CFI Flooring Materials & Installation Techniques 4

Question 1

What does 'lippage' refer to in tile installation?

Accepted Answer

Vertical displacement between the edges of adjacent tiles

Answer

Lippage is the height difference at the edge between two adjacent tiles; ANSI standards limit allowable lippage based on tile size and grout joint width.

Question 2

For a glue-down LVP installation, what is the correct sequence after spreading adhesive?

Accepted Answer

Wait for adhesive to become tacky, then lay tile

Answer

Pressure-sensitive adhesives for LVP must be allowed to flash off and become tacky before planks are set, ensuring proper bond without adhesive transfer.

Question 3

Which tool is used to scribe a resilient floor covering to an irregular wall or obstacle?

Accepted Answer

Profile gauge or compass

Answer

A profile gauge (also called a scribing compass) traces the exact contour of an irregular surface so the flooring material can be cut to fit precisely.

Question 4

When installing hardwood flooring, racking the floor refers to:

Accepted Answer

Pre-laying boards in a dry run to optimize length distribution and appearance before fastening

Answer

Racking involves laying out planks in a dry-fit arrangement to ensure staggered end joints, balanced color distribution, and the best visual result before permanent installation.

Question 5

What is the minimum recommended stagger for end joints between adjacent rows of hardwood flooring?

Accepted Answer

6 inches

Answer

Most hardwood flooring manufacturers recommend a minimum 6-inch end-joint stagger between neighboring rows to avoid H-joints and ensure structural integrity.

(CFI) Certified Flooring Installer Practice Test

(CFI) Certified Flooring Installer Practice Test

CFI Flooring Materials & Installation Techniques 4