CONCRETE MOISTURE ENCOUNTER X5 USER GUIDE
16
Drying time for concrete floors and screeds
Concrete floors and screeds must be allowed to dry
to an adequate level before the installation of sheet
material, tile, wood or coating. Manufacturers of such
systems generally require moisture testing to be
performed before installation on a floor slab. Moisture
content measurement is one such method. Excessive
moisture in or permeating from a floor covering or
coating can cause failures such as condensation,
blistering, delaminating, movement and general
deterioration of the finished flooring/coating.
There is also a risk of promoting microbial growth. No
exact period can be specified for the drying of such
floors to reach acceptable moisture content, as this
is affected by temperature and humidity within the
building as well as concrete curing times and other
factors. Typically a period of 1 month per inch (25mm)
depth of concrete or sand/cement screed is often
quoted. Longer periods may be required in areas of high
humidity or low temperature.
During the drying period and prior to applying the
floor covering, the floor should be regularly checked to
monitor moisture content.
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