CEMtobent DS

CEMtobent DS is a sodium-bentonite waterproofing membrane, specially designed for use on vertical and horizontal applications on below ground reinforced concrete structures.

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CEMtobent DS consists of two high quality woven clay liners, a transparent polyethylene honeycomb liner where the sodium bentonite powder is held, and a rain protection non-woven fleece, which are mechanically stitched together to form a strong composite.

CEMtobent DS is used for waterproofing of all basement grades according toBS8102:2009.

Key Features & Benefits

  • Tough and resistant
  • Seals small cracks in the concrete
  • Demonstrates self-healing properties
  • Higher puncture and tear resistance compared to conventional foils and coating
  • Quick and easy to install without complicated welding equipment
  • High compound shear strength
  • The reinforcement fibre structure and thermally bonded cover layer form a tight composite
  • Can be installed in every season independently of temperature and weather conditions
  • Quality control tests to ensure consistent high quality.
  • May be installed pre or post-form

Specification Tip for Design Professionals:

CEMtobent DS may be specified by name or by using the following description: a propriety waterproofing membrane consisting of a two high quality woven clay liners, a transparent 3D composite liner with a unique cell structure, which encapsulates the sodium bentonite powder, and a rain protection non-woven fleece, which are mechanically stitched together to form a strong composite.

Test Results:

  • German Standards DIN EN 965, 964-1, DIN 18121, DIN 18132
  • Independent Test on Product’s Performance – Brendebach Ingenieure GmbH (Structural Engineers)
  • CE Marking

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Jamie Smyth

Quantity Surveyor

Jamie brings our team a wealth of knowledge in project costs management, from the cost and risk analysis to the preparation and submissions of tenders and valuations.


Jamie has spent over ten years working as a Quantity Surveyor with a background in the construction industry (from residential build to pharma projects). He has been involved in all aspects of construction collaborating with small builders and large contractors on projects of varying sizes and scale. All this contributed to his thorough understanding of the requirements and priorities when performing his tasks of a Quantity Surveyor.


On a personal note, Jamie enjoys playing soccer and is a true golf fanatic. He enjoys travelling and fine dining.

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