CASEA Südanit 280 Alpha Hemihydrate Screed
Verified by manufacturer today
CA-C16-F4
CA-C16-F4
EPD
Certificate type
A pumpable high-quality calcium sulfate screed for application at thicknesses between 20-90 mm.
Application
Südanit 280 Alpha Hemihydrate Screed is suitable for floors in homes, offices, public buildings, and places exposed to similar loads.
Südanit 280 Alpha Hemihydrate Screed 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.
Südanit 280 Alpha Hemihydrate Screed 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.
Related Downloads
- TDS SMET_Tiling Onto Calcium Sulphate Floor Screed_System I
- TDS SMET_Tiling Onto Calcium Sulphate Floor Screed_System II
- Sudanit 280 Alpha Hemihydrate Floor Screed – UFH Commissioning – Floor Screed Drying Schedule
- EPD – CASEA Calcium Sulphate Flowing Screed
- SMET Floor Screeds and Compounds Product Selector
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.
Features and 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.
General information
Finish | Smooth Guidance for specification option: Laitance free. |
Material | Calcium sulphate Guidance for specification option: based screed |
Uniclass | |
CAWS | M13/10 Proprietary trowelled levelling screeds M13/120 Proprietary self smoothing levelling screeds |
Product range |
Specification data - Ready-mixed self-smoothing calcium sulfate screeds
Classification data | |
Compressive strength - 28 days | 16 N/mm². |
Flexural strength | >4 N/mm². Manufacturer guidance(28 days) |
Tensile Adhesion | >1.0 N/mm². |
Shrinkage | <0.1%. Manufacturer guidance(28 days) |
Drying time | 5–6 hours. Manufacturer guidance(Hardening time, before foot traffic) |
WaterContent | 14–16%. Manufacturer guidance(Recommended) |
Reaction to fire | A1 non-combustible. |
ThermalConductivity | 1.6 W/mK (to EN 12664), 2.6 W/mK (to ISO 22007-1). |
Density | Ca. 2088 kg/m³ (2.1 kg/mm/m²). Manufacturer guidance(Wet) |
Thickness | Minimum: Bonded, 20 mm. Unbonded, 30 mm. Domestic, 35 mm. Commercial, 40 mm. Over underfloor heating pipes: 25 mm (BS 8204-7); Maximum: 90 mm. |
Sustainability data
Contains Red List materials | No |
Country of material origin | Germany |
Country of product manufacture | Germany |
Manufacturing plant location | |
Material | Calcium sulphate Guidance for specification option: based screed |
| Carbon dioxide equivalent | |
Carbon dioxide equivalent, as defined in BS EN 15804 Certified | |
Stage Normalised unit (kg CO₂ eq/kg) Declared unit (kg CO₂ eq/kg) Stage:A1–A3 ('Production stage') Normalised unit : 8.05 (kg CO₂ eq/kg) Declared unit : 8.05 | |
Product certifications
BIM objects
This BIM object has been authored to meet the requirements of the
Find out more about the
| Platform | Compatible | Version |
|---|---|---|
 IFC | IFC2X3 | 1 |
 Revit | Revit 2016 | 2 |
Product certifications
EPD
EPD - CASEA Calcium Sulphate Floor Screed | Valid until 28.08.28
Literature
Literature type
SMET Floor Screed and Compounds Product Selector
SMET | UZIN CA Screed Flooring Installations Brochure
BSI Certificate of Registration ISO 14001:2015
BSI Certificate of Registration ISO 45001:2018
BSI Certificate of Registration ISO 9001:2015
Corporate and Social Responsibility Statement Policy | Smet Building Products Ltd
SMET -Tiling Onto Calcium Sulphate Floor Screed | System I
SMET -Tiling Onto Calcium Sulphate Floor Screed | System II
SMET Professional Tiling Systems Brochure
BES 6001 Responsible Sourcing of Products
ASBP Membership Certificate_SMET_valid until May 26
Flowing Screed Assoc Cert 2025 - Smet Building Products Ltd
Irish Green Building Council Membership Cert _Smet Building Products Ltd_ valid until 26
Responsible Sourcing Policy | Smet Building Products Ltd
UKGBC_Member Certificate - Smet Building Products Ltd_valid until 26
Case studies
44,000 m2 of Screed delivered to our partners for The National Forensic Mental Health Hospital in Portrane, Ireland
Südanit 280 Alpha Hemihydrate | Mobile Screed Factory | Fast Floor Screed | A1 Rated Passive House in Cork
Südanit 280 Alpha Hemihydrate | Mobile Screed Factory | Fast Floor Screed | 20,000 m2 apartments Dublin
14,000 m2 LiteFlo® Lightweight Flowing Screed | The Tower at GWQ London
2,000 m2 LiteFlo® Lightweight Screed floor | Hotel in Edinburgh | IFT