Ardex A70 Gypflow 25Kg

Description

Ardex A70 Gypflow 25Kg is a quick drying, flowable Calcium Sulphate screed that is specially formulated to receive floorcoverings in as little as 14 days – twice as fast as standard Calcium Sulphate screeds. Ardex A70 Gypflow 25Kg is pre-blended and only requires the addition of water.

ARDEX A 70 is used to produce unbonded and floating screeds for internal locations. It can also be used for repairs to existing calcium sulphate screeds. It is ideal for situations where early foot traffic and rapid hardening is required. ARDEX A 70 is suitable for use over underfloor heating systems. ARDEX A 70 must only be used on floors with a functioning damp proof system.
ARDEX A 70 is not suitable for use in locations with prolonged exposure to moisture.

COVERAGE
A 25kg bag of ARDEX A 70 will cover approximately 0.4m2 at 35mm thickness.

DRYING TIME
ARDEX A 70 will typically be walkable in as little as 6 hours at 20°C. Note that lower temperatures will slow the rate of hardening and higher temperatures will accelerate it.

ARDEX A 70 is dry enough to receive floor coverings when a moisture content of ≤ 2% is measured. At 20°C and under good drying conditions this is typically after 14 days.
Application over under floor heating systems: When the ARDEX A 70 screed has been laid on a hot water floor system, 3 days should be allowed to elapse before heating the water up to a temperature of 20°C; this should then be maintained for a further 3 days. The maximum floor temperature should then be used and maintained for a further 4 days. Throughout this time,
draughts across the screed must be avoided. The floor should then be allowed to cool down to room temperature (above 15°C) before laying floorcoverings.
Once hardened, ARDEX A 70 will need sanding to remove any loose materials before receiving further treatment. It is recommended that the surface be sanded 48 hours after hardening and inside 7 days.