USER GUIDE
28
WOOD FLOORING
Excess moisture in wood flooring can cause major
problems. For instance, if installed with excess moisture,
the wood can subsequently shrink, leading to job failure.
If a wood floor (solid or engineered) is installed above wet
concrete the wood can absorb moisture emitting from the
concrete, causing the wood to swell and buckle and even
cause structural damage to the building.
Your CMEXpert II is used to measure the moisture
conditions in the concrete and when in Pin Probe mode
can be used to measure the moisture content of the wood
floor to ensure it meets specification.
Testing wood and wood products
a. When testing wood, power-on, insert wood probe
into phono-socket at the top of the CMEXpert II and
select Pin Probe Mode using the key.
b. When a wood probe is inserted the moisture content
(MC) in percent is shown on the right-hand side of
the bottom line of the display.
c. If possible, always take readings with the pins
parallel to the direction of the wood grain.
d. Calibration tests are based on Douglas fir, which has
a published specific gravity (SG) of 0.50.
e. Acceptable levels of moisture content depend on
climatic conditions and we advise you check the
levels acceptable in your area. The Table on page
31 shows the approximate relationship between the
ambient relative humidity and equilibrium moisture
content in woods.
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