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Cavity Closing Solution

Like all Sheerframe products, the profiles are calcium organic stabilized and are completely lead free and manufactured under the Environmental Standard EN ISO 14001.
The profiles can be mechanically jointed due to the unique corner moldings making it the fastest fit system on the market. For those fabricators wanting to weld the cavity closers we can supply designated weld blocks
The Sheerframe cavity closer system design ensures that the latest ACD requirements for a thermal resistance path to IP8/08 between window and cavity of 0.45m²K/W is achieved without the need for insulation

  • The Sheerframe cavity closers incorporates an clever design feature of multiple air pockets at the key connection between window and closer.This sealed cavity insulated zone ensures hat the latest ACD requirement for a minimum thermal resistance path to IP8/08 between window and cavity of 0.45m²K/W is achieved which avoids cold bridging.
  • This excellent performance is achieved without the need for polyisocyanurate or expanded polystyrene foam inserts.
  • Apart from the reduction in time and materials achieved by this design it also means that recycling the closer at end of life is very easy as there are no incompatible materials linked together inside to be removed.
  • Sheerframe Cavity Closer is made entirely of recycled PVC saving valuable resources and is the simplest of all closers to recycle again.
  • Suitability for both flush and checked reveals. To prepare it for checked reveals we have the clip-in adaptor NB021.
  • As well as the adaptor for checked reveals we also have an adaptor for increasing the closer widths (NB176). This is a 25mm adaptor which clips easily into the closer and also clips into itself if you need 150mm overall.
  • The cavity closer can be either fully welded or mechanically jointed at the corners.
  • We have created a fantastic corner moulding, which combines tremendous corner strength with a rapid assembly friction fit.

COMPONENTS (all dimensions in mm)

Sheerframe sub-frame Fabrication