CEMCO B1 is a premixed, flexible and tough membrane with the ability to withstand continuously wet environments and ponding. CEMCO B1 is low in odour, user and environmentally safe. CEMCO B1 is designed for waterproofing wet areas, showers, laundries, terraces, balconies, decks, concrete slabs and general structures that will be covered over with toppings, tile beds or overlay finishes.


  • Water based, free of solvents, non-toxic and non-flammable.
  • Withstands continuously wet environments and ponding
  • Designed for CEMCO, WESTBUILD and Coloro adhesives and building systems. However compatible with concrete, render and masonry surface toppings.
  • Excellent vapour barrier with low water vapour transmission properties.
  • Can be applied by brush, roller or spray unit.
  • Low in odour.
  • Showers bathrooms and laundries.
  • Balconies, podiums, terrace floors and decks.
  • Durable and touch seamless finish

Available Quantities

4 Litre Pail (4 units per carton) 
15 Litre Pail

Quick Information

  • 15L will cover 22.5m2 per coat
  • 2 coats are to be applied

  • In bathrooms, balconies, wet areas and water tanks
  • Ensure fully cured before contact with water

Further Information

Please visit our technical centre

Become a stockist

To find out how you can stock Westbuild products, please fill in the form below or call (08) 9309 2029.

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Request Delivery - Direct to Site

  • NOTE: To order this service, you must be an approved reseller or stockist of Westbuild products with an existing account. Call 9309 2029 for more information.



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