WLFI Tools, Equipment & Safety Standards

Question 1

Which instrument is the industry standard for measuring the moisture content of hardwood flooring planks during an inspection?

Accepted Answer

Pin-type or pinless moisture meter

Answer

Pin-type and pinless moisture meters are the standard tools used to measure moisture content in wood flooring, with each type suited to different inspection scenarios.

Question 2

When using a pin-type moisture meter on hardwood flooring, what correction factor must typically be applied?

Accepted Answer

Species correction factor

Answer

Pin-type moisture meters are calibrated for Douglas fir by default, so a species correction factor must be applied to get accurate readings for other wood species.

Question 3

A flooring inspector uses a calcium chloride test kit. What does this test measure?

Accepted Answer

Moisture vapor emission rate (MVER) from concrete

Answer

The calcium chloride test (ASTM F1869) measures the moisture vapor emission rate from concrete slabs, expressed in pounds per 1,000 sq ft per 24 hours.

Question 4

Which ASTM standard governs the in-situ probe (RH probe) method for testing concrete slab moisture?

Accepted Answer

ASTM F2170

Answer

ASTM F2170 covers the standard test method for determining relative humidity in concrete floor slabs using in-situ probes.

Question 5

What personal protective equipment (PPE) is most critical when a flooring inspector is assessing a jobsite where adhesive fumes are present?

Accepted Answer

Chemical-resistant gloves and organic vapor respirator

Answer

Chemical-resistant gloves and an organic vapor respirator protect against skin absorption and inhalation of volatile organic compounds (VOCs) from flooring adhesives.

(WLFI) Wood and Laminate Flooring Inspector Practice Test

(WLFI) Wood and Laminate Flooring Inspector Practice Test

WLFI Tools, Equipment & Safety Standards