Keyfix

The NCCTL is for use in an exterior masonry skin in conjunction with a non-masonry inner leaf such as a steel frame system, the NCCTL is a highly efficient and practical solution to the challenge of non-combustible cavity detailing. In buildings over 11m in height, Document B prevents the use of plastic DPCs, galvanised lintels cannot be used without a DPC, as the DPC protects the galvanised surface against attack from chemicals present within mortars etc. Stainless steel trays cannot be used with galvanised lintels due to galvanic corrosion caused by reactions between dissimilar materials.

This pdf document provides all the Technical data you need to make an informed decision about this product.

Cavity Trays should be installed as close as possible to item being protected or within a max. of 225mm.

Lintels should be installed with a minimum end bearing of 150mm taking into account the positioning of the lintel’s Stop Ends. The lintel should be bedded in mortar and levelled along its length and across its width.

The Keyfix Non-combustible Stainless Steel Weep (NCW) is manufactured from Grade 304 Stainless Steel which holds an A1 Non-combustible Fire Rating. Its unique design compliments the Keyfix Non-combustible Cavity Tray Systems for perp joint adjustability, but can equally be installed over any stainless steel component, such as Lintels or Masonry Support. Unlike weeps manufactured from other metals, the Keyfix Non-combustible Weep will not suffer from electrolytic corrosion associated with the use of dissimilar metals in a wet environment in conjunction with stainless steel. Keyfix Non-combustible Stainless Steel Weeps can be specified for use in 102.5mm and 215mm wide masonry skins.

Keyfix is setting new standards in the delivery of non-combustible cavity systems for projects requiring Document B compliance. In buildings utilising steel frame systems in the external cavity, the innovative Keyfix Non-combustible Cavity Tray System is a practical solution to provide protection over lintels, masonry supports, soffit systems and other elements in the cavity such as fire barriers.

The Keyfix non combustible range of products provides Document B compliant, Class A1, non-combustible cavity protection in buildings utilising steel frame systems.

This pdf document provides all the specification data you need to make an informed decision about this product.

Designed to work with majority of Frame Cramps and Type 1 Ties. The Keyfix Non-combustible Insulation Retaining Disc (NCRD) has a bespoke patented spring loaded action, which clamps the NCRD to the main body of the wall tie. The clamping action enables the disc to slide along the tie to retain the insulation in its required position.