Tarmac's Gyvlon Screed A binder is used as a composite reactive filler in this pump-applied, free flowing, self compacting synthetic anhydrite floor screed.
Provides smooth, flat surface for the application of most floor coverings.
Provides a high-quality surface finish, with minimal cracking and no curling.
Reduced need for construction joints and no need for reinforcement.
Ideal for use in all warm water underfloor heating applications.
Environmentally friendly – it is protein free so will not harbour bacteria.
Ready in 24 hours – Suitable for foot traffic usually within 24 to 48 hours. Partitions can be erected seven days after placing.
High strength – Typical compressive strengths up to CA25F4/mm2 (BRE Test Category A to BS8204) BSEN 13813.
Tarmac Topflow Screed A
Topflow Screed A is a pump-applied, free-flowing floor screed.
Strength(28 days)C25 N/mm2
Access for light foot traffic after:24 - 48 hours
Working time approximately240 minutes
Drying timeDries at a rate of 1mm per day up to a screed depth of 40mm in good drying conditions; 0.5mm per day thereafter
Minimum laying thicknessesBonded: 25mm / In contact with substrate: 30mm / Unbonded: 30mm / Floating Commercial: 40mm / Floating Domestic: 35mm
Cover to conduits25mm minimum (30mm nominal)
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