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3. What is the largest wetting source for above grade walls:

a. Air transported moisture b. Vapor diffusion c. Liquid or bulk water infiltration d. Uncontrolled air flow

4. What is the primary function of an air barrier?

a. Water resistance b. Vapor resistance c. To prevent air leaking through porous materials d. To control air leakage

5. An additional air barrier function is:

a. Controlling air flow b. Protecting water intrusion c. Preventing mold growth d. Eliminating pollutants

6. Air barrier requirements include:

a. Ability to withstand pressure loads or be able to transfer the load b. Durability c. Continuity d. All of the above

7. An effective air barrier should have:

a. High resistance to liquid water penetration b. High resistance to air infiltration c. Optimum moisture vapor permeability d. A balance of critical properties

8. A key consideration when selecting an air barrier system for a building enclosure is:

a. Vapor transmission b. Climate c. Sustainability d. Site design

9. What type of air barrier can and should be used in all climates and all wall designs?

a. Vapor non-permeable b. Vapor permeable c. Mechanically fastened d. Self-adhered

10. Vapor non-permeable air barriers must be located:

a. On the cold side of the thermal insulation b. On the warm side of the thermal insulation c. Anywhere in the wall assembly d. None of the above

The miracles of science-

DuPont"

Tyvek

DuPont™ Tyvek® brand protective material is a family of tough durable sheet products of high-density polyethylene fibers. The sheet is formed first by spinning continuous strands of very fine interconnected fibers, and then bonding them together with heat and pressure.

Tyvek® is white, non-toxic, chemically inert and contains no binders. DuPont™ Tyvek® offers new dimensions of protection, security and safety in a wide variety of industries including protective apparel, construction, envelopes, medical packaging and graphics.

In construction DuPont™ Tyvek® is used to increase air and water resistance and provide protection against water and moisture intrusion.

YYePG Proudly Presents, Thx for Support

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Concrete Waterproofing with Crystalline Technology

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