This spring, Chicago has had a damp and cooler than normal period. Our office has had several calls related to moisture penetration. The cause for moisture penetrating the walls of our masonry structures may lie in the flashing and weeps.
By Gary Porter
Recently an architect called me for masonry advice on a flashing end dam and how effective these are. He asked “do we really need them for this project”? The purpose of the end dam is to divert the water that is collected by the flashing to where the flashing ends, and the end dam diverts the water out of the wall via a weep.
Press Releases – Product News from Mortar Net 2016
Mortar-Net-Solutions-Quick-Tips-Videos – July 2016 – Mortar Net Solutions™, the leading supplier of moisture management solutions for masonry walls, introduced “Quick Tips,” a series of instructional videos to help masons and craftsmen be more productive.
TotalFlash-Flashing-System – June 2016 – Mortar Net Solutions, the leading supplier of innovative moisture management solutions for masonry walls, provides customers with a total flashing system for masonry cavity walls.
Mortar-Net-Solutions-Product-Installation-Video-Series – April 2016 – Mortar Net Solutions™, the leading supplier of moisture management solutions for masonry walls, offers a series of helpful “how-to” videos to assist in installing its products.
Introducing-LathNet-for-Adhered-Masonry – March 2016 – Mortar Net Solutions, the leading supplier of moisture management solutions for masonry walls, introduced its LathNet™ drainage plane and metal lath system for use with thin brick, stone, stucco, and other types of adhered masonry. Using tried-and-true materials familiar to all adhered masonry installers, the system provides a faster, easier installation method than installing lath and drainage mesh separately.
Introducing-0-4-WallDefender – October 2015 – Mortar Net Solutions, the leading supplier of innovative moisture management solutions for masonry walls, introduced a new, 0.4-inch-thick size to its WallDefender™ line, the lowest cost mortar dropping collection devices available.
Flashing…Tying The Loose Ends
One of our most popular documents outlining proper flashing installation procedures.
Flashed Loadbearing Walls
Learn from this example of a flashing strategy for load bearing walls.
Is Flashing Dangerous Without a Drip?
This article focuses on flashings for shelf angles and at lintels. These two areas are similar in that, whether or not drips are required, water must not be allowed to re-enter the wall below the flashing.
FROM THE EDGE- Flashing should be exposed with a drip edge, as shown below. This is discussed and shown in BIA Technical. This flashing is also shown exposed in the AIA’s, Architectural Graphic Standard, 9th Edition. If that is not enough to convince you to show the drip-edge exposed in your building, the forensic engineer hired by your E & O insurance carrier will also say that the drip edge should have been called out, shown, and exposed on your drawing.
The most common masonry wall system in residential construction is brick veneer. All brick veneer walls are drainage walls. Their design should be based on the premise that water is going to enter into the wall system. Therefore, to ensure the wall’s successful performance, the wall design must incorporate a means for water egress.
A System Approach to the Design and Execution of Masonry Cavity and Veneer Wall Systems.
Comprehensive design guide for masonry wall systems. Shows suggested details for anchorage, moisture resistance and movement control for several common masonry systems.