Non-combustible Cavity Tray System (NCCT)

Austenitic stainless steel, grade 304 to BS EN 10088-2.

Minimum of 50 mm.

200–2500 mm.

Guidance for specification option:

Insert requirements.

Brick trays.

Guidance for specification option:

Brick Trays are modular units which are fabricated to suit brick coursing.

Keyfix manufacture trays in half brick increments from a one Brick Tray to a 10 Brick Tray to suit any brick size or bond pattern.

Brick Trays are specified depending on the run of brickwork, taking into account the additional adjustability available when overlapping Corner Units.

Each Brick Tray is formed with an integral Stop End at each end, which prevents moisture travelling horizontally and ensures it can only escape tray via a weep. Each Brick Tray also incorporates a patented indented surface which provides a physical key within mortar, eliminating the risk of slip plane developing.

Indented surface also removes any concern surrounding rising damp and removes the need for additional DPC associated with perforated Cavity Tray systems.

Jointing piece.

Guidance for specification option:

A Jointing Piece is used to join together two abutting Brick Trays where Stop Ends abut each other, therefore allowing the NCCT system to remain continuous over a run of brickwork.

By locating Brick Trays into the Lower Clip pre-fitted to the Jointing Piece, this provides an overlap that will drain any moisture present between the abutting Stop Ends.

The perp joint between two abutting Brick Tray Stop Ends must be fully filled with mortar.

Keyfix external corner.

Guidance for specification option:

Corner Units are required on every project in order for the Non-combustible Cavity Tray System to continue around corners on a building or at a brick return reveal.

The length of the Corner Units allow for adjoining Brick Trays to overlap by ½ Brick to 1 ½ Bricks, therefore accommodating varying brick coursing or cut brick dimensions.

Keyfix provide a full range of prefabricated Corner Units to suit external and internal returns.

Bespoke corner angles are also available to order at no additional cost compared to a standard Keyfix NCCT Corner Unit.

Keyfix internal corner.

Guidance for specification option:

Corner Units are required on every project in order for the Non-combustible Cavity Tray System to continue around corners on a building or at a brick return reveal.

The length of the Corner Units allow for adjoining Brick Trays to overlap by ½ Brick to 1 ½ Bricks, therefore accommodating varying brick coursing or cut brick dimensions.

Keyfix provide a full range of prefabricated Corner Units to suit external and internal returns.

Bespoke corner angles are also available to order at no additional cost compared to a standard Keyfix NCCT Corner Unit.

Keyfix LH reveal corner.

Guidance for specification option:

Corner Units are required on every project in order for the Non-combustible Cavity Tray System to continue around corners on a building or at a brick return reveal.

The length of the Corner Units allow for adjoining Brick Trays to overlap by ½ Brick to 1 ½ Bricks, therefore accommodating varying brick coursing or cut brick dimensions.

Keyfix provide a full range of prefabricated Corner Units to suit external and internal returns.

Bespoke corner angles are also available to order at no additional cost compared to a standard Keyfix NCCT Corner Unit.

Keyfix RH reveal corner.

Guidance for specification option:

Corner Units are required on every project in order for the Non-combustible Cavity Tray System to continue around corners on a building or at a brick return reveal.

The length of the Corner Units allow for adjoining Brick Trays to overlap by ½ Brick to 1 ½ Bricks, therefore accommodating varying brick coursing or cut brick dimensions.

Keyfix provide a full range of prefabricated Corner Units to suit external and internal returns.

Bespoke corner angles are also available to order at no additional cost compared to a standard Keyfix NCCT Corner Unit.

Ribbed overlapping joints.

Guidance for specification option:

The Keyfix NCCT system is the only Cavity Tray of its kind which does not rely on tapes, sealants or mastics and instead creates a mechanical, dry seal joint referred to as Ribbed Overlapping Joints.

This mechanical, dry seal joint is created when ribs formed by downward pressed channels within the tray profile are completely overlapped by a Brick Tray.

The use of tapes, sealants or mastics increases the possibility of onsite installation errors outside of the manufacturers control and therefore the warranty.

By eliminating the use of tapes, sealants or mastics at joints, the Ribbed Overlapping Joint gives unrivalled joint integrity lifespan and removes all installation errors associated with onsite conditions such as dust, moisture or low temperatures, which prevents “wet” joints performing, resulting in water ingress.

Pier units.

Guidance for specification option:

Pier Units are fabricated bespoke depending on project requirements so one single Non-combustible Cavity Tray piece can be used in congested locations. Such as an 890 mm pier between two openings.

Similarly to a Brick Tray, each Pier unit is finished with integral Stop Ends which ensures moisture is captured on top of tray and cannot escape unless via an intended weep.

Pier Units also include an indented surface, therefore eliminating the risk of slip plane developing in the outer skin of masonry. Indented surface also removes any concern surrounding rising damp and removes the need for additional DPC associated with perforated Cavity Tray systems.

Pier Units are available to suit from 440 to 1790 mm between two openings.

Stepped capping piece.

Guidance for specification option:

Stepped Capping Piece’s are utilized when a Jointing Piece cannot be used because of a step in the panel of brickwork and negates the requirement for a Corner Unit to suit step in brickwork.

By placing a Stepped Capping Piece over the top of the abutting Brick Tray Stop Ends, this allows the NCCT system to remain continuous over a run of brickwork while also accommodating the step in brickwork.

It is critical that the perp joint between abutting Brick Tray Stop Ends must be fully filled between and on top of Stop Ends before placing Stepped Capping Piece over the top of Stop Ends. The maximum allowable step in brickwork which can be accommodated is 50 mm.

Keyfix Non-combustible Weep (NCW).