CFI Surface Preparation & Safety Procedures 5

Question 1

When using a kneeboard while installing flooring, its primary safety and ergonomic purpose is to:

Accepted Answer

Distribute the installer's weight and protect knee joints

Answer

Kneeboards redistribute body weight over a larger area, reducing pressure on joints and preventing repetitive stress injuries.

Question 2

A concrete slab shows a map-cracking pattern across its entire surface. Before installing flooring, the installer should:

Accepted Answer

Evaluate crack depth and stability, then repair with appropriate filler or overlay

Answer

Map cracking must be assessed for depth and movement; active cracks require a flexible repair while stable cracks can use rigid filler.

Question 3

What is the minimum recommended acclimation period for solid hardwood flooring in a climate-controlled environment?

Accepted Answer

3–5 days

Answer

NWFA recommends acclimating solid hardwood for a minimum of 3–5 days, or until it reaches equilibrium with the site's temperature and humidity.

Question 4

Which test method measures the in situ relative humidity of a concrete slab using probes embedded in drilled holes?

Accepted Answer

In situ relative humidity probe (ASTM F2170)

Answer

ASTM F2170 uses probes inserted at 40% slab depth to measure internal RH, providing more accurate moisture data than surface tests.

Question 5

When installing flooring in a commercial space with an occupied adjacent area, which safety practice is mandatory?

Accepted Answer

Post warning signs and barricade the work zone

Answer

OSHA and common safety practice require physical barricades and posted warning signs to protect non-workers from job site hazards.

(CFI) Certified Flooring Installer Practice Test