Building Envelope Colorcoat Urban®

Colorcoat Urban®

Rigorously tested to guarantee performance in different conditions

The Colorcoat Urban® standing seam system is designed for roofs and walls. The system includes the innovative Urban Seam® profile, ideal for houses, apartments, public and commercial buildings, schools and sports pavilions. Its inherent light weight and strength make it ideal for new build, refurbishment, temporary buildings and over-roofing applications.

Available in a range of colours designed to blend harmoniously with the landscape the interlocking profiles of the standing seam profile provides an aesthetic visual impact with uninterrupted lines.

Colorcoat Urban® is exceptionally durable, produced to rigorous testing to guarantee its performance in different conditions for up to 40 years.

Colorcoat Urban® is Tata Steel’s innovative, quick fit, standing seam roof and wall system, ideal for residential and commercial projects

Manufactured off-site and supplied as a kit of parts, it delivers modern aesthetics with eco-credentials. It is available in a range of colours designed to blend with the landscape and comes with guaranteed performance for up to 40 years on roof pitches as low as 5°

Product benefits:

  • Available in two widths, 514mm and 305mm.
  • Seam height 25mm.
  • Roof pitches as low as 5° can be achieved.
  • Colorcoat Urban® matt colour range specifically designed for the urban fabric.
  • Quick fit system developed to offer easy and consistent installation.
  • Secret-fix system offers invisible fixing.
  • Guaranteed to look good and perform well for up to 40 years on roof pitches as low as 5°.
  • Simple integration of renewable technologies to include photovoltaics, solar thermal and passive solar heat collectors and items such as roof lights and SVPs.
  • Backed by independent testing and BBA certification.
  • Whole-life cost system requiring little ongoing maintenance required.
 Mono pitch roof (free standing)Duo ridgeLean-to (extension)
Panel width 514mm and 305mm 514mm and 305mm 514mm and 305mm
Panel height 25mm 25mm 25mm
Panel length max 12.5m max 12.5m max 12.5m
Panel gauge Urban Seam 0.7mm nominal Urban Seam 0.7mm nominal Urban Seam 0.7mm nominal
Specification 514mm most roof applications.
305mm better resistance to wind uplift.
514mm most roof applications.
305mm better resistance to wind uplift.
514mm most roof applications.
305mm better resistance to wind uplift.
Joining detail Available for rafter lengths over 12.5m Available for rafter lengths over 12.5m Available for rafter lengths over 12.5m
Fixings Secret-fix Secret-fix Secret-fix
Eave detail Creates a sharp edge.
Provides a drip for rainwater run-off.
Creates a sharp edge.
Provides a drip for rainwater run-off.
Creates a sharp edge.
Provides a drip for rainwater run-off.
Verge Roof side. Overhangs outside face of wall.
Creates drip and nice finish.
Roof side. Overhangs outside face of wall.
Creates drip and nice finish.
Roof side. Overhangs outside face of wall.
Creates drip and nice finish.
Ridge profile Mono ridge Standard Duo and Large Duo Top abutment
End caps Left and right hand Standard Duo and Large Duo Bespoke
Backing plate Mono ridge backing plate Clips onto Z bars Fixed to structurally sound exterior wall
Ventilated Available on request Available on request Available on request

Colorcoat Urban® comes with third party validation to the highest standards on quality, product performance, fire safety, and environmental credentials.

CharacteristicPerformance
Yield strength 0.7mm sheet - 220 kN/mm2
Tensile strength 0.7mm sheet - 300 kN/mm2
Elognation 0.7mm sheet - 20%
Water permeability Impermeable
Dimensional change 12 x 10-6 k-1
Water vapour and air permeability Impermeable
Release of dangerous substances Not classified as dangerous
Durability Coating S220 + ZA255
  • Backed by independent testing and BBA certification. Download our roof and wall panel certificate from our product downloads.
  • Rigorous testing in different conditions gives confidence in durability
  • Certified ‘Very Good’ to BREs BES 6001 responsible sourcing standard
  • Meets Class 0 Building Regulations for the UK when used as part of a roof cladding system
  • When used as part of a roof cladding system, can achieve a Class AA performance rating when tested to BS476 Part 3 1958

The Urban Seam® panel is a fully supported roof panel, comprising an outer skin profiled from 0.7mm thick, galvalloy treated, grade S220GD steel sheets to BS EN 10346: 2009. The sheet is treated with a 200 micron coating on the exposed face and a 10 micron polyester coating on the reverse face.

