Elite System Guarantee

Euroclad Elite System 4 uses Euroclad's Euroseam® as an outer sheet and can be supplied in natural stucco embossed aluminium, pre-painted PVDF or ARS finish. Elite System 4 provides the flexibility needed to achieve aesthetically pleasing yet functional designs for industrial or innovative applications. It can be specified for a low pitch,barrel vault roof or used for waveforms, ski slopes, multiple radiiand multiple pitches. Rollformed tapers are available for visually stimulating designs.

Elite Systems 4, 5, 8 & 9 have LCPB & BBA Approved

Aesthetics

The benchmark standard for Aluminium standing seam roof systems that gives the most cost effective standingseam roof system for most applications, calls for a 0.9mm Plain Mill, 400mm wide profile sheet with a stucco embossed pattern. The 'Stucco' emboss is applied to the material before the rollforming of the sheet. The pattern gives a uniformed finish to the natural shiny finish of the aluminum. The plain mill finish of the aluminum weathers to dull down the reflectivity of the sheet quickly after installation. If a less reflective finish is required 'Organic Patina' finish can be used, or you can choose from the standard BS RAL colourcharts (subject to minium quantity). Where roofs are subject to high wind loadings a heavier hauage material may be required, or a narrower width sheet used.* for project specific information please contact our sales office.

 

The sheets can be formed into sinusoidal or waveform or even multiple curves in single length sheets using CNC production techniques. To achieve a CONVEX radius below 45 metres, the straight rolled profiled sheet is passed through a series of CNC controlled rollers in a curving machine. The smallest standard smooth radius possible is 5 metres. Radii smaller than 8 metres may be possible through special material selection, if you have a requirement for small radii please contact out technical office for project specific advice.

 

Standingseam Wind Load Design Limitations

Wind Loading and ultimate sheet failure - Euroseam has BBA certification and during the physical test programme for this it was identified that, for the systems fixed to steel structures, under negative (wind uplift) loading, the limiting design factor is the sheets Reaction capacity as published in the load span tables under Wind (-ve). "Reaction" is the capacity of the profile webs to support the concentrated reactions at the halters. Under test the sheets ultimate attachment strength to halter, halter to spacer and system fixings were never a failure mode (this is not applicable where the system is fixed to plywood decking, timber or other less substantial substrates etc where an additional design check of fixing pullout values is required).

 

Single Skin Applications - Wind Loading

There are a large number of possible constructions which may be classed as single skin, some of which are considered higher risk areas where there are significant additional uplift loads generated. Examples of these would be exposed eaves, ridge or verge cantilevers (not closed off by a soffit), canopies or large warehouses with a large opening at one end where vortexes can be created inside the building. Provided that care has been taken in considering the applicable loadings and the Euroseam sheet load/span capacity in the Design process it is possible to use Euroseam successfully as a single skin sheet. In all cases the critical element is that the total of all possible applicable wind loads are established when designing and that the sheet span capacity is checked against the total of these loadings using the published load/span tables Wind -ve Reaction figures.

Where there is any doubt with regard to the limitations of the loading calculations and applicable standards or a desire to be "belt & braces" in design, additional precautions may be applied such as doubling calculated loading values and introducing additional halters at risk areas in order to improve load capacity. Another option may be to create a fixed point at the risk area (for example at an exposed eaves cantilever if the ridge is not similarly exposed and a sliding ridge detail can be employed).

Condensation

Another factor to consider if Euroseam is employed in a single skin application is the potential for condensation to form on the back of the sheet. This may be dealt with primarily by adequate ventilation and is then unlikely to pose any problems. When Euroseam is used as an uninsulated cover over plywood decking, as in Elite system 8, ventilation occurs under the sheet due to halter clearance and a breather membrane is fitted over the plywood to protect it from damage from any possible condensate formed. It is detailed to drain to the eaves as an additional precaution but it is not expected that any significant condensation problems would occur under normal circumstances. It is not always possible to successfully fit a breather membrane to be effective for example where there is no support below it between purlins. If used as a single skin over an enclosed space (on a steel frame for example) where there is a lack of general ventilation and the internal environment is relatively warm and humid, another approach may be considered.

An anti-condensation finish may be applied to the sheet to prevent dripping or running of condensate onto the structure from low pitched sheet. This holds condensate within the anti-condensation material and allows it to evaporate in cycle. However, this approach may not be suitable for very high humidity conditions where saturation of the anti-condensation material may be longer term. Under such circumstances caution is advised regarding the possible affect of moisture being held against any standard backing coat on the material. Anti-condensation materials are therefore usually most suitable for Euroseam in plain mill finish aluminium.

 

Technical Data

Sheet length size has no restrictions as the sheets can be rollformed on site. We have sucessfully produced sheet lengths in excess of 100 metres long on many projects. Straight sheet lengths can be lifted in lengths upto 68 metres long using a spreader beam to assist lifting the sheets to the roof. Straight formed sheet lengths in excess of 68 metres can be produced at roof height, eliminating the need for spreader beams. Project specific method statements are supplied as part of our supply package.

Euroclad Euroseam® 75/400

Minimum sheet length - 500mm
Maximuim length transported by road - 18 Metres
Maximuim length rolled on the ground and lifted - 68 Metres
Maximuim length rolled at eaves height - 200 Metres

The standard straight sheet width used is 400mm (installed at 402mm minimum) as it is the most cost effective sheet dimension when constructing a standingseam built up roof system. At a 400mm width the excellent attachment and long span perfomance keeps the cost low of the system halter components.  The maximum frequency every 1.8 metres along the roof slope.
The Euroseam® straight profile is also available in a 300mm or 500mm profile. The 300mm profile is required in areas where high wind load performance is required, the narrow sheet width gives more attachment to the roof structure as the frequency of halters is greater. The 500mm wide profile is suitable for use with the Euroclad Rocroof system - as the profile pan require supporting from rigid insulation.

More information in wind loads is available here.

Tapered Sheet Parameters

Minimum Length - 2 metres
Maximum Length - 20 metres
Minimum Width - 167 mm (Distance between the halters)
Maximum Width - 395 mm (Distance between the halters)

To assist installation we supply all tapered sheets with 100mm additional length either end of the ordered dimension.

Standing seam profile - Minimum CONVEX Radii

Euroclad Euroseam® 75/400 Minimum Convex Radii:
0.9mm Stucco Embossed Material - 8 Metres
0.9mm Painted Material - 15 Metres
1.2mm Stucco Embossed Material - 1.5 Metres
1.2mm Painted Material - 8 Metres

Standing seam profile - Minimum CONCAVE Radii

Euroclad Euroseam® 75/400 - Minimum Concave Radii:
0.9mm Stucco Embossed Material - 8 Metres
0.9mm Painted Material - 15 Metres
1.2mm Stucco Embossed Material - 4 Metres
1.2mm Painted Material - 8 Metres

Standing seam profile - Minimum WAVEFORM Radii

Euroclad Euroseam® 75/400 - Minimum Waveform Radii:
Convex Radii: 8 Metres/Concave Radii: 8 Metres*
*based upon specific material use.

Standing seam profile - Maximum Precurved Sheet lengths

Euroclad Euroseam® 75/400 - Maximum sheet lengths
Transported by road - 18 Metres
Rolled on the ground and lifted - 35 Metres
*Curved sheet lengths may vary due to centre rise height of the curves or waveform height variation

Downloads -

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