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.

Find the right Topflow Screed A low carbon liquid screed for your project:

Topflow Screed A FD E2C : Faster drying floor screed that is earlier to cover

Topflow Screed A Thermio + : Liquid screed for underfloor heating with guaranteed thermal conductivity backed by BBA

Topflow Screed A XTR : Screed for UFH and higher floor loadings

Topflow Screed A Finio : Thin section lightweight liquid screed

Topflow Screed A Excelio : Ultra thin floor screed

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 (Topflow Screed A Excelio) 8 mm (over maximum 30% of total floor area).
Unbonded: Minimum: 20 mm (Topflow Screed A Finio & Excelio)
Floating over thermal/ sound insulation: Minimum: 30 mm -domestic (Insulation min 140kPa) 35mm commercial (Topflow Screed A Finio & Excelio)
Floating over sound insulation - rubber acoustic layer: Minimum: 25 mm (Topflow Screed A Finio & Excelio)
Cover over conduits/ heating pipes: Nominal: 25 mm, Maximum: 80 mm.

(For full details see table in Topflow Screed A Range Guide on tarmac.com)

BBA certificate 16-5301 Thermio+ Anhydrite Screeds