CHAPTER 4 - Air Barrier System Materials

Properly sealing joints, cracks, gaps, holes, and penetrations is just as important to the performance of the air barrier as are the materials themselves.

• TRUE

• FALSE

When installing building wrap, the fasteners approved by one manufacturer may not be approved by another manufacturer.

• FALSE

• TRUE

Building wrap tape should be applied so that no ​ (a)   occur in the tape or the building wrap during application.

• bubbles or wrinkles
• skids or snares
• rips or hives
• tears or staples

Which of the following is a prefabricated sheet consisting of rubber-modified asphalt and a polyethylene carrier?

• building wrap

• self-adhered membrane

• liquid-applied air sealant product

• mastic

A liquid-applied membrane can span gaps up to ¹/₂˝ before extra material is needed.

• TRUE

• FALSE

Which of the following is a two-component, nonallergenic, high-performance, latex-based foam used to seal cracks, seams, joints, and penetrations in a building envelope?

• building wrap

• self-adhered membrane

• liquid-applied air sealant product

• mastic

Many of the chemicals used in spray foams will irritate the skin, eyes, and mucous membranes.

• TRUE

• FALSE

With spray foams, once skin or respiratory sensitization has occurred, it is likely the worker may never be able to work with spray foams again.

• TRUE

• FALSE

With two-component, high-density spray foam, the chemicals used to create the sealant are already mixed inside the can.

• FALSE

• TRUE

The percent of expansion for one-component spray foam can range from ​ (a)   percent to ​ (b)   percent of its original thickness when applied.

• 10
• 100
• 5
• 50
• 25
• 70
• 80