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Trisomet® Wall
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Trisomet® Wall

40 mm Panel Thickness

Tata Steel Variant:
Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

Insulated trapezoidal steel wall panel system.

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Suitable for horizontal and vertical wall cladding applications.


Trisomet® is an insulated panel manufactured as a single component suitable for horizontal or vertical wall cladding applications. As a one-fix component its consistency enables speed of installation and with a wide spaced trapezoidal steel external skin provides optimum performance for water drainage, strength and walkability. Single, double and multi span configurations are available.

Features and benefits:

  • One fix construction in panel lengths from 300 mm to 20 m to optimize the speed of installation and minimize waste for more sustainable construction.
  • Core depths from 40 to 135 mm to optimise the design solution.
  • The 135 mm core meets a U-value of 0.15 W/m²K.
  • Third party validation of high standards of quality, thermal performance, fire safety, air-tightness, water penetration and environmental credentials.
  • Approved to FM Class 4880, 4881 and 4471 to unlimited wall height.
  • LPCB (Loss Prevention Certification Board) approval to LPS 1181-1 to help reduce insurance premiums and assure reaction to fire performance.
  • Fire resistance performance of up to 30 minutes insulation and four hours integrity achievable with standard fixing and sealing methods (external side-lap stitched at maximum 300 mm centres).
  • Available with Platinum® Plus - a system guarantee for up to 30 years, that covers the durability, structural and thermal performance of all system components. The guarantee is derived from a tailored specification to suit your building function and is fully transferable on change of ownership of the building.
  • Colorcoat HPS200 Ultra® or Colorcoat Prisma® pre-finished steel used as standard, offering long-term UV and corrosion performance with the Confidex® Guarantee and providing peace of mind for up to 40 years.
  • Product specification and performance in accordance with BS EN 14509, European Product Standard for CE Marking.
  • Full traceability of all component materials and certified ‘very good’ to BRE’s responsible sourcing standard BES 6001 which helps increase credits under the Responsible Sourcing of Materials section of Building Research Establishment Environmental Assessment Method (BREEAM).
  • The PIR core has zero ozone depletion potential (ODP) and a very low global warming potential (GWP) of less than 5 to increase BREEAM credits.
  • All steel elements are 100% recyclable, without any loss of quality.

Fire performance:

LPS 1181 Grade EXT-B

Trisomet® carries Grade EXT-B and EXT-A approval by the LPCB, Certificate 460a/29. Also fire resistance performance of up to 4 hours integrity and 30 mins insulation dependant on panel thickness. These are attained using standard fixing and sealing methods (external side-lap stitched at maximum 300mm centres).

internal surface of the panel complies with a Class B s2 d0 rating in accordance with EN 13501-1.

Water penetration:

Laboratory testing shows evidence that the Trisomet® system is water-tight up to a pressure of 1200 Pa, which surpasses the relevant standards.

Pa, when tested to BS EN 12865‘Hygrothermal performance of building components and building elements’


In accordance with Building Regulations Approved Document L2 (E&W) and Scotland (Technical Handbook Section 6 Energy) tests to EN BS 12114 shows the sealed panel of air leakage as low as 0.43 m³/h/m² at an applied pressure of 50 Pa.

A practical expectation for a finished building, with effective sealing at all junctions, would be 3-5 m³/h/m². However, enhanced detailing practises on large shed buildings can realise air leakage performance figures of less than 3 m³/h/m².

General information


Wide range available.




Pre-coated steel skins/ PIR core.


To suit project requirements.



Ss_25_20_14_54 Metal insulating sandwich panel cladding systemsPrimary


H43/10 Metal insulating sandwich panel

H43/120 Metal insulating sandwich panel

Specification data - Metal insulating sandwich panel cladding systems Enhanced data

Cladding panels


Panel type

Carbon steel insulating sandwich panels

Panel fasteners

Cladding rails.

Continuity thermal insulation

PIR closed cell foam.

(CFC and HCFC free, zero ODP and GWP <5) to specification used in LPCB approval.

Product Reference


Horizontal or vertical wall panel.


Colorcoat HPS200 Ultra® pre-finished steel.

Colorcoat Prisma® pre-finished steel using Galvalloy® metallic coating.


S220 Steel.


32 mm high trapezoidal profile with a 333 mm pitch.


0.5 mm.


Colorcoat® High Reflect steel.

Colorcoat® PE 15 steel.


S220 Steel.


Lightly planked.


0.4 mm.


Panel lengths from 300 mm to 20 m.


Cover width

1000 mm.


40 mm.

Panel internal face

Complies with reaction to fire Class B-s2 in accordance with BS EN 13501-1.

Fire resistance

Contact the technical department for specification details.

30 minutes fire insulation.

240 minutes fire insulation.


As drawing.

Insert details.


0.46 W/m²K.

Bearing width


60 mm.

Impact sound reduction

Weighted SRI Rw (based on 80mm core).

28.5 dB.

Further reductions can be achieved, depending on the core thickness, external skin thickness and liner used. Consult technical literature for details.


9.23 kg/m².


For unheated buildings.

Third party certifications

  • Loss Prevention Certification Board (LPCB): Certificate: LPS1181 Part 1

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