Introduction to Substrate and
Subfloor Inspection
FULL TEST GUIDE
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,1. What is the primary purpose of a substrate in flooring systems?
a) Aesthetic enhancement
b) Structural support
c) Insulation provision
d) Moisture barrier
Correct Answer: b) Structural support
2. Which of the following is a common sign of subfloor moisture
issues?
a) Discoloration
b) Increased hardness
c) Squeaking noises
d) Temperature fluctuations
Correct Answer: a) Discoloration
3. In the context of ISSI, what does the term 'efflorescence' refer
to?
a) A type of flooring adhesive
b) The crystalline deposit on surfaces of masonry or concrete
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, c) A method of polishing concrete
d) A grading system for subfloors
Correct Answer: b) The crystalline deposit on surfaces of
masonry or concrete
4. What is the recommended moisture content level for wood
subflooring before the installation of flooring materials?
a) 6-9%
b) 12-15%
c) 20-25%
d) Below 5%
Correct Answer: a) 6-9%
5. Which tool is essential for measuring the flatness of a subfloor?
a) Moisture meter
b) Straightedge
c) Hammer
d) Thermometer
Correct Answer: b) Straightedge
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