Solatube Ø 53 cm system square pitched roof
May 16, 2022
Custom-made daylighting system (prefab) basement
May 16, 2022

Solatube Ø 53 cm system square flat roof

Solatube Ø 53 cm system square flat roof is designed to maximize light output at any time of day. It effectively captures low-angle rays in the morning and late afternoon, and collects high-angle rays at midday for powerful performance. 

The Solatube Ø 53 cm square series features a patented transition box that seamlessly converts the round tubing to a square diffuser.
The transition box easily fits into standard commercial ceiling grids. 

Product features

  • Predominantly used for commercial applications
  • Illuminates spaces up to 14 metres high
  • Easy installation and low maintenance
  • Excellent light quality and colour rendition

The flat roof flashing is suitable for all types of 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.
In addition to the standard single-walled flashing, a isolated option called Solatube Ø 53 cm prefabricated insulated flashing is also available if required.

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Diffuser type Square
BBA Technical Approval Yes
FM approval Yes
CE / Declaration of Performance Yes
Solar Impulse Efficient Solution approval Yes
ETIM class EC003113 daylight system
Maximum standard length 60 cm
Recommended maximum tube length Maximum 15 metres
Product guarantee 10 years
Solar energy transmittance (EN 410) g‐value = 0.58
External Fire Performance of roofs (EN 13501-5) BROOF(t4)
Light output in lumen (half year average benelux) 6141 Lumen
Light transmittance of the assembled system 51 %
CRI – color rendering index CRI = 100
Thermal transmittance of the assembled system U =2.2 W/m 2 K
Airborne sound insulation (EN ISO 717‐1) Dn,e,w (C;Ctr) = 48(0;-1) 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 53 cm system square, flat roof T833120-53

FM quality mark


FM quality mark - approval Solatube Ø 53 cm

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