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Lightway Crystal 400 HP Basic Kit for Pitched Roof 1.6m with Blue Performance 0.6 W/m²K

16 Customer Reviews
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    25 years

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    Roof Pitch




£525.60 inc. VAT
Product Code:
1 working day

Product Description

The Lightway Crystal sun tunnel adds more natural daylight to the home than competitor products and guarantees performance that will be as good in years to come as on the first day you installed it.

This sun tunnel size is ideal for ensuite bathrooms, walk-in wardrobes & cupboards.

Why does it perform better than competitor brands?

  • Bohemian Crystal glass dome collects 30% more natural daylight than polycarbonate equivalents
  • Very little maintenance - the glass dome is self-cleaning and won't deteriorate, yellow, rust, or rot over time
    • Lightway is so confident in its tube's performance, it has a 25 years guarantee
  • Extremely reflective sun tube, with 99.8% reflectivity
    • Made with advanced electroplated techniques, using layers of silver, copper and other precious metals
    • Results in a very solid, highly reflective layer; compared to competitors that use a silver foil layer
  • Sturdy clips holds tube in place rather than tape that will unstick
  • Glass diffuser, as opposed to a plastic one, allowing light to be evenly distributed throughout your room
  • Whether you purchase a flat or pitched roof sun tunnel, the Lightway Crystal will easily fit between rafters and joists, requiring no alterations
  • Very aesthetically-pleasing on your roof

How many sun tunnels do I need for my room?

The more you install, the better the results.

As with vertical windows and skylights, the more space you give daylight to get into your room, the better the results. We advise you purchase the biggest you can, and aim for 1 or 2 sun tunnels to be installed in the centre of your room, or a handful of smaller sun tunnels evenly spaced around the room. The brilliant thing about a sun tunnel is that they are suitable for any room and won't look out of place! 

This chart shows which sun tunnel size is best suited to a type of room.

Tunnel diameter

Room size

Room type




Small rooms, cupboards and short corridors




Hallways, small bathrooms or specific area of a larger space




Large hallways, stairwell and bathrooms




Kitchens, bedrooms and living rooms


How much daylight will this sun tunnel produce?

3 lightbulbs on a sunny day, 2 lightbulbs on a cloudy day.

The handmade Bohemian Crystal dome is unique to the Lightway Crystal sun tunnel. The crystal glass dome doesn't distort the colours of sunlight, and provides a unique movement of continuously shifting light spectrum as the sun changes position.

The light quality from the Lightway Crystal is incomparable to a standard electric bulb. Your sun tunnel will give out far more light than most energy-efficient bulbs on the market, and this light will be warm natural light, incorporating the complete colour spectrum, as opposed to the limited capabilities of a standard bulb.

Why Do You Need Blue Performance?

To enjoy the benefits of Lightway's extraordinary thermal performance technology.

This element has finally made sun tunnels safe and efficient equipment for transporting sunlight, without the unpleasant side effects of ordinary sun tunnels.

Warm air and cold air do not mix. Warm air from the building collides with cold air from the outside, causing condensation. Blue Performance is a double or triple glass insulation unit filled with argon gas, which is installed at the point of the building's layer of insulation. Blue Performance catches the condensation until it evaporates, meaning water won't settle on the diffuser and cause mould on the ceiling.

  • Water will not leak from your installation and cause damage
  • There will be no loss in thermal performance in weather
  • Your installation will not contribute to your room overheating in the summer
  • Your ceiling will not form mould
  • Your installation will meet low energy and passive house standards

Installation available by Authorized Lightway Sunpipe Installer from only £200* - please call for details (prices are subject to location and number of systems).


Product Specification

Application Pitched roof
Brand Lightway
Compatible Roof Material(s) Universal
Diameter 32cm (12.5")
Diffuser Material Sodium-potassium glass
Dome Material Bohemian crystal
Guarantee 25 years
Internal Tube Material Sterling silver
Pack Includes Bohemian crystal dome, glass diffuser & white trim, flashing & collar, ceiling tube, 2 x 625mm long reflective tube, 45° adjustable elbow, blue performance 0.6
Reflective Tube Guarantee 25 years
Roof Pitch 15-90°
Room Size 11-15 m²
Style Pitched roof with blue performance
Tube Length 0.625m
Tube Type Rigid

Customer reviews

14 September 2018
The light tube is to be used in my new shower room.
06 September 2018
Very well made and easy to install AAAAAAAAAAAAAA+++++++
30 April 2018
Good way to let light flood into an otherwise dark space. Used in utility room.
04 April 2018
I use this light tube in a dark kitchen and the difference it has made is remarkable, I would highly recommend the light tube.
06 February 2018
31 January 2018
We are already delighted with the product - lucky to have it installed on such a bright sunny day and to see the effect of it immediately.. We would happily recommend the product and the company to anyone.
04 November 2017
So far so good; however we have yet to complete the installation. Interior fixing looks good, and the rest looks easy to fit. Can't wait for it to be fully installed to let more light into this dingy room.
03 October 2017
"Let there be light". We are very pleased with the result. We have to remind ourselves that we don't have to turn the light off when we leave the kitchen.
07 September 2017
The tunnels have made such a difference to both areas. I am now looking at other rooms to fit them in.
17 August 2017
As it is exactly a year since our our Lightway 400 light tunnel was installed, I thought I would tell you that we are still chuffed to bits with it, and I’m pleased that you have been able to use some my photos of its installation on your website. Excellent – I hope it helps you to promote this excellent product. On a technical front, you may recall that I originally ordered the unit with a small LED light built in, but the manufacturers messed up on this and you refunded me the extra cost. Well, having lived with it now for a year I can tell you that an LED light would have been unnecessary, for us anyway. That’s because, living in a city environment, even in the middle of what seems like a pitch-black night the tunnel picks up enough ‘light pollution’ to provide a sufficient gentle glow to, for example, light our way to the loo. Doubtless this might not be the case if we lived in a ‘dark sky area’, but for us here it is quite sufficient. I have also sent ***, of ***, the same link to your website. His work installing it was, as always, painstakingly meticulous, and he must take his share of the credit. The whole operation was worth every penny.

Average Customer Review (5.0)