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em.tube Sun Tunnel
em.tube Tubular Skylights are a highly effective means of transmitting daylight into internal rooms or areas lacking in natural light.
Natural daylight is captured at roof level via the tubular skylight and directed downwards through rigid or flexible tubes and then diffused at ceiling level. These flat roof skylights can also be used on pitched roofs and can easily be installed into new or existing roofs, accommodating most flat roofing specifications. They can also assist compliance with Building Regulations.
A passive rooflight ventilation system and a magnetic double glazed ceiling diffuser are included as standard. em.tube tubular skylights are available in flat, and tile and slate pitched roof options. Many skylight accessories are available to be used in conjunction with the em.tube roof skylights.
Key Benefits:
- Low profile UV protected polycarbonate dome on flat roof applications. Flat glass on pitched roof applications.
- Flexible and rigid tube options
- Lower tube ceiling mounting ring
- Easy-fit magnetic double glazed ceiling diffuser
Certification and Performance
The em.tube tubular skylight is a very high performing rooflight offering 98% reflectivity and up to 20 times more light (2200 lux) than a 100w bulb (105 lux) on a rigid tube system. See the light transmission page for full details on this.
When installed in accordance with the manufacturer’s recommendations, em.tubes are expected to exceed the life of the roof covering. em.tube tunnel skylights are guaranteed against the effects of defective design, materials or construction for ten years, subject to certain conditions. ‘Special Project’ guarantees are available. For further details contact us.
Shapes and sizes
em.tube tubular skylights are available in rigid and flexible tube systems.
Rigid tube system
Offers 98% reflection on inner surface. Up to 20 times more light (2200 lux) than a 100w bulb (105 lux). Suitable for longer tube lengths.
Flexible sun tube system
Provides up to 14 times more light (1500 lux) than a 100w bulb (105 lux). Suitable for shorter tube length and is easier to install.
Sizes available:
Tube diameter
- 350mm diameter: Suitable for very small rooms and fits between most conventional rafters and joists, eliminating need for trimming work.
- 450mm diameter: Suitable for bathrooms, hallways, landings, or corridors.
- 550mm diameter: Suitable for living areas, kitchens, large landings, corridors, offices, retail areas or commercial areas.
Length of tube
- 625mm and 1250mm extension pieces are available in rigid tube – these are suitable for extending the Flexible and Rigid Tube Systems.
Flexible tube extension pieces are also available – please contact us for advice on optimum permutations and application and specific sizing requirements.
Click here to see full size chart.
Glazing
As standard, em.tube tubular skylights are supplied with flat glass unit for pitched roof systems and a double skin dome for flat roof systems.
Please contact us for bespoke requirements.
Upstands
The em.tube pitched slate or tile roof kits come ready to install with flashing supplied – no upstands are required for these.
The em.tube flat roof kits should be installed either to an em.curb uPVC 150mm splayed upstand or a builder’s upstand.
For full details on the em.curb upstand, please see em.curb upstands
Ventilation
Passive trickle ventilation is available for both the flat and pitched roof tubular skylight options. Please enquire for more details.
Accessories
em.tubes are available with a range of Accessories to enhance the performance of the product and to meet specific needs.
Accessories
- em.tube Extension Pieces
- em.tube Light Kit
- em.tube Security Collar
- em.tube Upstand for flat roof applications
Extension Pieces
625mm and 1250mm extension pieces are available in rigid tube – these are suitable for extending the Flexible and Rigid Tube Systems.
Flexible tube extension pieces are also available – please contact us for advice on optimum permutations and application and specific sizing requirements.
Fire Collars
These are metal rings mounted above the ceiling diffuser to protect against fire spread. They are certified up to four hours’ fire protection.
Light Kit
These are a 240V 60watt specially designed lighting component for the em.tubes providing 24 hours single light source. They are very cost effective as there is no need for a separate light fitting.
Security Collar
A circular metal ring with intruder resistant grid for enhanced security on a tube skylight.
Upstand
Available for ease of install – no need to build an upstand on site. See upstand page for more details.
For pitched roofs
Tile Flashing Kits are available to suit plain/profiled tiles or slates:
- 8-16mm tile/slate thickness: Slate Roof kit
- 41-32mm tile-slate thickness : Tile roof kit
For flat roofs
Whitesales recommends using Flat Roof Flashing Kits and installing to a uPVC em.curb.
Light transmission
How much light is transmitted?
Tests carried out in the UK prove that anything up to 20 times the equivalent of a 100 watt bulb can be achieved with the rigid em.tube system.
The graph to the left shows light intensity at three times during one day, comparing Flexible and Rigid em.tube with a 100 watt bulb.
For maximum daylight output the em.tube tubular skylight should be located on a south facing roof slope and/or as high as possible, out of any shadow of tall trees and buildings. It should also be installed to give the most direct run from roof to ceiling level.
No specific level of light transmission can be guaranteed because specific applications and external light conditions are beyond our control.
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