Installation Instructions

11
6.2 Relative Humidity (RH) Testing
Testing for internal relative humidity of concrete slabs must be conducted in
accordance with the current version of ASTM F-2170, not to exceed manufacturer’s
requirements (ASTM F2170 - Standard Test Method for Determining Relative
Humidity in Concrete Floor Slabs Using In-Situ Probes).
6.3 Testing for Alkalinity
Testing the pH at the surface of a concrete slab must be conducted in accordance
with the current version of ASTM F710, not to exceed manufacturer’s requirements
(ASTM F710 - Standard Practice for Preparing Concrete Floors to Receive Resilient
Flooring).
NOTE: Preparing the surface of a concrete slab for pH testing can be
problematical. Make sure the concrete surface is adequately cleaned of
adhesives, curing compounds etc. When pH readings are less than 7, it
may be an indication of a residue remaining on the concrete surface.
Also use care not to over clean the surface of the concrete, consequently
removing the (usually) thin layer of carbonation. This can result in pH
readings >12.
7.0 Site Conditions
7.1 Substrate Conditions
Proper site conditions as outlined in this section are essential for a successful
installation and any deviation often results in an installation failure and may void
manufacturers’ warranties.
7.2 Ambient Temperature and Humidity Suitable Substrates
The installation is not to begin until the HVAC system is operational and the
following conditions are maintained for at least 48 hours before, during and 72
hours after completion. The carpet is to be installed when the indoor temperature
is 65-95 F (18-35º C) with a maximum relative humidity of 65%. The substrate
surface temperature should not be less than 65 F (18 C) at time of installation. Do
not allow the temperature of indoor carpeted areas to fall below 50
o
F (10
o
C),
regardless of the age of the installation. If these conditions are not attainable,
contact the flooring manufacturer for warranty implications.
NOTE: If the above conditions are not met, installations may be
susceptible to moisture related failures including but not limited to
dew point condensation.