In civil engineering we generally distinguish between unfinished and finished floor. The unfinished floor is the base layer (e.g. the concrete slab), whereas the finished floor is the floor build-up and covering on top of this base. The build-up of the floor depends on the usage of the respective building. For residential buildings a soundproof and heat-insulated floor build-up is a good solution.
EnEV: U-value = 0.50 W/m²K
DIN 4108: R = 0.90 m²K/W
Avoid the addition of new concrete slabs in old buildings. There is the risk that water which previously could diffuse through the floor to the air is blocked and thus has to escape into the walls (rising moisture) =>bloom and moist walls. Always let a specialist check for pressurised water.
Casting a new concrete floor has led to considerable moisture damages, especially where old buildings are concerned.
Build-up: Starting at the bottom
300 mm of rubble or gravel as an anti-capillary layer, 200 mm concrete slab (can be thinner), PE-film as moisture barrier, 80 mm Hiss Reet panel extra as insulation, oiled paper, 80 mm cork-clay floor screed for ground levelling and moisture control, floor battens, floor boards.
Details on the Use and Application of Hiss Reet Panels as Floor Insulation:
The information given above is based on the calculations and information of HISS REET Schilfrohrhandel GmbH and the product specifications of the manufacturer. The content is only a selection of especially important information. The author reserves the right not to be responsible for the topicality, correctness, completeness or quality of the information provided. Liability claims regarding material or ideal damage caused by the use of any information provided, including any kind of information which is incomplete or incorrect, will therefore be rejected, unless there is evidence of intentional or gross negligence on part of the author.
The information provided cannot substitute individual specialist advice by a planner.
Dipl. Ing. Stefan Neumann
Dipl. Kfm. Philip Kullmann