Slimline CCF | Closed Cavity Façade System - Permasteelisa Group

Slimline Closed Cavity Façade (CCF)

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Slimline Closed Cavity Façade (CCF) technology, new to the market in spring 2026, is an exciting innovation that will enable developers to maximise NIA, preserve excellent views and meet sustainability targets. With all the benefits of traditional CCF at almost half the depth, Slimline CCF is set to transform high-end commercial façades.

What makes Slimline CCF different?

  • Reduced depth – Slimline Closed Cavity Façade is almost half the depth of traditional CCF (see right); similar to a single-skin system with double or triple glass unit
  • A venetian blind system that is 25mm deep, compared to the usual 60mm to 80mm
  • Blinds available in a range of colours
  • A high-performance coating on the outer pane 
  • Low-carbon glass and aluminium

Four benefits, one façade

In addition to the benefits of traditional CCF, Slimline Closed Cavity Façade offers:

 

  • Increased net internal area (NIA) as a result of the reduced façade depth
  • Reduced solar gain without blinds, thanks to the high-performance coating on the outer pane 
  • Increased unobstructed views, with blinds down for fewer hours during the working day
  • Reduced embodied carbon – Slimline CCF has a similar carbon baseline to a single-skin façade

Building energy performance

Slimline CCF with standard glazing reduces embodied carbon by 10% compared to traditional CCF.

 

With the addition of low-carbon technology – embedded high-performance coating, low-carbon glass and aluminium – embodied carbon is reduced by 35–40%, making the Slimline Closed Cavity Façade comparable to, or even higher performing than, a standard single-skin façade.

 

The aim is to offer developers a façade that enables them to maximise their NIA and preserve excellent views, while hitting Paris Proof 2030 sustainability goals.

Designing with Slimline CCF

All our Slimline CCF panels feature an insulated aluminium framed double-skin with closed cavity technology, internal double glazing, and full-height external single glazing.

 

As with all of our unitised façades, we create bespoke Slimline CCF solutions to meet architectural, client and design requirements. We provide exclusive design assist and validate our designs through rigorous mock-ups and testing.

 

If you would like to find out more about how Slimline CCF technology can transform your projects, contact Hans Jansen today.

Get in touch

Contact Hans Jansen