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Application

CASEA Sudanit 280 Alpha Hemihydrate Screed is suitable for floors in homes, offices, public buildings and places exposed to similar loads. It may be applied as a levelling screed directly onto a load bearing floor, unbonded on a separating barrier (polythene) or as a floating floor and is particularly suited in conjunction with underfloor heating or cavity floors. It should be covered with a floor finish such as tiles, linoleum, parquet, cork or carpet. If a cement based adhesive or smoothing compound is required, the surface of the screed must first be sealed, using an appropriate acrylic primer/ sealer.

Description

Südanit 280 Alpha Hemihydrate Screed is a pumpable, high-quality screed material based on calcium sulfate. It is supplied using a pre-blended compound and is mixed on site with a special blend of approved aggregates to EN 13813: 2002. It is designed for application at thicknesses of 20–90 mm. Südanit 280 Alpha Hemi Hydrate Binder complies with EN 13454-1: 2004 and is CE marked.

Benefits:

  • Smooth laitance free finish.
  • Pumpable.
  • Underfloor heating – full encapsulation.
  • Suitable for underlayment in wet areas.
  • Reduced drying times.
  • CE marked.
  • BS EN 13454-1/ EN 13813: 2002.

Applications:

CASEA Sudanit 280 Alpha Hemihydrate Screed is suitable for floors in homes, offices, public buildings and places exposed to similar loads. It may be applied as a levelling screed directly onto a load bearing floor, unbonded on a separating barrier (polythene) or as a floating floor and is particularly suited in conjunction with underfloor heating or cavity floors. It should be covered with a floor finish such as tiles, linoleum, parquet, cork or carpet. If a cement based adhesive or smoothing compound is required, the surface of the screed must first be sealed, using an appropriate acrylic primer/ sealer.

General information
Finish

Smooth finish up to SR1

Features

Smooth laitance free finish, pumpable, rapid set, suitable for full encapsulation underfloor heating, suitable for unlayment in domestic wet areas, reduced drying times

Material

Calcium sulphate-based screed

Uniclass 2015 Ready-mixed self-smoothing calcium sulfate screeds (Pr_35_31_06_72)
Specification data
Product Reference

CASEA Sudanit 280 Floor Screed

Standard product features

Technical characteristics (to EN 13813: 2002):

  • Maximum thickness: 90 mm.
  • Minimum thickness: Bonded, 20 mm. Unbonded, 30 mm. Domestic, 35 mm. Commercial, 40 mm. Over underfloor heating pipes: 25 mm (BS 8204-7).
  • Use: Internal.
  • Compressive strength (28 days): >20 N/mm², >25 N/mm², >30 N/mm², >40 N/mm²
  • Flexural strength (28 days): > 4 N/mm², > 5 N/mm², > 6 N/mm², > 7 N/mm²
  • Tensile adhesion: > 1.5 N/mm².
  • Shrinkage (28 days): < 0.1%.
  • Hardening time (before foot traffic): 8–12 hours.
  • Recommend water content: 14–16%.
  • Reaction to fire: A1 non-combustible.
  • Thermal conductivity: 1.6 W/mK.
  • Wet Density: Ca. 2,088 kg/m3 (2.1 kg/mm/m2).

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