Hardwood Flooring February March 2018

CHECK YOUR KNOWLEDGE RESOURCES

1. If a concrete subfloor does not meet flatness requirements, you should do which of the following? A. Grind subfloor flat

B. Fill low area with approved patching C. Use a self-leveling concrete product D. All of the above

2. When installing a plywood subfloor, what gap do you leave between sheets?

A. 1/2” B. 3/4” C. 1/8” D. 5/16”

3. Tolerance for wood subfloors using nail- down system should be flat to within which measurement?

A. 1/4” in 10’ or 3/16” in 6’ B. 5/16” in 12’ or 1/8” in 6’ C. 1/8” in 10’ D. 1/8” in 12’ or 3/16” in 6’

4. What does KDAT stand for? A. Kilo down after treatment

B. Kinetically dried after treatment C. Kiln dried after treatment D. Keep dry after treatment

HOW DID YOU DO? See suggested NWFA University learning path on page 71. Answer key is on page 82.

5. When nailing down a plywood subfloor, which statement is not accurate? A. Fasteners must be 2” from the edge and every 8”-10” along the perimeter B. Use 5/8” nominal CDX plywood C. Allow 3/4” expansion at all vertical obstructions D. Allow 1/8” expansion between all panels

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