Skytubes produced in the Netherlands Φ25, Φ35 and of bigger diameters equipped with

  • truncated cone-cone dome creating very favorable angles of incidence for all positions of sun-rays
  • built in reflector
  • aluminium double walled insulated upstand
  • single or double dome made of PC or PMMA or combinations
  • aesthetically designed of enlarged diameter diffuser
  • extension tubes 62.5 cm long for bringing light down as low as 8-9m from roof level

The form of Helios shell, truncated cone-cone, favors higher light transmittance in comparison to other dome forms due to almost 90o angles of incidence of sun radiation in the course East-South-West.

Main dimensions sloped roof (15°-60°)
D-250 D-350
Roofing tile flashing
 700×890 mm 700×890 mm
Roof opening diameter
 270 mm 370 mm
Tube section nominal inner diameter
 250 mm 350 mm
Plafonniere diameter
 320 mm 420 mm
Main dimensions flat roof (<15°)
D-250 D-350
Height above roof
 280 mm 290 mm
Roof opening diameter
 270 mm 370 mm
Flange diameter upstand
 520 mm 620 mm
Standard applicable for roof thickness
 160 – 400 mm

>400 mm with extension tube

 160 – 400 mm

>400 mm with extension tube
Tube section nominal inner diameter
 250 mm 350 mm
Plafonniere diameter
 320 mm 420 mm
Material specification
Dome, standard / High impact resistant dome
 PMMA / PC
Upstand Double skin aluminium with insulation
Sloped roof slate HDPE weathering slate with non-lead flashing
Tube Aluminium with silver coating
Fixation ring ABS-PMMA
Diffuser PMMA OPAL
Ceiling trim Aluminium