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Building Envelope Trisobuild® roof systems

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Trisobuild® roof systems

An attractive and economic range of steel roof profiles to meet the aesthetic requirements of the designer.

Trisobuild® systems comprise of a pre-finished steel trapezoidal liner profile, a spacer system, an insulation layer and a Colorcoat® pre-finished steel external weathering profile. The wide range of profiles offer total design flexibility.

Trisobuild systems have excellent sustainability credentials, for example they are all certified to BES 6001, the BRE responsible sourcing standard. The system can also boast low levels of air permeability and good thermal performance over the life of the building, which is due to the quality of components used and proven performance. This reduces energy costs, carbon emission rates and facilitates compliance with Building Regulations.

To download our BIM objects for this product group, please click on the “Download BIM Objects” tab below.

  • The Colorcoat® pre-finished steel products that our roof profiles are manufactured from have been tested in accordance with BS EN 14782 to provide the specifier with the peace of mind of specification declarations and that the components meet the legal requirements set out in the Construction Products Regulations (CPR) and are affixed with a CE mark.
  • Easily handled on site without specialist mechanical equipment, due to its lightweight components. This is important on sites with limited access.
  • Loss Prevention Certification Board (LPCB) approval to LPS 1181 part 1 for fire performance, helps to lower insurance premiums.
  • Fire resistance performance of up to 60 minutes insulation and 4 hours integrity are achievable, with standard installation methods.
  • Full traceability of all component materials and certified ‘very good’ to BRE’s responsible sourcing standard BES 6001.
  • Certification to BES 6001 provides independent evidence of our corporate responsibility, and helps increase credits under the Responsible Sourcing of Materials section of BREEAM.
  • An Environmental Product Declaration (EPD) is available for all the Trisobuild® system solutions.
  • Manufactured in factory conditions operating to quality management standard BS EN ISO 9001:2008 and environmental management standard BS EN ISO 14001: 2004.

Roof profile range

Profile Material
and
available
finish		 Gauge
(mm)		 Weight
(kg/m2)		 Max. load for a 1.8m span Max.
length
(mm)		 Min.
convex
self
curve
(mm)		 Min.
factory
curve
(mm*)		 Min.
roof
pitch
Imposed load (kN/m2) Wind suction load (kN/m2)
Single
span		 Double
span		 Multi
span		 Single
span		 Double
span		 Multi
span
131/2/3 Steel
(H, HDS, P, LG & Z)		 0.7 6.90 0.37 0.99 0.99 0.65 1.20 1.46 8000 30 N/A 10
R32 Steel
(H, HDS, P, LG & Z)		 0.7 6.76 1.38 1.24 1.50 1.47 1.75 2.18 16000 40 400 4
Aluminium
(MF, SA & CA)		 0.9 2.99 0.60 1.18 1.42 0.90 1.59 1.98 16000 40 1000 4
R40 Steel
(H, HDS, P, LG & Z)		 0.7 6.76 1.22 0.90 1.09 1.49 1.30 1.62 16000 40 400 4
R46 Steel
(H, HDS, P, LG & Z)		 0.7 7.36 3.01 1.82 2.15 3.87 4.09 5.10 16000 55 400 4
Aluminium
(MF, SA & CA)		 0.9 3.25 1.74 1.63 1.92 2.31 3.61 4.51 16000 55 1000 4
R60S Steel
(H, HDS)		 0.7 7.24 3.56 2.07 2.45 4.17 4.28 5.33 13000 60 N/A 4

Key:

H – Colorcoat HPS200 Ultra®
HDS - Colorcoat HPS200 Ultra® double sided
P – Colorcoat Prisma®
LG – Colorcoat® LG
Z – Architectural polyester
MF – Mill finish aluminium
SA – Stucco embossed aluminium**
CA – Pre painted aluminium**

*   Measured to inside face.
**  Subject to minimum order quantities.

Profile manufacturing tolerance
Cover width (mm) ±5
Squareness (mm) <5% of cover width
Length (mm) <3m +10, -5
Length (mm) >3m +20, -5
Tolerance is in accordance with BS EN 14782

General reference
All measurements throughout this brochure are referenced in mm unless stated otherwise. Technical illustrations are not to scale.