Wind Uplift deflection values
Specification of the 305mm/514mm wide panel is dependant on location, wall height, storey height and roof pitch. A structural engineer should complete a wind uplift calculation for your specific area before making any final decision. Please note the table below is for guidance only:

Roof pitch (degree) and wallNo. storeysWind speed V2Panel width 305mmPanel width 514mm
(5-9) <3 ≥25 Y N
(5-9) 4 - 6 ≥25 Y N
(5-9) <3 <25 Y Y
(5-9) 4 - 6 <25 Y N
(≥10) <3 ≥25 Y Y
(≥10) 4 - 6 ≥25 Y N
(≥10) <3 <25 Y Y
(≥10) 4 - 6 <25 Y Y

 

Load Span Tables
All load span calculations should be calculated by a structural engineer for the project. All load span information is based on the boarded structure on standard 600mm or 400mm centres a structural engineer should be consulted for any further information.

Uplift wind deflection values (KN/m²)

 10mm deflection20mm deflection
305mm 3.49 6.98
514mm 0.73 1.46

Build-up examples
Urban Seam® profile is fixed to 18 mm Ply or OSB 3 board, with a separating layer of breathable membrane (15 mm board is used for SIP panels). For other board types and dimensions please contact Colorcoat Urban®. Below this, warm roof and cold roof build-ups can be accommodated. More comprehensive detailed advice on this is available from the Colorcoat Urban® team.

DoP
Under the CPR, all products used in construction must now have CE Marking. This provides clear indication that it meets the requirements of the relevant harmonised standard, and has been approved by a Notified Body to apply the CE Mark. The Urban Seam® Declaration of Performance provides information on the essential characteristics of the Urban Seam® profile and that it conforms to its declaration.

Condensation risk
In common with all metal roof constructions, there is a risk of condensation. This can arise as either interstitial condensation within the roof construction or surface condensation at thermal bridges.

To prevent condensation forming between the metal sheets and the substrate, measures should be taken to minimise water vapour reaching the OSB board by incorporating:

  • Vapour control layer in the roof construction and providing an adequate seal around ceiling.
  • Breather membrane in the roof construction to allow the air to circulate freely.
  • Adequate insulation level meeting current U-values.

Resistance to soft and hard body impact: In accordance with MOAT 43: UEAtc Directives for impact testing opaque vertical building components. Part 2.2.1: Impact from large soft bodies and  MOAT 43: UEAtc Directives for impact testing opaque vertical building components. Part 2.2.2: Hard body impacts.

In a roof and wall installation, the panel will have adequate resistance against hard and soft body impact in combination with the standard wood board build up.

Sound and Noise
The Colorcoat Urban® standing seam roof requires a substrate Ply or OSB 3 board or SIP panel, and is no noisier than standard slate, concrete or clay tile. In many cases the transfer of airborne noise is less than alternative materials.

Sound levels or loudness are expressed in decibels (dB). The decibel rating is a representation of the intensity or volume of the sound. The intensity of the sound depends on the pressure level and can be accurately quantified by a sound level meter.

When considering the acoustic performance requirements of a building there are a number of criteria to consider which include airborne noise; impact noise; internal noise reverberation; and flanking.

Fire
Colorcoat Urban® is tested against all the required fire tests.  It carries a ‘low risk’ classification and meets Class 0 requirement as defined in the Building Regulations for the UK. When used as part of a roof cladding system, the Colorcoat Urban® seam can achieve a Class AA performance rating when tested to BS 476 Part 3: 1958.

