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Advanced Building Products 1" x 50' Cavity Mortar Break

Brand: Advanced Building Products Mfg#: MB10
Product#: 379MB150
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The Mortar Break® mortar deflection mat works in conjunction with our masonry flashing and weep vents as a complete and effective moisture management sytem. Mortar Break® is designed to prevent mortar droppings from blocking and clogging base wall and head joint drainage channels for 1” (25mm) masonry cavity wall applications. Mortar Break® suspends excess mortar droppings above the weep holes and allows any water trapped within the cavity to seep down the flashing and out of the wall. The system also helps to maintain an airspace for ventilation and drying of the wall cavity.


  • Able to withstand extreme temperatures
  • Greater airflow compared to most plastic mesh based products
  • Available in 10 in, 13 in, 16 in and 39 in standard widths (20 in wide rolls available per request)
  • Made from 40% recycled content, contributes to LEED points
  • Lightweight & easy to install. No mechanical fastening required
  • Polypropylene matrix deflects and suspends mortar droppings allowing moisture to drain from the wall assembly
  • Anti-wicking material promotes enhanced drainage performance
  • Dimple design helps break up mortar droppings


  • Brand: Advanced Building Products
  • Material: Polypropylene
  • Depth: .8 in
  • Length: 50
  • Width: 10 in
  • Special Features: 1 in Masonry Cavity Wall
  • Usage: For All Cavity Wall Flashing Locations Including Base of the Wall, Above Windows and Doors, Steel Lintels, Spandrels and Shelf Angles, or any Other Penetrations or Obstructions