Norbat Rector presents GRANUMIX

GRANUMIX is a pre-mixed fiber mortarDelivered ready to use after mixing, without the need for additional components. Its composition includes 600 kg of bio-based material for 100 m² of 5 cm screedwhile retaining the mechanical qualities expected for everyday uses.

With 48 kg/m² in 5 cm thicknessthis screed limits the reported chargesIt adapts to many different surfaces: wooden floors (between joists or on existing joists), concrete floors et slabs on a raised platformThis versatility makes it easier to specify in renovation projects, where weight is a determining factor.

"GRANUMIX combines a significant bio-based component with the stability of a screed intended for everyday use."

Measured thermal and acoustic performance

The structure of the lightweight concrete based on GRANUMIX contributes to thethermal insulation of the floor, with a thermal conductivity (lambda) of 0,17 W/mKThis performance contributes to reducing heat loss and improving indoor comfort.

From an acoustic point of view, the combination of the screed with a deafening film allows a a 20 to 30 dB(A) reduction in impact noiseThis feature meets the expectations of residential projects, both collective and individual, where acoustic comfort becomes a central criterion.

"The solution improves occupant comfort by addressing both thermal and acoustic aspects."

Fire safety and durability of structures

GRANUMIX is classified Bfl-s1 in fire. It is non-flammable et unalterable over time, essential advantages for a screed intended to remain in place for the lifetime of the building.

Sa compressive strength reaches 500 tonnes/m², guaranteeing the reliability of the finished product. GRANUMIX is the only pre-mixed mortar for lightweight screed to benefit from CSTB Technical Assessment (DTA No. 13/18-1403_V2) and to be complies with standard NF EN 13813These references ensure the safety of the specification and use on construction sites, both for new builds and renovations.

"Regulatory compliance is essential for a solution intended for widespread prescription."

Simplified implementation to optimize construction sites

GRANUMIX is designed for reduce implementation stepsIn many configurations, it allows the direct installation of glued tileswithout welded mesh in the main section. This principle allows for win time, simplify the organization of the construction site and to optimize delivery times.

The solution comes from the recent acquisition of GRANULAND by Rector Lesage. It is part of the group's strategy to offer more sustainable building solutions, adapted to the practices of implementation teams and current regulatory requirements.

A response to the current challenges of construction

By combining lightness, bio-based part, technical performance et ease of useGRANUMIX meets the needs of professionals involved in both the renovation of existing floors and new construction projects. Presented at NorbatIt illustrates the evolution of screed solutions towards more responsible materials, without compromising on reliability.

GRANUMIX thus positions itself as a a credible alternative to traditional screeds, in line with the objectives of sustainable construction and user comfort, while remaining compatible with the economic and technical constraints of the construction sites.