INTERBETON, with a firm commitment to sustainability and technological innovation, introduces INTERFILL to the Greek market—a high-specification flooring and roofing solution designed for projects that require low weight, thermal efficiency, and long-term durability. INTERFILL is a ready-to-use filling screed, ideal for floors and flat roofs, that improves both technical performance and on-site efficiency. It is produced in INTERBETON’s state-of-the-art plants in compliance with EN 13813, providing a level of quality and consistency that cannot be achieved with on-site mixed mortars. It is also supported by advanced pumping services through a flexible hose network, guaranteeing comfortable, safe, and quick placement—even in hard-to-reach areas of the project.
INTERFILL provides a fully integrated filling solution with advanced thermal properties. It ensures exceptional durability, stability, and construction efficiency while reducing the environmental footprint. Suitable for both modern and traditional projects, INTERFILL is a valuable tool for engineers and contractors seeking quality, consistency, and sustainability in every application.

INTERFILL combines thermal insulation, mechanical stability, and ease of application, making it an ideal substrate for fillings. Its lightweight composition reduces structural loads, while its low shrinkage minimizes the risk of cracking and detachment of the final surface. Industrial production ensures consistent quality and predictable performance, delivering uniform results every time.
With a compressive strength of ≥ 5 MPa and flexural strength of ≥ 1 MPa (class CT-C5-F1), INTERFILL provides mechanical reliability and structural stability. Its low shrinkage (Δ1 = 0.059%) minimizes the risk of cracking, curling, or detachment of tiles and final floor finishes.
• 28-day compressive strength: ≥ 5 MPa
• Flexural strength: ≥ 1 MPa
• Shrinkage (Δ1): 0.059%
• Consistency class: S5
• Flow: 40–50 cm

INTERFILL, as a lightweight, thermal-insulating ready-mixed screed, integrates features that reduce the project’s environmental footprint and enhance sustainability throughout the entire building lifecycle.
INTERFILL is an industrially produced solution that supports sustainable construction planning by enabling accurate quantity estimation, consistent quality, and reduced on-site water consumption through the elimination of wet curing. Its reduced dry density (1600–1800 kg/m³) lowers dead loads and embodied emissions, while its enhanced thermal performance (λ = 0.66 W/mK) helps reduce heating and cooling demands and supports NZEB/EPBD compliance. Applied rapidly in a single layer and covering over 800 m² per day, INTERFILL shortens construction time, minimizes energy use and site impact, and ensures material safety and healthy indoor air, while remaining fully compatible with passive systems such as underfloor heating and roof slope formation.