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wedi building board PreLine

wedi building board PreLine

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„Quick. Reliable. Warm.“

Product information

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.

The prefabricated wedi building board PreLine allows for quick and waterproof implementation of underfoor heating. The water pipes are simply laid in the integrated recesses (recommendation: aluminium PEX Ø16 mm) and backflled using wedi 320 tile adhesive.



Technische Eigenschaften 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
Wasseraufnahme bei langzeitigem Eintauchen EN 12087 ≤ 1,5 Vol.-%
Kapillarität 0
Linearer Wärmeausdehnungskoeffzient 0,07 mm/mK
Temperaturgrenzen -50° C / +75° C
Brandverhalten EN 13501 E
Treibmittel Kohlendioxid GWP-Wert 1

Product sizes

Order no. Designation 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

Due to its special properties, wedi PreLine can be used in many different ways, especially when renovating and renovating 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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wedi building board PreLine

wedi building board PreLine

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