Cavity System 1

Cavity systems are extensively used on lightweight framed structures to create a void between the cladding and the sheathed framed structure. SPSE CS systems 1 & 2 are the next generation of this solution.

Our market-leading Cavity Systems consist of Euroclass BS EN 13501 – A1 components, which are mechanically fixed back to the inner sheathing board to create the designed cavity width with either the insulation board fitted directly to the A1 fillets (CS1 system), or a secondary A1 sheathing board and insulation (CS2 system). Our A1 EWI recladding systems are supplied with a mineral top coat finish.

A proprietary base coat render is applied with a reinforcing plastic coated glass fibre mesh prior to the application of the required finishes.

Key Benefits

  • Kiwa BDA Agrément Approved
  • Accepted by all building warranty providers
  • Compliant with Approved Document B and Technical Handbook section 2
  • Minimum EuroClass Reaction to Fire classification of A2 – s1, d0
  • EuroClass A1 support system
  • Takes cladding out of the critical path by quickly weatherproofing the building
  • Low-cost cladding solution
  • Fast application
  • Tried and tested
  • Wide range of colours and finishes including brick slips
  • Easily achieves high levels of thermal performance
  • Highly durable and weather resistant


  • Cavity System 1


SpeedySlip provides the traditional appearance of a brick finished building but with technology of a lightweight acrylic or mineral brick slip finish....
Enviromin is a high-performance, cement based and polymer modified through coloured mineral thin coat render and is based on a colour fast lime bloom free...
EnviroSil is a pre-mixed, highly water repellent silicone based through colour textured finish, allowing the façade to maintain its cleanliness via the...

Earlsdon Retirement Village Case Study


As part of the phase 2 development of Earlsdon Retirement Village in Coventry, SPSenvirowall and RCM, part of the Benx Group of Companies were appointed by Vistry Group to supply its façade products for...

Cavity System 1 Case Studies

  • The Tramyard Case Study


  • The Helm Case Study


  • Earlsdon Retirement Village Case Study


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Cavity System Brochure

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Training Courses for Cavity System 1


Used to allow insulated structures to easily release excess moisture vapour into the atmosphere and keep the internal elements of wall structures dry.
Beads for a rendered façade will ensure the best finished look, ensure durability and help protect the render from water damage and cracking.
The Benx range of silicone, acrylic and mineral renders are a great way to achieve a perfect and long lasting finish.
Insulation products for walls, roofs and floors We supply three key types for both EWI and Rainscreen Cladding Systems
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