use our project checklist to specify a project specific exterior cladding solution.

the requirements for each façade and cladding system are always different and depend on factors such as local wind loads, height of the façade, substrate being fixed to, selected cladding material and the cladding zone. all NVELOPE cladding systems can be engineered to project specific requirements.

unlock your scheme by completing and submitting the NVELOPE project checklist (ideally accompanied with elevation and plan autoCAD drawings, indicating your proposed cladding requirements).

this will allow us to prepare a project specific cladding solution that includes static calculations and setting out information for the support system, thermal calculations and indicitive m2 price.

please don’t hesitate to contact our technical department for specific advice.

a static calculation assesses dynamic forces e.g. wind load and dead loads (weight of the cladding) under project circumstances. in engineering, static systems do not move or change state – therefore a static calculation is ensures that under a given set of circumstances the system (mix of brackets and components) will not move and it will support the load that it’s intended to support.

the 2010 revision to Part 'L' places specific emphasis on the performance of the building details and the additional losses through linear thermal bridging. the thermal value of NVELOPE brackets has been calculated.

thermal bridges cause increased flow of heat and should be taken into consideration when designing a façade or façade system. since the anchoring for ventilated cladding must go through the thermal insulation into the substrate thermal bridging cannot be avoided.

NVELOPE NV and NH brackets are pre-assembled with thermal isolators – isolators help reduce thermal bridging.

the additional heat loss for each m2 of a detail is known as the PSI (?) value and this additional heat loss is dependent upon the type of detail, the thermal conductivity of the cladding materials and the quality of the detail design and installation.

setting out information which is produced by the project checklist allows for guide m2 price rates to be determined.

NVELOPE rainscreen systems ltd. unit 10 blenheim court, brownfields, welwyn garden city, herts AL7 1AD t: +44 (0) 1707 333 396 f: +44 (0) 01707 333 343 e: info@nvelope.com
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Architects / engineers / installers / distributors - Our service is being supplied to you without charge and so we do not warrant to you that it is free from faults or defects. you use our free service at your own risk and in no event shall we be liable to you for any loss or damage of any kind (except personal injury or death resulting from our negligence) arising from your use of, or inability to use, our service or from faults or defects in any material provided to you as a result of using the service whether caused by negligence or otherwise. External wind pressure factors have been assumed as 1.2 for general areas and 1.8 for corner areas for most onerous cases / loading conditions as based on BS6399-Pt2-1997. wind speeds in our calculations have been calculated to BS6399-Pt2-1997 using BREVe 3.2. Our static calculations and component pricing has been broken down into two zones. corner zones experience additional external pressures that may require additional brackets to reinforce your facade system. Fixed point brackets: NVELOPE profiles which are assembled to a fixed point are connected through the round holes in the NVELOPE bracket. the fixed point absorbs both vertical weight loads and horizontal wind loads. Floating point brackets: NVELOPE profiles which are assembled to a floating point are connected through elongated holes in the NVELOPE bracket. the floating or flexible point absorbs horizontal wind loads and provides room for expansion. Our suggested design is based on the information as provided by the information provider and it is therefore the responsibility of the information provider and the nominated project engineer to check on the suitability of the system for use on this specific scheme. Our design is based on fixings, brackets and rails all being supplied by nvelope rainscreen systems ltd. In our calculations we use nominal values for the design of fixings to the substrate material as recommended by fixing manufacturers and design assessed in accordance with the code (Eurocode 9). We recommend that a standard tension pull-out and shear test be undertaken by the contractor onsite for confirmation of minimum permissible values prior to commencements of work on site. This does not constitute an offer.

Nvelope Rainscreen Cladding bracket support systems and associated fixings have been designed in accordance with the new Eurocode 9 (EC9) and are implemented to National Annex BS EN1999.

Some of the aims and benefits of the Eurocode are to:

The EC9 provides common structural design rules, so meeting the compliance requirements of the EU. Plus Eurocodes have been recognised as the leading structural codes. Their flexibility enables use internationally, as evidenced by their adoption by several countries outside Europe.

The Eurocode 9 (BS EN 1999-1-1 : 2007+A1 : 2009) applies to the design of structural works in aluminium and complies with the principles and requirements for the resistance, durability, serviceability and safety of aluminium structures.