CFI Vinyl & Resilient Flooring 2

Question 1

What is the minimum recommended acclimation time for luxury vinyl plank (LVP) before installation in most US climates?

Accepted Answer

48 hours

Answer

LVP should acclimate for at least 48 hours in the installation environment to stabilize its dimensions.

Question 2

When installing sheet vinyl over a wood subfloor with seams, what is the maximum allowable height difference at the seam?

Accepted Answer

1/32 inch

Answer

Subfloor seams must be within 1/32 inch (0.8 mm) to prevent telegraphing through resilient flooring.

Question 3

Which adhesive spread rate issue can cause vinyl tiles to peak or tent after installation?

Accepted Answer

Adhesive applied too thick

Answer

Excessive adhesive thickness traps solvents and can cause the tile edges to lift or tent as the adhesive off-gasses.

Question 4

What type of primer is typically required before applying pressure-sensitive adhesive over a highly porous concrete subfloor?

Accepted Answer

Latex sealer or primer

Answer

A latex sealer or primer reduces porosity so the adhesive bonds uniformly rather than being absorbed into the concrete.

Question 5

When cutting luxury vinyl plank with a score-and-snap method, on which side of the plank do you score?

Accepted Answer

The wear layer (top) side

Answer

Scoring the wear layer (top surface) and snapping downward produces a clean, controlled break.

(CFI) Certified Flooring Installer Practice Test