CEMswell is an extruded rubber based compound made from butyl rubber, hydrophilic resin, polyethylene, silicone and special admixtures used to seal joints in pre-fabricated concrete elements.


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How does CEMswell work:

On contact with water CEMswell is capable of swelling up to four times its own volume and under conditions of confinement will mould itself to the surrounding surfaces producing a water-tight seal.

Key Features & Benefits

  • Suitable for use in both vertical and horizontal joints in prefabricated elements
  • Capable of swelling up to four times is own volume
  • Available in three different dimensions
  • Easy to install

Specification Tip for Design Professionals:
CEMswell may be specified by name or by using the following description: an extruded rubber-based compound made from butyl rubber, hydrophilic resin, polyethylene, silicone and special admixtures.

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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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