CASEA Casufloor C25 F5 – Alpha Hemihydrate Flowing Screed

Alpha Hemihydrate screed CASEA Casufloor C25/F5 is a pumpable, high-quality screed material based on Calcium Sulphate. It is supplied as a pre-blended dry powder and is designed for application at thicknesses of between 30 and 90 mm. Casufloor C25/F5 complies with EN13813: CA-C25-F5 and is CE-marked.

CASEA Casufloor C25/F5 – Alpha Hemihydrate Screed is suitable for floors in homes, offices, public buildings and places exposed to similar loads. The product may be applied as a levelling screed directly onto a load bearing floor, unbonded on a separating barrier (polytheen), as a floating floor and is particularly suited in conjunction with underfloor heating or cavity floors. Casufloor C25/F5 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 CASEA Casufloor C25-F5-Alpha Hemihydrate Screed

icon-pdf SMET Floor Screed and Compounds Product Selector

NBSplus National Building Specification Clause

Benefits of CASEA Casufloor C25/F5

• Smooth Laitance Free Finish
• Pumpable
• Under Floor Heating – Full Encapsulation
• Suitable For Underlayment In Wet Areas
• Reduced Drying Times
• CE Marked
• EN 13813: 2002

Technical Details for CASEA Casufloor C25/F5

Screed Specification EN 13813: 2002
Maximum Thickness 90mm
Minimum Thickness Bonded: 20mm

Unbonded: 30mm
Domestic: 35mm
Commercial: 40mm
Over Underfloor heating Pipes:  25mm (BS 8204-7)

Use (External Use) No
Use (Internal Use) Yes
Compressive Strength (28 days) >25  N/mm²
Flexural Strength (28 days) > 5 N/mm²
Modulus of Elasticity Approx. 18 kN/mm²
Delivery Approx 550 L/t, approx 12.5 m² @ 40mm, approx 22 L liquid screed per 40kg bag
Consumption Approx. 18 kg/m2 each 1 cm
Water Demand 7-8 L per 40 kg bag
Pot life Maximum 45-60 minutes depending on ambient conditions
Reaction To Fire A1 Non-Combustible
Packaging available in 40kg bags 30 per pallet,1-tonne bags, and site silos.
Flow Rate 210 – 230mm

Floor Screeds & Compounds from Smet Building Products Ltd have been used throughout Europe for over 40 years. Our comprehensive German-made portfolio includes Calcium Sulphate Based Screed BindersSelf Smoothing Calcium Sulphate Based Screeds & Compounds, Cement-Based Screed Binders and Self Smoothing Cement Based Screeds, Lightweight Flowing Screeds & Compounds, Multi-Purpose & Repair Screed Mortars and Rapid drying solutions for Domestic, Commercial, Industrial, and Design use. The SMET range has a Floor Screed solution for any building requirement.