Solatube Ø 25 cm system square flat roof flashing
May 12, 2022
Solatube Ø 25 cm system square pitched slate / plain tile roof
May 12, 2022

Solatube Ø 25 cm system square flat roof ECO flashing


For the smallest spaces in the home or at work. This type has the best insulation values. Illuminates for example a toilet, small bathroom or a hallway. Also ideal as an application in monuments.

Flat roof flashing
The flat roof flashing is suitable for all types of flat roof coverings, such as: EPDM, PVC, TPO, Bitumen, CPE.

At an additional cost, the flashing is available with a PVC coating to ensure good adhesion with PVC roof coverings. The flat roof flashing is also available with an increased upstand height for green roof applications.

ECO is an optional enhancement available for the Solatube 25 cm and 35 cm models (Pitched and flat roof) to enhance the thermal and acoustic properties of the Solatube daylighting system to passive house standards

 Supplied with

  • Inner dome = Additional dome provides double glazed element at roof level
  • Insulated roof flashing  = Twin-skinned, insulated flashing, available for flat or pitched roof
  • Insulation lens = Creates thermal compartments within the tube

Product features

  • Ideal for monuments
  • Best insulation values, thermal transmittance of the assembled system U=0.5 W/m²K* (passive house standards)

*Not included but necessary to achieve specifications multi-layer foil insulation (External tube insulation jacket to BS EN12667 & ISO8302 (0.0345 W/m²K))

Diffuser type Square
BBA Technical Approval Yes
FM approval No
CE / Declaration of Performance Yes
Solar Impulse Efficient Solution approval Yes
ETIM class EC003113 daylight system
Maximum standard length 54,5 cm
Recommended maximum tube length Maximum 6 metres
Product guarantee 10 years
Solar energy transmittance (EN 410) g‐value = 0.61
External Fire Performance of roofs (EN 13501-5) BROOF(t4)
Light output in lumen (half year average benelux) 1127 Lumen
Light transmittance of the assembled system 46 %
CRI – color rendering index CRI = 100
Thermal transmittance of the assembled system U =0.5 W/m 2 K
Airborne sound insulation (EN ISO 717‐1) 67 dB
Resistance to impact (EN 1873) SB 1350
Upward Load (EN 1873) UL 3352
Downward Load (EN1873) DL 7182


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Cad Drawing


Cad Drawing PDF Solatube Ø 25 cm system square, flat roof ECO flashing T816044-25

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