The performance of a building in a potential fire situation must be seen as a fundamental requirement and it is essential that this be considered at the initial design stage. Compliance with the Building Regulations is a major consideration for fire performance:

The focus is specifically on the building envelope and understanding how to satisfy these requirements when using Colorcoat Urban Seam® wall and roof cladding system. While the choice of building envelope materials is of key importance, it should be seen as part of an overall strategy of compliance and risk management. Where risks are high or difficult to control, more emphasis needs to be placed on the intrinsic performance of the building components.

Provisions for external surfaces of walls: Approved Document B1 specifies the performance requirements for the external surface of walls according to building height and location.

Figure 1 summarises these requirements for a range of building types and locations.

  

Approved Document B1 specifies the performance requirements for external roof coverings according to location in relation to the distance of the building from a relevant boundary. Figure 2 sets out the minimum requirements that are stated according to European EN 11875 and National BS 476 – 33.

Figure 2. Performance requirements for roof coverings

There are no restrictions on the use of roof coverings that are designated AA, AB or AC, National Class, or B ROOF (t4), European class. Roof products which meet the requirements stipulated in Commission Decision 2000/553/EC can be considered to satisfy the requirements without the need for testing.

Colorcoat Urban® roof and wall cladding systems meet all the requirements for all external roof and wall coverings.

Looking for help and advice with your designs?

The Colorcoat Urban® team of experts is available to offer the support you need and provide you with more detailed information on any of our Colorcoat Urban® range of products.

Whether you are looking for a more detailed drawing or a copy of our Specification guide contact the team on T: +44 (0) 1244 892449 or E: Colorcoaturban@tatasteel.com.

Duo ridge

Colorcoat Urban® duo ridge roof is one of the most popular designs ideal for traditional domestic buildings. The duo ridge design slopes in two different directions down from the ridge, and can be designed to suit your required style or shape.

Mono ridge

Colorcoat Urban® mono ridge roof is a single sloping free-standing surface. The mono ridge design slopes in one direction down from the ridge. It is both modern and contemporary and offers the perfect solution for new builds or additions to existing roofs.

Lean-to

Colorcoat Urban® lean-to roofs are fixed to an exterior wall of the building, providing small ground floor extensions and additional covered roofing space. The lean-to design is a simple, traditional concept which can be built entirely to suit you, as part of a new build or an extension to an existing structure.

Dormer

Colorcoat Urban® dormer roofs can be created with pitches as low as 5 degrees. Urban Seam® dormers can be designed for inclusion at construction stage or as a later addition to your build. Available to suit a wide range of shapes and sizes to suit pitched, flat or even the most difficult of dormer shapes. So versatile is the dormer that it is easily integrated with existing tiled roofs.

To obtain a no-obligation, fully itemised estimate speak with one of our Colorcoat Urban® experts

Our team are on hand to provide estimates, samples and advice on the performance and most suitable system for your project. In addition our dedicated team can provide comprehensive support at every stage of your project.

For further information contact:

General Enquiries:

T: +44 (0) 1244 892449
E: colorcoaturban@tatasteel.com

Technical Enquiries:

Aled Dafydd
T: +44 (0) 1244 892446
E: Colorcoaturban@tatasteel.com

Sales – Scotland, North West and North East England:

Ryan Wardle
T: +44 (0) 1244 892459
M: 07774 189424
E: ryan.wardle@tatasteel.com

Sales – North Wales, Midlands, East Anglia, London, Northern Ireland and Republic of Ireland:

Gordon Crichton
T: +44 (0) 1244 892455
M: 07736 899592
E: Gordon.crichton@tatasteel.com

Sales – South Wales, South East and South West:

Elen Worthington
T: +44 (0) 1244 892443
M: 07919 305281
E: elen.worthington@tatasteel.com

Our hand samples can assist in colour selection and finalising product specification.

Order samples online for Colorcoat Urban®
Please select your chosen Colorcoat Urban® colour to request samples. Or order samples by contacting the Colorcoat Urban® team on +44 (0) 1244 892449.


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