Keyfix non-combustible cavity solutions meet updated Building Regulations.

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With the new planning requirements on fire safety affecting high-rise residential buildings, the importance of considering fire safe design at the earliest stage of a project’s development has once again come under the spotlight. The increasing requirement for non-combustible materials for buildings over 18 metres tall has led to the development of Keyfix’s unique range of external cavity wall solutions, which hold an A1 fire rating and are fully compliant to Building Regulations Approved Document B (ADB).

As a result of a review of fire safety following the Grenfell tower tragedy, the updated Building Regulations prohibit the use of combustible materials within the external cavities of buildings over 18 metres in height. In addition, new planning requirements for high-rise residential buildings, referred to as Planning Gateway One, came into force on August 1 and require fire safety to be considered at the earliest stages of planning. To address these changes, Keyfix consulted and worked with industry leaders to develop a unique non-combustible system which meets the needs of regulators, insurers, warranty providers, developers and installers.


CPD webinar series
For architects and specifiers wanting to gain a better understanding of the technical challenges of designing and constructing masonry facades for buildings that need to conform to new regulations around non-combustible building materials, Keyfix are hosting a weekly series of free CPD webinars. Entitled ‘Solving the Non-combustible Challenge with Keyfix Cavity Tray Systems’, the webinar series will be hosted by Kieran Coyle, Keyfix Technical Sales Manager. They will take place on Wednesdays at 1pm beginning on 1 September and will run until 27 October.

Unique non-combustible system
The Keyfix range of ADB (Approved Document B) compliant solutions includes a Non-combustible Cavity Tray (NCCT) and a Non-combustible Cavity Tray Lintel (NCCTL). These innovative products offer a practical solution to provide watertight and fire resistant Damp Proof Course (DPC) protection over lintels, masonry supports, soffit systems and other elements in the cavity, such as fire barriers. The range is completed with a Non-combustible Retaining Disc (NCRD) which works with all standard Type 1 masonry to masonry wall ties, Non-Combustible Weep Vents and a Non-Combustible Damp Proof Course (NCDPC).


Manufactured using Class A1 non-combustible stainless steel, the Keyfix Non-combustible Cavity Tray (NCCT) is a ‘Fix & Forget’ solution, featuring a self-supporting single-piece tray that clips together for fast and easy installation. No additional fixings, sealants or onsite fabrication are required by the installer; therefore installation of the trays will not impede the speed of bricklaying when compared to traditional DPC. Completely self-supporting, the Keyfix NCCT system is installed in the outer leaf with no connection with the inner skin and therefore does not create a thermal bridge and eliminates all differential movement issues.

The system has been developed to meet the practical needs of brickwork contractors and requires no additional specialist skills on-site. The component range also includes the Keyfix Non-combustible Retaining Disc (NCRD) which has been designed to retain insulation on all Type 1 masonry to masonry Wall ties and has a unique patented spring loaded action, which clamps the stainless steel insulation retaining disc to the main body of the wall tie.

Reflecting the system’s superior design and performance credentials, it is listed on the NHBC ‘Accepts list’, and is approved by both Premier Guarantee and LABC following their comprehensive review of innovative products and systems.

Contact Details
To book a place on the CPD webinar or for more information click Solving the Non-combustible Challenge with Keyfix Cavity Tray Systems.