Insulated, secret-fix, flat panel for a modern architectural appearance
Trimapanel® micro-rib is an insulated, secret-fix, flat architectural wall-cladding panel that is quick and easy to install for fast build times. Available in 70mm, 90mm and 120mm insulation thicknesses and bespoke lengths up to 12m to minimise waste and provide U-values down to 0.17W/m2K.
The range of sizes, shapes, and colours, and the extensive fabrication options, offers a design flexibility that enables architects to create unique and modern design solutions including vertical and horizontal panel installation. The unique secret-fix joint design allows primary fixings to be hidden from view and, together with the micro-rib profile, provides flat external aesthetics.
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Unique secret-fix joint design allows primary fixings to be hidden from view and, together with the micro-rib profile, provides flat external aesthetics.
Flexible design allows vertical and horizontal panel installation.
Available with a wide range of flashing options, ancillaries, integrated window, and fabricated corner and curved panel options.
Independent product verification for risk free specification
Third party validation of high standards of quality, thermal performance, fire safety, acoustic performance, air-tightness, water penetration and environmental credentials.
Approved to FM Class 4880 and 4881 to an unlimited wall height.
LPCB (Loss Prevention Certification Board) approval to LPS 1181 Part 1 helps reduce insurance premiums and assures reaction to fire performance.
Fire resistance performance of 15 mins insulation and 4 hours integrity achievable with enhanced fixing methods.
Manufactured in factory conditions operating to quality management standard BS EN ISO 9001:2015, environmental management standard BS EN ISO 14001: 2015 and occupational health and safety management scheme BS EN ISO 18001:2007.
Product specification and performance in accordance with BS EN 14509, European Product Standard for CE Marking.
Excellent sustainability credentials
Lower air permeability of the system reduces energy costs, carbon emission rates and facilitates compliance with Building Regulations (Part L2 & TH 6).
Full traceability of all component materials and certified ‘very good’ to BRE’s responsible sourcing standard BES 6001.
Available with Platinum® Plus system guarantee of up to 30 years, covering a pre-approved range of reputable, high-end components.
Colorcoat HPS200 Ultra® or Colorcoat Prisma® pre-finished steel used as standard, offering a wide range of colours and long-term performance for up to 40 years with the Confidex® Guarantee.
Basic technical data
70, 90, 120
Maximum length (mm)
Minimum length (mm)
Weight based on thickness in mm (kg/m2)
*Panels ordered below the minimum on-line length will require off-line cutting and will be subject to a surcharge.
Panel manufacturing tolerances
(L = length of measurement between high points)
For L = 200mm, 0.6
For L = 400mm, 1.0
For L > 700mm, 1.5
Cover width (mm)
Length (mm) < 3m
Length (mm) > 3m
Tolerance is in accordance with BS EN 14509
Our Platinum® Plus system guarantee offers coverage for up to 30 years. Simply contact us to register your requirements and we will create your specification and support you from design to completion – including those all-important final checks during installation.
Platinum® Plus incorporates only the highest quality components that are designed to do what they say but also provide you with unrivalled choice and flexibility in the specification of your building envelope.The many benefits and reassurance it provides is what sets it apart from all other guarantees, making it the number one choice for complete peace of mind to truly lower the cost of ownership throughout the life of the building.
The Platinum Plus system guarantee needs to be registered with the specifier prior to the tender package being distributed. To find out more click here, alternatively please contact our technical team so that we can help you to guarantee the longevity of your building on +44 (0) 1244 892199.
The Trimapanel® micro-rib system complies with the minimum requirements of the Conservation of Fuel and Power sections of the Building Regulations, Approved Document Part L2, England and Wales and Technical Handbook – Scotland. The panel construction offers highly consistent insulation performance, and the site-formed junctions provide a practical and effective method of ensuring good thermal performance.
*Tata Steel figures computer modelled in accordance with EN ISO 10211, as stated in MCRMA Technical Note 14.
The Trimapanel® micro-rib system has been tested to LPS1181-1 and is LPCB approved to both Grades EXT-B and EXT-A. Fire resistance performance of 15 mins insulation and 4 hours integrity is also achievable with enhance fixing and methods, contact the technical department for details. The internal surface of the panel complies with Class ‘O’ in accordance with the Building Regulations when tested to BS 476 Parts 6 & 7 and also achieves a Class B s2 rating in accordance with EN 13501-1.
The acoustic performance of the Trimapanel® micro-rib 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 below are based on a 70mm core.
SRI Values (dB)*
SRI Values (dB)*
Weighted S.R.I Rw = 28.9dB
*The predicted sound reduction index values should only be used to provide guidance for preliminary design and/or appraisal of cladding systems.
Our dedicated building envelope technical team are available to provide support and advice on the best product for your project. They are on hand to help with:
Wind loading calculations.
Load span checks.
Acoustic SRI predictions.
Advice on meeting Building Regulations, maximising BREEAM credits.
Assistance with SBEM.
Condensation risk analysis.
Assistance in product testing.
Inhouse CPD seminars - Primarily aimed at engineers and architects, these free seminars last around 50 minutes, ending with a question & answer session and are delivered by our experienced regional teams. Topics include:
The DNA Profiler has been designed to allow you to access Tata Steel’s product information (3d parametric objects & data) how you want, when you want, to the level of detail you want, in the format you want.