COMMERCIAL
FLOORING
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Recommendations for installation
Armstrong DLW Linoleum is manufactured from
natural and replaceable raw materials. These pro-
vide linoleum with material properties which must
be taken into account when installing and accli-
matising material pre installation. These are:
A. Reaction to moisture
Excessive humidity in the air or moisture in the
substrate or adhesive can cause changes in the
dimensions of the linoleum. The subsequent points
concerning sub-floors and adhesives, detailed
below, should be closely observed.
B. Veiling
The natural veiling caused during the curing pro-
cess of linoleum in the drying chamber is visible
as a yellowish discolouration. This disappears with
exposure to light. Under artificial light or weak
sunlight this process may take several days or
even weeks. Sheets and tiles laid at the same
time should be exposed to identical light con-
ditions.
Installing Armstrong DLW Linoleum is simplicity itself
if the following points are observed:
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1/Sub-floor
Armstrong DLW Linoleum can be installed on all
sub-floors that are permanently smooth, firm, free
of cracks and dry (see relevant country standards
for installation, together with other regulations app-
licable to all associated factors). Dense, non-
porous sub-floors, poured asphalt, for instance,
sand/cement screeds and wooden sub-floors
must be smoothed with a self levelling compound
of adequate thickness (minimum 3 mm); cement-
bound, low-tension compounds are suitable for
this purpose.
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The following values for residual moisture for various
sub-floors apply to substrates of normal thickness,
i.e. not greatly in excess of the
minimum require-
ments according to DIN 18560, BS 8203/4 or
relevant country standards and serve as guidelines
based on experience:
Maximum Permitted
Moisture content
Subfloors
in
CM-%
Cement floor
£
2,0
Anhydrite and
Anhydrite flooring
£
0,5
Surface moisture readings
£
75 % R.H.
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2
/
Adhesives
Application of all adhesives suitable for linoleum is
generally done with a B1 square-notched trowel,
using approx. 400-500 g per m
2
. Please also observe
the adhesive manufacturer's recommendations.
When dispersion adhesives are used for linoleum
2 mm thick on very smooth floors an A2 notched
trowel and approx. 350 g of adhesive per m
2
is
generally required. Adequate transfer of adhesive to
the backing material
(jute) should be checked conti-
nuously. We recommend that solvent free
adhesives such as dispersion or powder adhesives
should be used.
Information about adhesives suitable for laying
linoleum may be obtained from the Armstrong
Technical Department, telephone number
01235 554848 (or local country number).
