Python LR Self Levelling Compound CT C35 F6 – 25kg Python LR is a high-strength, fibre reinforced, flexible self levelling compound designed for smoothing and levelling sub-floors prior to floor covering installation. This single-part, fast setting, shrinkage-compensated cement-based formulation is ideal for both commercial and domestic applications. It offers excellent flow and adhesion, suitable for a wide range of substrates including plywood and underfloor heating systems. Product Features Fast setting – ready for ceramic tiles in 3 hours and impervious floor coverings in 24 hours Apply in depths from 2mm up to 50mm in a single pour Fibre reinforced for added strength and flexibility Protein free formulation, suitable for sensitive environments Excellent adhesion to substrates including sand/cement screeds, concrete, plywood, tile backer boards, and electric or water underfloor heating Shrinkage compensated to minimise cracking Good flow properties for smooth finishes Can be used externally under certain conditions (consult technical support) Technical Information Specification Value Classification CT-C35-F6 to EN 13813:2002 Working Time at 20°C 20–30 minutes Time to Foot Traffic 3 hours Application Thickness 2mm to 50mm (single application) Compressive Strength (BS EN 13892-2) 1 day: >15 N/mm², 7 day: >20 N/mm², 28 day: >30 N/mm² Flexural Strength (BS EN 13892-2) 1 day: >3 N/mm², 7 day: >5 N/mm², 28 day: >7 N/mm² Flow Properties (using 30mm x 50mm flow ring) 135–145 mm Minimum Application Temperature 5°C Colour Grey Pack Size 25kg Coverage Approximately 4.2m² at 3mm thickness per 20kg (proportionally for 25kg) Shelf Life 6 months if stored correctly Other Details Single part, just mix with water (4.5 to 5.0 litres per 20kg) Ideal for use over plywood, sand/cement screeds, concrete, ceramic tiles, epoxy damp proof membranes, and many more substrates Suitable for encapsulating electric underfloor heating elements Can be pumped for large scale application Tools should be cleaned immediately after use Why Choose Python LR Self Levelling Compound? Python LR offers rapid setting, durability, and flexibility for smooth, level floors ready for fast-track decoration or floor covering installation. Its excellent adhesive qualities combined with fibre reinforcement make it a reliable choice for professional and domestic projects, including underfloor heating applications.