UZIN_LVT_Brochure

SUBFLOOR
PREPARATION ADVICE
MOISTURE MEASURING & SUPPRESSING
Above all it is excess moisture which causes the most problems and its
management is key to any successful installation. There are various methods
to test moisture but the British Standards recommend a drill and plug or surface
box hygrometer test. When installing LVT the moisture reading must be less
than 75% relative humidity, above this and a moisture suppressing system from
the UZIN range will be needed. It is also important to ascertain if a structural
damp proof membrane is present and whether the moisture is caused from rising
damp or residual moisture within the screed. UZIN PE 480 DPM provides the
highest protection for both situations and can be used up to 99.9% RH.
LEVELS & SURFACE REGULARITIES
A floor should remain level and smooth with no readily visible fluctuations in
depth or surface abnormalities. The British Standards specify a “surface
regularity” (SR1, 2, 3) which is a measurement of smoothness, but not level.
Applying a UZIN smoothing compound can help achieved the desired result,
as well as good working practice and trowel skills. Using spike rollers once the
smoothing compound has been applied will aerate the compound and help
reduce the incidence of pinholes and improve the aesthetics. Making sure the
surface is level can be aided through the use of level pins to ensure that uneven
depths are clearly identified.
ADHESIVE CHOICE AND LVT APPLICATION
Refer to the LVT manufactures guidelines in regards to acclimatisation and
conditions for installation. There are various UZIN adhesives which can be
used to install luxury vinyl tiles. Each UZIN adhesive should be used depending
on the area the luxury vinyl tiles are being installed for example, UZIN KE 68
adhesive should be used in any areas with high solar gain, temperature
fluctuations or subject to frequent wet cleaning. Once the correct adhesive has
been selected then there are other important factors such as choosing the correct
notch size, spreading an even coat at a 60° angle and ensuring the LVT is
installed within the adhesives working time. To help provide a secure bond it is
also critical that there is sufficient transfer of adhesive on to the underside of the
LVT. Remove any air pockets once the LVT has been installed using a cork board
or pressure roller and then roll over twice with a 68 kg roller, first end to end and
then across. Specialist LVT tools from Wolff can be used to aid installation such
as a hole cutter.
UZIN are pleased to provide help and support regarding subfloor preparation
and LVT installations. Alternatively visit www.uzin.co.uk for more information.
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