Cavity closers are used to eliminate damp and cold bridging around doors, windows and cills by providing an effective DPC and thermal barrier between frame, inner and outer wall leaf. They are available as either polystyrene insulation or as an extruded polystyrene where a reduced thermal conductivity is required or as a fire rated closer where a fire rating of up to one hour is specified.
Our cavity closers utilise a rigid profile extrusion which allow all the cavity closer in the range to be used as a first or second fix option. Cavity closer is available in varying widths to suit most requirements but can also be easily trimmed on site if required. Standard sizes are 50, 65, 75, 85, 90 + 100mm in width and 2400mm in length. Wider sections are available upon request.
Simply establish the cavity width and select the nearest available section size which is equal or larger to ensure the cavity can be fully closed. The compressible nature of the insulation material is used to create a friction fit in the cavity. Joints are achieved by mitre cutting the closer profile to allow the downward cut to run away from the jamb.