Innovative thin floor heating systems

Important results from the project

The application concerns the investigation of the technical and design conditions of the intended floor system, ie. reliability, energy efficiency and strength. The graphite mat called Heat Spreader is a 0.75 mm thin mat made of graphite strips that spread the heat evenly over the surface and is placed near the heat source and is used for all floor systems / water / air. An estimate that only 6 mm above the highest point with graphite mat is needed, but this needs to be verified by tests.

Expected long term effects

Test results were better than expected and meet the required requirements. For tiled flooring, it is recommended that you only float 3-4 mm above the graphite mat with Mapei Uniplan Eco (Ultraplan Maxi - Europe) and then tiles sizes atleast 150 x 150 mm. The company´s concept can now reach the market with approved test results. With the reduction of filler mass, as well as the milled hard board and Heat Spreader provides a system that reduces both material amount, operating costs and not least the strong reduction of carbon dioxide emissions by about 80%

Approach and implementation

Three different specimens with tracked polypropylene board (XPS300) that were milled for 16 mm water pipes according to the pattern developed. The Graphite mat Heat Spreader was placed on top and Mapei Uniplan Eco filler screed was used. The test was carried out in accordance with EN 13892-2 with two spot loads in terms of strength tests and adhesion tests according to CBI method 6. From each test body were then divided into 3 equal surfaces for breakage and flexural strength. For the adhesion 9 tests were conducted.