Pleasant,
comfort-adapted floors with Granab systems
for a better working and living environment
In a good
living and working environment, it is important that floors
are not hard or entirely rigid, which
can lead to pain in the shoulders, back and legs. Granab systems,
with their integrated impact-dampening
effect, provide comfortable floors with documented degree
of deflection for point loads.
Deflection during application of point loads on floors
laid on a Granab system is dependent on – besides the
subfloor construction and c/c distance between the
girders – the choice of floor covering and how installation
is performed.
The respective flooring manufacturers provide information
about deflection for each type of floor covering.
Deflection of the finished floor construction with a
point load of 1 kN should not exceed 2 – 3 mm according
to the SP Technical Research Institute of Sweden.
Deflection properties Example from test measurements of deflection
when a point load is applied
Labratorietester av nedböjning vid olika punktbelastningar.
Testing and certification are conducted by the SP Technical
Research Institute of Sweden. Contact Granab
about full type-approval no. 192101.
Granab systems with 22-mm chipboard and both 15-
mm or 22-mm parquet have been tested in a number
of residential projects by the SP Technical Research
Institute of Sweden with respect to deflection of the
completed floors. The results show an average deflection
within 2 mm of other measurement points in each
flat with a point load of 1 kN.
Documentation from measurements conducted by
the SP Technical Research Institute of Sweden with
alternative floor coverings from a large number of field
measurements in completed residential projects can
be provided by Granab upon request, as
well as figures from lab measurements
conducted by the SP Technical Research Institute
of Sweden and measurements from a large number
of assembled test floors in Granab's testing facility with
alternative floor coverings. All measurement results
are within the margins for recommended values.
