Doors > Composite doors

Composite doors

Composite doors are defined as a combination of PVC door outerframe with a door leaf of standard 44mm thickness made out of a range of materials from wood to metal and GRP.

This combination of materials can often give specifiers more choice in areas such as appearance, economy, strength or specialist performance such as disabled access, fire resistance, high security or thermal and water performance.

The Sheerframe door framing system is a speciality suite of profiles designed to work with all types of 44mm non-rebated door leaf.

The outerframe profiles are thermally enhanced and come with a superior triple sealing system, making them more weather-tight and durable than traditional doors made solely from metal or wood.

Importantly, the Sheerframe door system has been tested and approved for 30 minute fire resistance to BS 476 : Part 22 (Chiltern International Report FER/FO 7024).

This fire performance approval covers doors with sidelights and includes glazed door-blades and glazed sidelights.

This speciality fire performance is unique to the Sheerframe range.

Technical information

Composition

Five chamber outerframe sections extruded from Sheerblend calcium organic impact modified PVC complying with BS EN 12608.

Appearance

A smooth white surface, various woodgrains or coloured finishes. Profiles have a chamfered edge to match traditional sightlines.

Size

Door frames are manufactured to customer specification. Maximum recommended size for individual doors is 1000mmW x 2300mmH. For all queries regarding size, range, design and function please contact L.B. Plastics' Specifier Support Department.

Fittings and Hardware

The frame system has been designed to incorporate multipoint security locking systems as standard.

Reinforcing

Reinforcing is to be applied in accordance with the relevant Sheerframe manufacturing manual, including the option of Thermlock, the thermally enhanced reinforcer.

Maintenance

Refer to door blade manufacturers' recommendations. Composite door framing can be either 60mm or 70mm deep and combine a variety of proprietary low thresholds or be welded four sides with smaller or standard frames at the bottom.