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Gypsol Summit self-compacting flowing screed is made to exacting standards by quality assured manufacturers to BS EN 13813. It is a combination of high quality Gypsol binder, specially selected sands, water and special additives where required. It is designed specifically for use in high rise applications where the screed needs to be pumped to ten stories and above without the danger of segregation. The screed is suitable for the encapsulation of an underfloor heating system, either electric or warm water.

Gypsol Summit Flowscreed is suitable for most construction types including steel frame, concrete frame, lightweight steel and traditional masonry construction, both residential and commercial and where required can be used to improve the acoustic performance of the floor to meet or exceed Part E of the Building Regulations (E&W). Gypsol Summit Flowscreed also improves the environmental and durability characteristics and gives a concrete feel to a timber floor.

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Standard product features

Physical properties:

  • Appearance: Off white fluid mortar.
  • Density: Wet – 2200 kg/m³, dry – 2000 kg/m³.
  • Minimum strength (28 days): CA-C25-F4.
  • Required flow (to BS EN 13454-2): 230–270 mm.
  • Drying time (to <75% relative humidity (RH) at 50 mm depth): Natural drying 28 days; forced drying 13 days. Can take foot traffic 24–48 hours and loading 5–7 days (based on good drying conditions of 60% RH at 20ºC).
  • Fire rating: Class A1fl.

Application (minimum depth):

  • Bonded: 25 mm.
  • Unbonded: 30 mm.
  • Floating: 35mm domestic, 40 mm commercial.
  • Acoustic: 80kg at 40 mm.
  • Cover to conduits: 25 mm.

Gypsol screeds are suitable for use on most substrate types.


  • Recycled content: Binder – 98%, mortar – up to 40%.
  • Carbon emissions: Binder – 10–20 kg/tonne, mortar – 20–40 kg/m³.
  • VOC: Zero.
  • Recyclability: 100%.

NBS Specification

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This product is associated with the following NBS Create clause:
45-55-10/325 Self-smoothing calcium sulfate screeds (ready mixed)

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

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+44 (0)1928 574 574

Product reference

Gypsol Summit Anhydrite Screed for High Rise Applications

Manufacturer details

Percival Lane,
Cheshire, WA7 4UY
Tel +44 (0)1928 574 574
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