recommends a moisture control cavity weep system to protect your stone veneer

Why include a weep system?

Veneer stone is not a structural wall, it is either adhered to the structural wall (thin veneer) or anchored to a weight bearing foundation (building veneer). Stone and mortar are porous and so water can eventually weep through these materials and cause two potential issues: damage to the substrate or efflorescence (salt from the water).

What does a weep system offer?

Cavity weep systems are designed to protect against these two problems. It consists of vertical channels and corrugated exit holes that allow moisture that does penetrate to safely exit down the wall and out through the face. There are also accessories for corners and special situations like windows and finished grade changes.

What is recommended?

Our recommended weep system is from MTI (Masonry Technology Incorporated). Their website is Below you will find several diagrams that illustrate wall cross sections for both adhered (thin) veneer and anchored (building) veneer.



For Cavity Weep Systems: We recommend MTI Moisture Control

Not all drainage planes and weep systems are created the same. MTI provides:

  • Premier Drainage Planes and Weep Systems with Research Backed, Field Proven protection against moisture, mold, and wall rot
  • Easy-to-install, durable moisture control systems
  • Detail Drawings, Animations, CAD details, more! Custom details also available
  • 100% Recycled Material in Drainage Planes
  • Customer Service second to none - they will answer questions

Masonry Technology Inc. is the only manufacturer of rainscreen drainage technology that designs, manufactures, and markets complete systems.

Contact MTI at  800-879-3348 or

Rainscreens: 5 Things You Need to Know

How to Install Thin Stone with a Rainscreen

How to Install Full Stone with a Rainscreen & Weeps

How to Install Thin Stone Run-To-Grade with a Rainscreen

How to Install Full Stone Run-to-Grade with a Rainscreen

The LATICRETE® Masonry Veneer Installation System Air & Water Barrier Alternative

LATICRETE® has developed an installation system that provides a permanent, high strength installation that is freeze/thaw stable and protected from water intrusion. Backed by either the LATRICRETE® 25 Year System Warranty or 15 Year System Warranty, the LATICRETE® Masonry Veneer Installation System (MVIS) allows for increased productivity utilizing either masonry veneer techniques or the "tile setter's" method.

LATICRETE® Air & Water Barrier is an Alternative to the Weep System

A single component, load bearing, vapor permeable, fluid applied, waterproofing, crack isolation, air barrier membrane. LATICRETE Air & Water Barrier produces a seamless, monolithic elastomeric coating and bonds directly to a wide variety of substrates. A vital component of LATICRETE Air & Water barrier comprehensive building protection system.

  • Install Adhered Masonry Veneers (AMV) in 1-2 hours
  • Designed for use as an air and water barrier behind most exterior wall cladding
  • Excellent bond strength
  • May contribute to overall building energy efficiency
  • Easy to clean up with water
  • Exceeds ICC-ES AC 212

For more information on the LATICRETE® Masonry Veneer Installation System visit the LATICRETE® Page