Topflow Screed A is manufactured with a synthetic anhydrite binder in place of cement and is pump applied due to its fluid consistency. It is easier to install, covering areas of up to 2000 m² per day.

Features and benefits:

Manufactured to BS EN 13813:2002, with a recycled source of gypsum (calcium sulfate) rather than cement. It has a free-flowing fluid consistency and is applied by pump.
Floors are suitable for foot traffic within 24–48 hours, while drying takes 40 days, or sooner with force drying (available after only seven days).
Lower carbon footprint than traditional cementitious screeds.
Suitable for use with low energy underfloor heating.
Any type of floor finish can be applied to the screed.
Maintenance of fluidity for two hours.
The screed is produced using Gyvlon binder which is manufactured from an industrial by-product (average 36% recycled content).
Water demand: 13–18% b.w.
Flow range: 230–280 mm.
Volite Organic Compound (VOC) free and 100% recyclable.

Screed thickness:

Bonded: Minimum: 25 mm.
Unbonded over a solid base: Nominal: 35 mm. Minimum: 30 mm.
Floating over thermal/ sound insulation: Minimum: 40 mm.
Cover over conduits/ heating pipes: Nominal: 30 mm, Maximum: 80 mm.

Topflow Screed A Steeldeck:

Designed specifically to be used with the Lewis Deck dovetail sheeting, for use with timber, metal web or steel joists in masonry, timber or lightweight steel structures.
Suitable for ground, separating or mezzanine floor constructions.
Increased productivity and improved loading compared to floating floor treatments.

Topflow Screed A Sky

Designed for use in high rise buildings above ten storeys.
Specially formulated to reduce moisture loss to pump lines and inline segregation.

Topflow Screed A Excelio

Designed for use with underfloor heating systems and where higher than usual loadings are expected.
Suitable for both domestic and commercial applications as a floating screed.

Topflow Screed A XTR:

Designed for use with underfloor heating systems and where higher than usual loadings are expected.
Suitable for both domestic and commercial applications as a floating screed.

Topflow Screed A Soundbar:

Designed specifically for use over timber joints both in masonry and timber framed designs.
Suitable for both commercial and residential projects where improved acoustic, loading and durability are required.
Improved loading compared to timber batten floors.

Topflow Screed A Thermio +:

Designed for use with underfloor heating systems and where higher than usual loadings are expected.
Suitable for both domestic and commercial applications as a floating screed.

BBA certificate 16-5301 Anhydrite Screeds