Thermal insulation PRELINE

thermal insulation
thermal insulation
thermal insulation
thermal insulation
thermal insulation
thermal insulation
thermal insulation
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for underfloor heating
Technical characteristics
high-performance, waterproof
Fire Class
Euroclass E
fire protection
Thermal conductivity

0.036 W/(m.K)


30 mm, 40 mm, 50 mm, 60 mm (1.18 in)


1,240 mm (49 in)


600 mm (24 in)


The wedi building board PreLine is a fully prepared building board element for easy installation of hot water heating systems. Factory integrated recesses allow for quick and safe installation of water pipes whilst strong insulation properties of the material itself prevent heat escaping to the ground thus promote a balanced heat distribution across the entire space. Adhesion of the wedi PreLine elements to the screed foor and backflling of the pipe ducts is done very simply with the appropriate tile adhesive (recommendation: wedi 320). It truly is the perfect element for quick and waterproof implementation of underfoor heating systems. Long-term compressive strength (50 years) ≤ 2% compression EN 1606 - 0,08 N/mm2 Compressive resistance or compressive strength at 10% compression EN 826 - 0,28 N/mm² Associated modulus of elasticity EN 826 - 10 – 18 N/mm2 Tensile strength EN 1607 - 0,45 N/mm2 Shearing resistance EN 12090 - 0,2 N/mm2 Shear modulus EN 12090 - 7 N/mm2 Bulk density EN 1602 - 32 kg/m3 Resistance to water vapour diffusion(μ) EN 12086 - 100 Water absorption under long-term immersion EN 12087 - ≤ 1,5 Vol.-% Capillar action - 0 Linear coefficient of thermal expansion - 0,07 mm/mK Temperature limits - -50°C / +75°C Fire behaviour EN 13501 - E Propellant gas, carbon dioxide, GWP value - 1 Thanks to its special properties, wedi PreLine is very versatile and can be used in refurbishments and renovations of bathrooms, in particular it can be used as a: • Base element for the installation of hot water heating systems with Ø16 mm pipes. • Base element for laying tiles, slabs and natural stone floor coverings, using the thin-bed method.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.