Quantum Building Supplies

Cavity Closers

PVC-U cavity closers with mineral wool insulation offer either 30 or 60-minute fire integrity. They can be used in conjunction with any window or door material or system and are suitable for second fix applications and timber frame installation, the economical way to achieve building regulations compliance.

Quantum stock a range of the popular “Dacatie Supafix” Fire rated closers, but can also supply the Kingspan range of closers quickly and easily to your site.


Dacatie Supafix

The rigid PVC-U profile encloses a core of CFC-free EPS insulation which forms a continuous insulated cavity closer preventing cold bridging. Supafix, available from Quantum, can be used with all types of door and window openings. These cavity closers overcome the traditional difficulties of closing cavities at wall openings by providing a simple and efficient solution to thermal bridging. Primarily designed for second fix applications and can be simply cut to length and push fitted into the cavity after the window or door opening has been made thus eliminating the need for cut blocks, bricks or special reveal blocks.

Supafix is available in a range of sizes to fit cavity widths from 50mm – 100mm, with sufficient design flexibility to tolerate rogue cavity widths, thus reducing time and cost on-site.


Kingspan Thermabate Cavity Closer

A PVC–U extrusion with a fibre-free, rigid thermoset insulation core that maintains continuous insulation around window and door openings. It is suitable for use with timber, metal or PVC window frames.

Kingspan Kooltherm Cavity Closer

Kingspan Kooltherm Cavity Closer is a high performance uPVC extrusion with a premium performance fibre-free rigid thermoset phenolic core, for use in England and Wales only. It provides a simple and efficient method of closing cavities around openings in masonry cavity walls, and has a thermal conductivity of 0.021 W/mK.

For further information on Cavity Closers, call us today on 01534 610500 or email sales@quantum.je

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