CFI Flooring Materials & Installation Techniques 2

Question 1

What is the minimum recommended acclimation time for solid hardwood flooring in most residential installations?

Accepted Answer

3–5 days

Answer

Solid hardwood should acclimate for at least 3–5 days in the installation environment to equalize moisture content.

Question 2

Which underlayment type provides the best sound reduction for floating LVP installations over concrete?

Accepted Answer

Cork or foam composite with IIC rating

Answer

Cork or foam composite underlayments with a high IIC (Impact Insulation Class) rating provide the best sound attenuation for floating LVP over concrete.

Question 3

When installing ceramic tile using the thin-set method, the back-buttering technique is used to:

Accepted Answer

Ensure full coverage on large-format or porous tiles

Answer

Back-buttering applies thin-set directly to the tile back to achieve the required 95% mortar coverage for wet areas or large-format tiles.

Question 4

The maximum allowable moisture vapor emission rate (MVER) for most resilient flooring adhesive installations over concrete is:

Accepted Answer

3 lbs/1,000 sq ft/24 hrs

Answer

Most resilient flooring adhesive manufacturers specify a maximum MVER of 3 lbs per 1,000 sq ft per 24 hours as measured by the calcium chloride test.

Question 5

Which type of trowel notch produces the highest ridges for maximum adhesive coverage with sheet vinyl?

Accepted Answer

Square-notch

Answer

Square-notch trowels produce the fullest, highest ridges, delivering maximum adhesive coverage for sheet vinyl and resilient tile.

(CFI) Certified Flooring Installer Practice Test

(CFI) Certified Flooring Installer Practice Test

CFI Flooring Materials & Installation Techniques 2