Mortar Belt™

Prevents Mortar Build-Up in CMU Walls

MB 3550
Product made with a minimum 94% post industrial recycled plastic Made with a minimum 94% Post-Industrial Recycled Plastic

Mortar Belt™ Installation

  • Roll out Mortar Belt™ and center on block wall
  • Hold in place with a cross web of mortar or a dry masonry unit
  • Center on wall every 4 to 6 courses
  • Caution – Mortar Belt™ should not be used when masonry unit cells are less than 5”

Ordering & Shipping

Contact MTI at 1-800-879-3348 for specific cost to your destination.

Mortar Belt™ Specifications


MB3550 is a 0.024″ (0.6 mm) thick high impact polystyrene strip formed with 3/16″ (4.8 mm) deep corrugations; 3 3/8″ wide, 50′-0″ (15 m) long continuous belt. System shall be designed to suspend and trap trash mortar occurring within the cells of CMU.

Product Number
MB 3550
Roll Length (Feet)
Rolls Per Bundle
Linear Feet per Bundle
Bundles Per Box
Linear Feet per Box
Boxes per Pallet
Linear Feet per Pallet
Pallet Size

Documents, Specs, Details & More

10mm Sure Cavity®

 SCMM 2516, SCMM2532 

Core Cavity Weep™

 CCV 5020