Saturday, September 17, 2011

ETFE building envelope

The follow reasons justify my decision to use an ETFE (ethylenetetrafluoroethalyne) building envelope rather than glass;

- increased use in the building sector (more polymer resin is consumed today than steel, aluminum and copper combined*)
- super lightweight (350g/m2**)
- durable
- fire resistant
- self cleaning properties
- when used in 2 or 3 layers provides high levels of insulation









- 100% recyclable
- 90% transparency to visible light resulting in reduced need for indoor lighting (double glazed glass is only 80% transparent to visible light)








I propose infilling the hexagonal openings of the buildings concrete exoskeleton with ETFE 'pillows'. This will form the inner skin of the double facade. Ventilation will be provided between the inside of the building and the cavity of the double facade where the ETFE pillows are fixed to the structure enabling the heat stack effect to cool and ventilate the building.

* John Fernandez, Material Architecture, 2006.
** Weight: under the condition t=200µm
*** images from MakMax