NC-CT | Non-Combustible Cavity Tray | Construction | Products | SIDERISE

SIDERISE NC-CT | Non-Combustible Cavity Tray

The Siderise NC-CT Non-Combustible Cavity Tray has been created specifically to provide a comprehensive, compliant solution for masonry facades. Unlike similar products on the market, it comprises of a flexible aluminium cavity tray with integral non-combustible insulation, creating a single-component solution that is simple to specify and install.

  • NC-CT is rated A2-s1, d0 to EN 13501
  • BBA tested and NHBC Accepts approved
  • Meets the requirements of Approved Document B for steel framed buildings over 18m
  • Corners easily cut on-site
  • Linear application rate of up to 100m/hour (in class room tests)
  • Easily accommodates building site tolerances
  • No hot works or power tools required


This robust patent-pending and factory-engineered design not only provides reliable quality and performance but has been tested to rigorous standards such as EN 13501-1 fire classification of construction products and building elements, achieving a non-combustible A2-s1, d0 rating.

Cavity trays perform the job of a damp-proof course. They are angled to bridge the cavity in a way that directs moisture away from the inner leaf and enables it to drain externally.

This helps to prevent lingering moisture, making sure that any rain that gets through to the cavity does not reach the inner leaf. This reduces the risk of damp which can cause serious problems for buildings and occupants alike.

They can be pre-manufactured from a wide range of materials, from heavy plastic to robust stainless steel and aluminium, or foil-faced non-combustible insulation.

Siderise NC-CT Non-combustible cavity tray has been developed to provide a non-combustible cavity tray solution that can be installed with our EW systems to seal and protect external wall cavities in the event of fire and smoke in masonry constructions. It is designed to meet the requirements of Approved Document B for steel-framed buildings over 18m.

Siderise NC-CT is rated A2-s1, d0 to EN 13501 – and has been BBA tested
and NHBC approved. It is compliant with Approved Document B and can be used in buildings that stand at 18m and over.


For Technical Support with this Siderise Insulation solution please contact:

T:+44 (0) 1656 335819