Masonry Magazine December 2011 Page. 24
WATERPROOFING
The third section, the weather-resistant surface, can be a waterproofing product (usually a sprayed or rolled on chemical compound) or a weather-resistant material (two layers of construction paper or a building wrap). It also can be both.
The final section, the structural wall, can be composed of a variety of materials, including wood or steel studs, CMUs or poured concrete.
In most cases, a requirement for insulation exists. It comes in many forms and can be placed in various locations in this detail. It is an extremely important and complicated character in the hole/whole story, and must be included in the moisture-management equation. (See Figure 3.) All forms of insulation involve unique moisture-management issues beyond the scope of this article. However, they must be seriously examined when constructing a moisture-management plan for the rainscreen building envelope.
Sustainable building and moisture management
SUSTAINABLE BUILDING isn't possible without moisture management. For those forced to live or work in a building without it, life becomes a health and safety nightmare. These are bold, but totally supportable, statements.
View of rutted WRB, OSB and wood products, due to extrapped moisture
Water Repellents
Dirt layered on exposed masonry surfaces retains water and that encourages deterioration. Freezing and thawing, acid rain, stains and chemical reactions break down masonry surfaces. Stop the disintegration with Diedrich water repellent products that also reduce bonding of airborne dirt and hydrocarbons. These products keep the building structure intact to protect your investment.
* 303WB (Water Based) Siloxane
* 303-S Silox Seal (Siloxane) Water Repellent
* Salt-Bloc Chloride Barrier Sealer
* Salt-Bloc Chloride Barrier Sealer - WB (Water Based)
* 333 Omegaseal - Water Repellent & Anti-Graffiti System