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wedi building board PreLine

wedi building board PreLine

„Quick. Reliable. Warm.“

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.

Technical details wedi building board PreLine


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
Thermal conductivity EN 13164 0,036 W/mK
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

Length × width × thickness
Milling groove: width × depth
076400257 wedi building board PreLine 1240 x 600 x 30 mm
16 x 20 mm
076400259 wedi building board PreLine 1240 x 600 x 40 mm
16 x 20 mm
076400260 wedi building board PreLine 1240 x 600 x 50 mm
16 x 20 mm
076400258 wedi building board PreLine 1240 x 600 x 60 mm
16 x 20 mm

Area of application wedi building board PreLine

Its special properties make the wedi PreLine a versatile element that is especially suited for construction/renovation of bathrooms:
• Support element for the installation of hot water heating systems with Ø16 mm pipes
• Backing material for laying tiles, slabs and natural stone coverings using the thin bed method
• Moisture protection
• Effective thermal insulation

wedi PreLine is approved for indoor use in rooms with normal temperatures and for floor use in rooms with similar loads to living spaces. Roll loads with high point loads are not permitted.

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