CFI Vinyl & Resilient Flooring 3

Question 1

What tool is used to measure the moisture vapor emission rate (MVER) of a concrete slab for resilient flooring installation?

Accepted Answer

Calcium chloride test kit

Answer

The ASTM F1869 calcium chloride test kit measures MVER in pounds of moisture per 1,000 sq ft per 24 hours.

Question 2

When installing vinyl composition tile (VCT) in a large open area, where should the installer begin laying tiles?

Accepted Answer

From the center of the room working outward

Answer

Starting from the room's center ensures balanced border tiles on all sides for a professional, symmetrical appearance.

Question 3

Which of the following is NOT an acceptable subfloor for glue-down LVP installation?

Accepted Answer

Existing single-layer vinyl

Answer

Glue-down LVP should not be installed over existing resilient flooring because the old surface can flex, fail, or contain asbestos.

Question 4

What is 'telegraphing' in the context of resilient flooring?

Accepted Answer

Subfloor imperfections that show through the finished floor surface

Answer

Telegraphing occurs when subfloor irregularities such as fastener heads, joints, or ridges are visible through the resilient flooring.

Question 5

When heat-welding seams in commercial sheet vinyl, what is the correct sequence?

Accepted Answer

Route, weld, trim flush

Answer

The seam is first routed to create a uniform groove, then filled with welding rod, then the excess is trimmed flush in two passes.

(CFI) Certified Flooring Installer Practice Test