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Bostik Cempolay Ultra Strong Exterior Self-Levelling Compound 20kg

Item Code: 547970285

Bostik Cempolay Ultra Strong Exterior Self-Levelling Compound 20kg
£46.85Ex VAT£56.22 Inc VAT
Click & CollectAvailable for collection
DeliveryFree delivery available (restrictions apply)
Bostik Cempolay Ultra Strong is a one part, exterior self-levelling compound for resurfacing and levelling uneven interior and exterior floors prior to laying decorative coverings or painting. The versatile high-strength screed is water- and frost-resistant, making it suitable for some exterior applications, such as laying ceramic tiles, slab and natural stone. Thanks to its strength, this exterior floor levelling compound can withstand vehicular traffic, making it an excellent choice for domestic garage floors when overpainted with suitable floor paint.

With a rapid-setting formula, Bostik Cempolay Ultra Strong has a walk-on time of just two hours and can be laid over substrates including concrete, sand/cement screeds, stone/brick and unglazed ceramic tiles. The self-levelling screed can be extended for filling holes and forming sloping screeds with up to 5% downward gradients. It can also be used with water underfloor heating systems.

This self-levelling compound covers approx. 7.3m² per bag at 2mm thickness, approx. 5m² per bag at 3mm thickness, approx. 3m² per bag at 5mm thickness and approx. 0.75m² per bag at 20mm thickness.


  • High-strength, fast-setting formula
  • Water- and frost-resistant
  • Can withstand light vehicular traffic - ideal for domestic garage floors
  • Can be overpainted with a suitable floor paint
  • Accepts foot traffic in just 2 hours
  • Suitable for use with underfloor heating
  • Suitable for interior and exterior use
Product BrandBostik
Coverage (m2)7.8
Data SheetsConversion & Materials Calculator

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