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Questions and Answers
What is the purpose of bonding rigid insulation to the wall with cement grout or synthetic adhesive in a grid pattern?
What is the purpose of bonding rigid insulation to the wall with cement grout or synthetic adhesive in a grid pattern?
- To ensure a strong mechanical bond between the insulation and the wall
- To limit warm moist air movement behind the insulation and prevent condensation (correct)
- To provide additional structural support to the wall
- To improve the fire rating of the insulation
What is the recommended thickness of the expanded polystyrene insulation in the concrete wall assembly?
What is the recommended thickness of the expanded polystyrene insulation in the concrete wall assembly?
- 25 mm (1 in.) (correct)
- 76 mm (3 in.)
- 12.7 mm (1/2 in.)
- 50 mm (2 in.)
Why is it necessary to cover polystyrene insulation on the inside of a house with an acceptable finish?
Why is it necessary to cover polystyrene insulation on the inside of a house with an acceptable finish?
- For aesthetic reasons
- For fire safety reasons (correct)
- To provide additional thermal insulation
- To reduce the risk of mold growth
What should be done to the stud cavity in preserved wood foundations?
What should be done to the stud cavity in preserved wood foundations?
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What is the purpose of sealing the rigid insulation around the board perimeters?
What is the purpose of sealing the rigid insulation around the board perimeters?
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