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

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  • 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.
Used over basecoat in conjunction with one of our topcoats.
Benx glass fibre reinforcement mesh is used to add extra strength and impact resistance to basecoats.
Used to reinforce and level the wall, used in combination with reinforcement mesh.
Insulation products for walls, roofs and floors We supply three key types for both EWI and Rainscreen Cladding Systems
Designed to protect the building void between the inner and outer facade elements.
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