VELUX sun tunnels for pitched roofs

Flex or rigid tunnels?

Rigid tunnels TWR/TLR

Product features: 
Rigid tunnels are recommended when there is a straight, unobstructed path from the roof to the ceiling

  • Recommended for tunnel lengths from 0.9 to 6 m
  • The 1.8 m long rigid tunnel should be used when greater lengths – in combination with ZTR extension sections – are necessary and to ensure adequate daylight levels are obtained. It is supplied with 2 x 30° bends. Can be extended to distances up to 6 m.
  • Rigid tunnel has a diameter of either 35 cm or 25 cm.
  • Super reflective coating along the interior of the tunnel provides a 98% internal reflection rate.
  • An easy-to-assemble diffuser kit comes complete with a frosted acrylic insulating pane and a standard, white ceiling trim ring.
  • Integrated polyurethane flush frame with 4 mm toughened glass with clear and clean coating on the outside. Frame with integrated, grey aluminium, flush flashing for installation in flat roofing material and with black polyurethane flashing and non-lead bottom flashing section for installation in profiled roofing material. Sash in ASA (ABS plastic), 4 mm toughened glass and stay-clean coating on the outside.

Flex tunnels TWF/TLF

Product features:
Flex tunnels are recommended when installation around obstacles within the loft space is required, or if there is not a straight, unobstructed path from the roof to the ceiling.

 

  • Recommended for tunnel lengths from 0.4 to 1.5 m - or up to 3 m in combination with the ZTR extension section – between the roof and ceiling. 
  • The 2-meter long, super reflective, flexible tunnel has a diameter of 35 cm.
  • Easy to assemble.
  • The diffuser kit comes complete with a frosted acrylic insulating pane and a standard, white ceiling trim ring.
  • Integrated polyurethane flush frame with 4 mm toughened glass with clear and clean coating on the outside.

A sun tunnel for every situation

 Distances

Tiles

Slate

between
0.4 m and 1.5 m
Sun tunnel flexible
(TWF) 
Sun tunnel flexible
(TWF) 
between
0.9 m and 1.85 m 
Sun tunnel rigid
(TWR)
no extension required
Sun tunnel rigid
(TLR)
no extension required 
 between
1.85 m and 6 m
Sun tunnel rigid
(TWR)
with extension section(s)
(ZTR)
Sun tunnel rigid
(TLR)
with extension section(s)
(ZTR) 

LUX calculator

See how much light a sun tunnel will provide and find the perfect sun tunnel for your home.

This calculator gives you an indication of the light output from a VELUX sun tunnel compared to 60W light bulbs.