Masonry Veneer Manufacturers Association «2025-2026»
Manufacturers complying with MVMA standards generally ensure their products meet or exceed: Often above 1800 psi. Water Absorption: Must be managed to prevent damage.
Products should meet ICC-ES Acceptance Criteria 275 (AC275). masonry veneer manufacturers association
A weep screed with a minimum vertical attachment flange of 3.5 inches is required at the base of the wall to drain moisture. This should be placed at least 4 inches above earth or 2 inches above paved surfaces. Lath Requirements: Self-furred metal lath (minimum 2.5 lb/ yd2y d squared A weep screed with a minimum vertical attachment flange of 3
The MVMA guidelines are designed to prevent moisture intrusion and ensure long-term structural integrity. A space must be created behind the mortar
A space must be created behind the mortar scratch coat to allow for drainage.
A two-layer system is required over wood sheathing. The inner layer acts as the primary barrier, while the outer layer acts as a sacrificial layer and drainage plane. These must be applied in shingle fashion, lapped at least 2 inches horizontally and 6 inches vertically.
Proper ground clearance and flashing are essential at all intersections to prevent damage, such as from efflorescence. Best Practices & Innovations
