Cultured Stone
EZ Scaffold Corp.
EZG Manufacturing
Federated Insurance
Fraco USA, Inc.
Hydro Mobile, Inc.
Kennison Forest Products, Inc.
Mortar Net Solutions
Non-Stop Scaffolding
Norton Clipper
Southwest Scaffolding
The Belden Brick Company
Xtreme Manufacturing
Find-a-Contractor Masonry Buyer's Guide

Water-Resistive Barrier

Function & Code Requirements

Water resistive barriers are not required over concrete or masonry walls. Water resistive barriers are required over stud wall construction. As per of the 2006 Building Code Requirements and Specification for Masonry Structures ( reported by the Masonry Standards Joint Committee (MSJC) “design and detail the backing system of exterior veneer to resist water penetration. Exterior sheathing shall be covered with a water-resistant membrane, unless the sheathing is water resistant and the joints are sealed.” Chapter 1404.2 of the 2006 International Building Code requires that a minimum of one layer of No.15 asphalt felt or other approved material shall be attached to the studs or sheathing so as to provide a continuous water resistive barrier behind the exterior wall veneer. Felt paper is commonly applied over exterior sheathing on wood or metal stud construction.

The International Building Code and International Residential Code typically requires that subgrade walls be dampproofed for conditions where hydrostatic pressure will not occur, and waterproofed where hydrostatic pressures may exist. Waterproofing systems include but are not limited to 2- or 3-ply hot-mopped felts, 50 mil rubberized asphalt, 40 mil polyurethane rubber, 20 mil vulcanized rubber, and 20 mil thermoplastic sheets. The barrier is part of a comprehensive system, which includes proper wall construction and the installation of drains, gutters, and proper grading.

Companies Offering Air Barriers

Company City State
MCAA Member Mortar Net Solutions Portage IN
MCAA Member PROSOCO, Inc. Lawrence KS
MCAA Member Advanced Building Products, Inc. Sanford ME
MCAA Member Hohmann and Barnard, Inc. Hauppauge NY
MCAA Member Crown Masonry & Construction Materials, LLC Kansas City KS
MCAA Member Ernest Maier, Inc. Bladensburg MD
MCAA Member MASONPRO, Inc. Northville MI
MCAA Member Masonry Accessories, Inc. Orlando FL
MCAA Member Thompson Building Materials, Inc. San Diego CA
MCAA Member Tucker-Kirby Co. Charlotte NC
MCAA Member Waldo Bros. Company Boston MA

“The opportunity to ‘talk shop’ with other mason contractors is extremely valuable.”

Joe Bonifate
Arch Masonry & Restoration
MCAA member since 2012

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