enter the cavity through the weep holes.  The product’s compressibility means it can completely fill the weep holes, and “prickly adhesion” holds the WeepVent in place without fasteners or adhesives.

Mortar Net Weep Vent Features

  • 90% open-weave polyester mesh
  • Available in Brown, Tan, Red, Almond, White, Gray, Black, and Pebble (New)
  • Custom sizes and cuts available on request
  • Sold in easy-tear-off sheets for easy handling on the job
Available in Brown, Tan, Red, Almond, White, Gray, Black, and Pebble


  • Very cost-effective
  • 8 different color choices match common mortar colors, eliminate the appearance of dark weep holes and provide a finished look to any building design
  • Standard size WeepVent may be used with both standard and utility bricks
  • Help prevent spalling from freeze/thaw cycles, efflorescence, and wet basements by:
    • Allowing moisture to migrate out of the cavity so moisture can’t build-up
    • Allowing air to circulate into the cavity so the cavity can dry quickly
    • Helping prevent pressure differentials, so moisture is not forced into the cavity
    • Preventing insects and debris from entering the cavity and blocking the weep holes
  • Very lightweight and easy to handle
  • Snug, permanent fit without adhesives or fasteners
  • Fast and easy to install in both new construction and restoration projects
  • Can be used at the top of the wall to help improve air circulation in the cavity
  • Will not degrade, oxidize, or react with common building materials, and is treated with a flame-retardant (see test data)
  • 100% compatible with standard weep hole designs
  • Helps prevent call-backs and repairs due to moisture damage in the cavity
  • Helps protect builders and designers from legal issues resulting from moisture damage
  • Clear instructions, extensive product support, and high-quality materials help assure installations to specs
  • White, Almond, Tan, and Grey WeepVent contain ultraviolet (UV) stabilizers to resist sun damage

WeepVent is most effective when installed in combination with MortarNetHouseNet, LathNet or WallNet. Click on each name to learn more.



Check out other Mortar Net products here.

Additional information

Weight25 lbs
Dimensions16 × 16 × 16 in

Almond, brown, Pebble, Red, Black, Gray, Tan, White


Jumbo, Standard