NV3 Rainscreen Subframe System

NV3 is the NVELOPE® subframe system suitable for concealed fix/mechanically secret fixed applications

NV3 elements – high-pressure laminate (HPL), ceramic, thin stone including fibre cement. Horizontal NVELOPE channel profiles are fixed to the vertical profiles. Rainscreen panels are hung from and secured with hangers.
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  • NV3 is the NVELOPE subframe system for concealed fix/mechanically secret fixed applications.
  • Secured using hangers and TUF rivets to enable a concealed fix.
  • Horizontal NVELOPE profiles are fixed to the vertical profiles. Rainscreen panels are supported by and secured to the horizontal profiles with hangers and adjustable hangers.
  • NVELOPE 'L' profiles are fixed using NVELOPE support brackets, fixed through a series of fixed and sliding points.
  • NVELOPE fixed point brackets absorb both vertical dead loads.
  • NVELOPE bracket spacing is determined by cladding options such as the dimensions and weight of the façade cladding, local wind loads.
  • NVELOPE flexible point brackets absorb wind loading and allow for expansion and contraction.
To access BIM drawings, click here.


The selection of materials to use in the construction of a subframe system within a rainscreen façade is of paramount importance. Material choice can also affect the thermal  performance of the overall rainscreen in addition to engineering assurance.


  • Aluminium subframe systems for rainscreen are designed in accordance with BS EN 1090-3:2008 and / or Euro code 9 – Parts 1-4
  • Aluminum is the second most widely used metal after iron and as such has a robust and well defined UK and international supply chain
  • Its low weight and high strength ratio and  simplicity of fabrication either on site or within a manufacturing setting ensures it is an ideal material with which to create high performance rainscreen subframe systems for cladding applications.
  • Aluminium is inherently corrosion resistant however this can be complemented and further improved by additional treatment including anodization whilst still maintaining a Euroclass A1 fire rating.
  • NVELOPE systems only use the superior 6005 T6 alloy which provides superior strength and performance over and above other commonly used aluminum.

Stainless Steel

  • Stainless steel  subframe bracket systems for rainscreen are designed in accordance with BS EN 1090-3:2008 and / or Euro code 3 – Table 5.1
  • NVELOPE stainless steel brackets are only manufactured from a superior 316 grade of alloy to provide an outstanding level of resistance to localised corrosion such as maritime and polluted areas.


Sustainability is a key factor in the design of any building. Identifying the right material from a sustainable manufacturer with a credible supply chain and responsible sourcing is crucial. At SFS:
  • The aluminium we manufacture from is 100% recyclable
  • The alloy we use is made from 100% re-melted material
  • 6063 alloy  as used by many other sub frame manufacturers' can only utilise 40% recycled scap due to global shortages.
  • CO2 production as a consequence of extrusion alone estimated at 0.35 - 0.5Kg per Kg currently.
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  • Utilising our proven technology of Project Builder Thermal you can enable any project to be optimised for performance and budget. Whether a lower or a higher thermal performance is required our Thermal Solutions range offers the ability to fine tune your project requirements.
  • NVELOPE brackets allow for adjustment between the face of the primary support to outer face of vertical profiles.
  • Green isolators (hard polypropylene isolator) assembled as standard, allowing rainscreen installations to benefit from the low thermal conductivity values associated with reduced thermal bridging within the design. 



NVELOPE Project Builder / Thermal Builder Calculations

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