Load/span figures
The load/span information in the table below is based on a total load of 1.20kN/m2 and a deflection limit of L/200 and should be used as a guide only. Our full load span tables are available for download below. If you have any further questions please do not hesitate to contact our Technical Team.

Curving
Although the self curve minimum values shown have been chosen with aesthetics in mind some stress marking may be present in the profile trough. Self curved panel ends laps will ‘bird mouth’ slightly, therefore long sheet lengths are recommended to reduce the number of end laps. The factory curved data relates to a single convex curve. Information regarding double or wave curves please contact the technical department.

Platinum® Plus provides a complete building envelope solution guaranteed for up to 30 years. Designed in collaboration with our innovative supply chain of leading component manufacturers, our comprehensive portfolios of high quality products are fully integrated to provide the widest range of roofing and cladding systems.

The Platinum Plus system guarantee includes, amongst others, the following components:

  • Trisobuild® systems roof profile in Colorcoat HPS200 Ultra® or Colorcoat Prisma® pre-finished steel.
  • Trisobuild® systems liner profile.
  • Stainless steel fixings.
  • Roof lights.
  • Sealants.
  • Fillers.
  • Flashings and gutters.
  • Fall arrest systems.

The guarantee is offered directly to building owners, giving a direct link back to Tata Steel as the one point of contact.

For full details of our approved components please contact our technical team on +44 (0) 1244 892199.

To ensure that the building envelope will perform as required by the client, we work with specifiers to tailor a specification that considers the interactions of the components and how they impact the building design and performance. We will then provide a detailed Platinum Plus specification for use within the project tender package, together with a list of recommended installation contractors.

To guarantee the quality of components used on your building, our team of technical construction experts will visit the site to check for compliance to specification, reducing the risk of any issues arising in the future. Once the project is completed the installer will be required to apply for the guarantee using the supplied forms included in the specification document. Tata Steel will then issue the Platinum Plus guarantee directly to the building owner.

How to raise a specification?

The Platinum Plus system guarantee needs to be registered with the specifier prior to the tender package being distributed. Please contact our technical team so that we can help you to guarantee the longevity of your building on +44 (0) 1244 892199.

Thermal performance

Trisobuild® systems comply with the Building Regulations (Approved Document Part L2 – England Wales & Technical Handbook 6 – Scotland). All quoted system U-values and construction ‘psi’ and f values have been computer modelled in accordance with EN ISO 10211 as stated in MCRMA Technical Note 14 by trained and experienced technical engineers.

Fire performance

All Trisobuild systems when used as a roof achieve 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) or are “deemed to satisfy without the need for testing” in accordance with Commission Decision 200/553/EC.

The Colorcoat® pre-finished steel products used within the Trisobuild system meet the requirements the Building Regulations Approved Document B for internal and external surfaces.

Trisobuild systems can also offer a Grade EXT-B and EXT-A approval by the LPCB together with fire resistance of up to 60 minutes insulation and 4 hours integrity.

Trisobuild® systems can offer a wide variety of sound reduction and sound absorption solutions, using variations in liner and insulation specification.

Many assemblies have been tested through independent acoustic laboratories. We have further test data and the ability to offer predicted performance ratings using software developed by the Department of Applied Acoustics, University of Salford and the Metal Cladding and Roofing Manufacturers Association (MCRMA).

Please contact us and provide details of your requirements to the technical department and our engineers will work with you to develop a solution to achieve the performance levels necessary.

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:

  • Detail design.
  • Wind and snow loading.
  • U-value calculations.
  • Load span checks.
  • Acoustic SRI predictions.
  • Specification writing.
  • 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:

  • Structural roof deck in construction
  • Composite floor deck in construction
  • Sustainable steel cladding refurbishment solutions
  • Factory tour of Insulated panel lines

To request a CPD seminar please click here.

Trisobuild Roof Systems
Trisobuild Roof Systems with walkable Liner
Trisobuild Sound Absorbtion Roof Systems

Product Downloads

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