SLE Cladding Limited

Thermal performance

Water penetration

The Corus Trisomet 333 System complies with the minimum requirements of the conservation of fuel and power sections of the Building Regulations for England and Wales (PartL2) and Scotland (Technical Handbook Section 6 Energy. The panel construction offers highly consistent insulation performance, and the site-formed junctions provide a practical and effective method of ensuring good thermal performance.

In accordance with the product standard BS EN 14509, the water tightness of a system should be tested to EN 12865. The standard advises that the system should achieve water tightness to a pressure of 600 Pa for normal conditions. The Corus Trisomet 333 System is watertight up to a pressure of 1050 Pa, which far surpasses this requirement.

Thickness (mm)	U-value (W/m2K)*
40	0.46
60	0.33
80	0.25
100	0.20
* Corus Panels and Profiles computer modelled in accordance with EN ISO 10211 as stated in MCRMA Technical Note 14

Air tightness
The cladding panel and its junction details must be
airtight so that the air permeability of the building
does not exceed 10m3/h/m2 at an applied pressure
of 50 Pa, in accordance with the Building Regulations for England and Wales (Part L2) and Scotland (Technical Handbook Section 6 Energy). In laboratory tests in accordance with EN BS 12114, the sealed panel can achieve an air leakage as low as 0.37m3/h/m2

Fire Safety
The Corus Trisomet 333 System carries Grade EXT-B approval by the LPCB. The panel also achieves a Grade AA rating in accordance with BS 476-3, which tests for external surface spread of flame and fire penetration (AA is the best result achievable). The internal surface of the panel complies with Class 'O' in accordance with the Building regulations when tested to BS 476 parts 6 & 7.

To ensure the continuity and effectiveness of the air barrier the internal flashings should be fully sealed.
Particular attention should be paid to the corners of sheets, such as at roof junctions, and all junctions where pipes and ducts penetrate.
A practical expectation for a finished building would be 3-5m3/h/m2. However enhanced detailing practises on large shed buildings can realise air leakage performance figures of less than 3m3/h/m2.

Acoustic performance
The acoustic performance of the Corus Trisomet 333 System has been predicted using software developed by the Department of applied Acoustics, University of Salford, under a research contract funded by the Metal Cladding and Roofing Manufacturers Association (MCRMA). The results in the table are based on an 80mm core.

Environmental credentials
The Corus Trisomet 333 System is a sustainable solution with responsible sourcing and traceability of all component materials. The PIR insulation within the system has zero ozone depletion potential (ODP) and a global warning potential (GWP) of less than 6. Both these factors support the achievement of a high BREEAM rating.

Frequency (Hz)	SRI Values (dB)*	Frequency (Hz)	SRI Values (dB)*
100	12.0	800	27.2
125	13.6	1,000	28.9
160	15.3	1,250	30.6
200	16.9	1,600	32.5
250	18.5	2,000	34.3
315	20.2	2,500	36.0
400	21.9	3,150	35.9
500	23.6	4,000	33.8
630	25.4	5,000	31.2
Weighted S,R,I Rw = 28.5dB * The predicted sound reduction index values should only be used to provide guidance for preliminary design and/or appraisal of cladding systems.

All steel elements are 100% recyclable back into new steel products, without loss of quality. The insulation can be separated using existing scrap shredding technology, after which the materials can be recovered or recycled.

Warranties
The Corus Trisomet 333 System is available with the Corus Platinum System Warranty. As long as the panels are supplied to an approved specification and fitted by Corus Platinum System Warranty approved installers, the system is eligible foe a 25 year component warranty and up to 12 years workmanship warranty.