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.