Buitink Technology realized an ETFE air cushion roof for the new bussiness lobby's dome in shopping centre Bisonspoor in Maarssen. This roof consists of 5 ETFE air cushions, with a total surface area of about 470 m².

Unique ETFE roof design

Its unique design and shape being suggestive of dolfins and whales.

Pictures by: Harry Noback Fotografie

Heat reflecting roof

The roof is consists of 4 layers of ETFE foil (3 air chambers). The outer layer is heat reflecting by using a special IR blocking foil. This foil is light transparent but blocks effectively the heat from sun shine (see below graph ''T IR-cut'').

Below graph shows the relation between Transmission and Wavelength of light for standard foil (''T Standard natural") and IR blocking foil (''T IR-cut'').

	3 layer ETFE clear	1 layer IR-cut / 2 layer ETFE clear
Direct energy transmission:	0,74	0,36
Radiation reflectance:	0,22	0,11
Light transmission grade:	0,71	0,44
Light reflection grade:	0,24	0,11
UV- transmission grade:	0,45	0,19
Solar heat gain coeffincient:	0,75	0,41

Project data air cushion roof

Size:	470 m² total for 5 cushions
Material:	ETFE foil, transparant including infrarood block
Client:	Wintertrust
Architect:	Op ten Noort Blijdenstein
Main contractor:	Bouwbedrijf aan de Stegge Twello BV
ETFE air cushion roof:	Buitink Technology
Location:	Bisonspoor 2017, 3605 LB, Maarssen

Location

Bisonspoor 2277, Maarssen