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Ardex A35 25kg

£40.80 per unit

Ardex A35 is a repair compound and is one of the sub-floor preparation products.

This floor screed is a versatile smoothing compound for levelling uneven floors before laying decorative floor coverings.

Ardex A35 self levelling screed is suitable for use over most substrates and adhesive residues.

Description

Ardex A35 is a repair compound and is one of the sub-floor preparation products.

This floor screed is a versatile smoothing compound for levelling uneven floors before laying decorative floor coverings.

Ardex A35 self levelling screed is suitable for use over most substrates and adhesive residues.

ARDEX A 35 is a special cement for producing a rapid setting,
rapid hardening and ultra rapid drying floor screed. After only
one day the compressive strength and tensile bending strength
of an ARDEX A 35 screed exceeds the acceptable minimum
attained by an ordinary cement screed after 28 days and is
also dry, irrespective of thickness. ARDEX A 35 can be used
to produce a bonded screed, an unbonded floor screed laid
onto a membrane, or a floating floor screed laid onto a
compressive quilt/insulating material. Bay divisions and
expansion joints should be incorporated as for normal
cement/sand screeds, taking into account the advice given
in the code of practice for the flooring being subsequently
applied (See British Standard Codes of Practice).
The mortar is mixed and applied in the same way as for normal
cement/sand mortar, except that the working time is reduced
to approximately 60 minutes at 20°C. ARDEX A 35 can be
walked on 3 hours after application and is dry enough to
receive floorcoverings after 24 hours at 20°C. However, where
the ARDEX A 35 screed is smoothed immediately after
application with ARDEX A 55 Ultra Rapid Drying Self-Levelling
Compound, vinyl and textile floorcoverings may be applied
after as little as 4 hours.
NOTE: Where the concrete base is insufficiently dry, or is
direct to ground without an effective protection from rising
damp, the ARDEX A 35 cement and sand screed must be laid
over an effective damp proof membrane, e.g. ARDEX DPM for
bonded screeds, or a suitable sheet membrane for unbonded
or floating screeds.
USE
ARDEX A 35 is used to produce bonded, unbonded and floating
screeds in internal situations where early foot traffic is
required and where rapid drying is essential, e.g. to allow
floorcoverings, ceramic tiles or natural stone tiles to be laid
after one day irrespective of thickness.
See overleaf for mix proportions and grades of sand used.
A 1:4 mix is used where a very heavy duty floor is required.
A 1:5 mix is suitable for all normal screeding situations.
ARDEX A 35 screeds are not recommended on ground supported
concrete floor slabs without an effective damp proof membrane,
for use as a wearing surface, or in wet locations.
See the SYSTEMARDEX commercial flooring brochure
for various applications.
THICKNESS
ARDEX A 35 should be applied at the conventional thicknesses
for normal cement/sand screeds i.e.
Minimum 15mm, (design thickness up to 40mm)
for bonded screeds.
Minimum 50mm for unbonded screeds.
Minimum 75mm for floating screeds,
65mm in lightly loaded (domestic) locations.
SUBSTRATE PREPARATION
Bonded Screed
The ARDEX A 35 cement and sand screed can be laid as a
bonded screed by applying an ARDEX A 35 grouting slurry to
a dry and suitably prepared concrete base. If the concrete is
not dry, 2 coats of ARDEX DPM may be used prior to applying
the ARDEX A 35 screed ‘fresh in fresh’ in a priming layer of
ARDEX R 3 E or a third coat of ARDEX DPM.
To prepare the grouting slurry dilute ARDEX P 51 with an
equal volume of water. Mix the ARDEX A 35 cement with the
diluted bonding agent to produce a creamy consistency
grouting slurry.
NOTE: If the concrete base is very rough, the grouting slurry
should be prepared by mixing the ARDEX A 35 cement with
an equal amount of sand prior to mixing with the diluted
bonding agent.
The ARDEX A35 cement and sand screed mortar must be
compacted onto the base ‘fresh in fresh’, whilst the grouting
slurry is still wet and workable.
Unbonded Screed
For unbonded screeds it is good practice to ensure that
the concrete slab surface is reasonably true and flat prior
to applying a separating or damp proof membrane.
Floating Screed
For floating screeds, place a suitable separating or damp proof
membrane over the insulation before applying the screed mortar

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