Siderise ‘CT’ Cavity Tray has been specially developed to meet the new requirements of Approved Document B for relevant buildings, where the use of traditional combustible cavity trays is no longer permitted above 18m in steel-framed structures (SFS).
Siderise 'CT' is classified 'A2-s1, d0' to EN 13501-1 (Classification report available on request), and is therefore compliant for use with steel-framed structures (SFS) in relevant buildings above 18m.
As with traditional cavity trays, Siderise 'CT' provides an essential damp proof course (DPC) that crosses the cavity of a masonry wall to direct water out of the external face of the wall and to prevent dampness from permeating the internal skin of a wall. Siderise 'CT' is a lightweight solution that is simple to install and provides a durable solution to the problem of damp penetration below the roofline of a masonry structure. It is easy to handle and can be installed on-site without any specialist equipment.
The product has a running length of 1m with a 50mm overlap joint, it is manufactured to 150mm triangular sections with an additional 50mm ‘flange’ to the back wall. The width is then manufactured to suit the cavity size. A typical cavity width accommodated for the product is between 100mm to 350mm (for other cavities please contact Technical Services). Drainage is facilitated via weep holes as normal.
Siderise 'CT' Cavity Tray’s design features include dual aluminium skins to produce a secondary defence against moisture ingress. The aluminium faces are robust and durable to cope with site installation whilst ensuring that the water permeability is not compromised. The same unique formulation of stonewool is used in the central core as is used for all Siderise® fire barriers to maintain continuity of performance.
Classified 'A2-s1, d0' to EN 13501-1
Thermal conductivity: λ90/90 = 0.034 W/m.K (EN 12667)
Table 1 : Product Properties
|Reaction to Fire||Classification to EN 13501-1: 'A2-s1, d0' 26/11/2021, Warrington|
|Water flow||BBA Test Method (Test Report T964369) 14/04/2021, Watford – Pass|
|Shear strength||EN 1052-4 : 2000, 28/05/2021 Lucideon, Stoke-on-Trent – Pass|
|Flexural bond strength||DD 86-1 :1983, 20/05/2021 Lucideon, Stoke-on-Trent - Pass|
|Heat Aging||BBA Test Method (Test Report T964369) 16/06/2021, Watford – Pass|
|Adhesion to mortar||BBA Test Method (Test Report T964369) 16/06/2021, Watford – Pass|
|Watertightness – joints||BBA Test Method (Test Report T964369) 16/06/2021, Watford – Pass|
|Bond Strength – joints||EN 12317-2 : 2010 16/06/2021, BBA, Watford – Pass|
|Chemical||The base stone wool is chemically inert. An aqueous extract of the rock wool is neutral (pH7) or slightly alkaline. Resistant to most acids and weak alkaline solutions.|
|Biological||Vermin and rot proof and does not encourage the growth of fungi, moulds or bacteria.|
|Effect of water||Non-hygroscopic. Unaffected by humid atmosphere. Must be suitably damp proofed in accordance with codes of practice for masonry constructions.|
|Compatibility||Compatible with all normal building materials.|
|Maintenance||No maintenance required unless disturbed.|
|Handling||Easy to handle but should be treated with due care to ensure material integrity and shape are maintained. See Safety Data Sheet 7.1.|
Siderise offers a number of ancillary products to complement CT, these include:
Table 2: Stop End Sizes
|Void Size (mm)||Stop End Length(mm)|
|100 – 200||205|
|201 – 350||305|
Table 3: Physical Characteristics
|Manufacturer and Product Name||Siderise CT- Cavity Tray|
|Product Type||Cavity Tray|
|Description||See 'Product Description' section|
|Application/Use||See 'Application' section|
|Material||See Safety Data Sheet section 3.1|
|Weight||0.79-2.75Kg as per 100-350mm wide voids|
|Finish /Colour||Grey with silver shades aluminium wrapped faces with black taped lower lip. Solid, green-brown on exposed side faces.|
|Packaging||Packaged in cartons|
|Pack Size||Carton Size: Length-1070mm, Width-600mm, Depth-400mm(maximum)|
|Unit of measure||millimetre (mm)|
|Chemical properties/Safety data sheets||See Safety Data Sheet section 3.1|
|Size/dimensions (product & installation spatial requirement)||Length of 1m, 50mm overlap joint, manufactured to 150mm triangular sections with an additional 50mm ‘flange’ to the back wall. Typical cavity width between 100mm - 350mm covered.|
|Shelf life||12 Months; Store in dry conditions and protect from mechanical damage.|
Siderise CT is environmentally friendly:
Siderise 'CT' is composed predominantly of stonewool and soft tempered aluminium, both of which are suitable for recycling.
The following information is available for download via the website:
For technical advice or support please contact: email@example.com
For Installation Training or Site Inspections please contact: firstname.lastname@example.org
The information in this datasheet is believed to be accurate at the date of publication. Siderise has a policy of continuous product improvement and reserves the right to alter or amend the specifications of products without prior notice. Siderise does not accept responsibility for the consequences of using the products described outside of the recommendations within this datasheet. Expert advice should be sought where there is any doubt about the correct specification or installation of Siderise products.
Published Version: CT_v1_06 _20230213_1252