CFI Quality Control & Maintenance Practices 2

Question 1

When performing a moisture test on a concrete slab before resilient flooring installation, what is the maximum acceptable moisture vapor emission rate (MVER)?

Accepted Answer

5 lbs/1000 sq ft/24 hrs

Answer

The industry standard maximum MVER for most resilient flooring installations is 5 lbs per 1000 sq ft per 24 hours using the calcium chloride test.

Question 2

A newly installed hardwood floor shows cupping two weeks after installation. What is the most likely cause?

Accepted Answer

Excessive moisture from below or high humidity

Answer

Cupping in hardwood floors is caused by the bottom of the board absorbing more moisture than the top, causing the edges to rise.

Question 3

Which instrument is used to measure the flatness of a subfloor before installation?

Accepted Answer

Straightedge and wedge gauge

Answer

A straightedge (typically 10 feet) combined with a wedge gauge is the standard method to measure subfloor flatness and identify high or low spots.

Question 4

What is the standard subfloor flatness tolerance for most resilient and ceramic tile installations?

Accepted Answer

1/8 inch in 10 feet

Answer

Most resilient and ceramic tile manufacturers require no more than 3/16 inch variation in 10 feet, but the tighter standard is 1/8 inch in 10 feet for many products.

Question 5

During a quality inspection of a carpet installation, you notice peaked seams. What is the most likely cause?

Accepted Answer

Over-stretching the carpet

Answer

Peaked seams are caused by over-stretching the carpet, which forces the seam edges upward and creates a ridge.

(CFI) Certified Flooring Installer Practice Test

(CFI) Certified Flooring Installer Practice Test

CFI Quality Control & Maintenance Practices 2