WLFI Inspection Procedures & Problem Diagnosis 2

Question 1

During a wood floor inspection, you notice cupping on boards near an exterior wall. What is the most likely cause?

Accepted Answer

Moisture infiltrating from the exterior or crawl space below

Answer

Cupping near exterior walls typically indicates moisture intrusion from the outside environment or a wet crawl space beneath the floor.

Question 2

An inspector finds laminate flooring with edge swelling along the perimeter of a room. Which condition is most likely responsible?

Accepted Answer

Insufficient expansion gap at the walls

Answer

Edge swelling at the perimeter indicates the flooring had no room to expand and is pressing against the wall, causing the edges to lift.

Question 3

Which tool is most appropriate for measuring the moisture content of a concrete subfloor before installing hardwood?

Accepted Answer

Relative humidity test (in-situ probe)

Answer

In-situ relative humidity testing per ASTM F2170 is the industry-standard method for measuring moisture in concrete subfloors.

Question 4

A homeowner reports that their solid hardwood floor squeaks only in winter. What is the MOST probable cause?

Accepted Answer

Seasonal shrinkage creating gaps where boards rub on fasteners

Answer

In dry winter conditions, wood shrinks and boards can move against nails or adjacent boards, producing squeaks.

Question 5

When inspecting a laminate floor installation over radiant heat, an inspector should primarily verify that the:

Accepted Answer

Manufacturer's maximum floor temperature specification was not exceeded

Answer

Excess radiant heat can warp, delaminate, or buckle laminate flooring, so the manufacturer's maximum temperature limit is the critical compliance check.

(WLFI) Wood and Laminate Flooring Inspector Practice Test

(WLFI) Wood and Laminate Flooring Inspector Practice Test

WLFI Inspection Procedures & Problem Diagnosis 2