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Order Helpline 01752 692 760

Ubbink OFT 2 Flat Roof Breather Vent - 110mm


With a 110mm diameter, this Ubbink OFT 2 Flat Roof Breather Vent delivers optimal ventilation in built-up felt roofs. It boasts a spacious free vent area coupled with a low Pascal resistance figure, ensuring efficient airflow. Featuring a mechanically fixed stack cap, it provi...Read More

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With a 110mm diameter, this Ubbink OFT 2 Flat Roof Breather Vent delivers optimal ventilation in built-up felt roofs. It boasts a spacious free vent area coupled with a low Pascal resistance figure, ensuring efficient airflow. Featuring a mechanically fixed stack cap, it provides enhanced security during extreme weather conditions while remaining easily removable for hassle-free servicing.

Made from a durable combination of black polypropylene and aluminium, this Ubbink Oft 2 Vent effortlessly integrates with torch-on felt and is an excellent choice for Glass Fibre (GRP) installations. Its sleek and less obtrusive stack design will elevate the aesthetics of your roof, complementing the overall roofline.

Features & Benefits: Ubbink OFT 2 Flat Roof Breather Vent - 110mm

  • Ideal for built-up felt roofs
  • Large free vent area for efficient airflow
  • Mechanically fixed stack cap ensures secure installation in extreme weather
  • Easily removable stack cap for convenient servicing
  • Compatible with torch-on felt and Glass Fibre (GRP) installations
  • Aesthetically pleasing design with a less obtrusive stack above the roofline
  • Durable construction from polypropylene and aluminium materials
  • Black colour


Length 220mm Depth 330mm Width 330mm


Colour Black Material Aluminium
Pack Size Pack of 1 Fitting Type Gasket
Pipe Diameter 110mm


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Questions & Answers


Hello, Would this be suitable for adding ventilation to reduce condensation in a shipping container/Portacabin used for storage? Thank you.


Technically yes, but this vent is meant to vent a void in the roof and not a room as such. 


Is this suitable for venting bathroom fan through flat roof


No, you will need one that has a piper on the base as well - I will email you the correct one


Hi. Is there an installation manual or a video showing how to install this? We are retrofitting into our glass fibre flat roof. Many thanks


There are no install guides im afraid


Hello, I have a pitched cold roof in a summer house and wish to vent it. The roof has felt on top of osb, a 40mm void then 50mm of PIR insulation. The dimensions of the building are 4.8m x 3.6m. Is this best product to use?.


This is a flat roof product - please call in and one of the team will be able to help you


What is the mm2 ventilation provided by each UBBINK OFT 2 flat roof breather vent. Will it work with a single ply membrane roof.


Hi Stuart

Have a look at this link



Hi We live in an area prone to high winds. We'd like to get some way of allowing incoming gusts into our flat roof carport to escape so as to relieve the airpressure that forces up the roof in high gales eg storm Eunice. The carport is about 7 metres long by about 2.2m wide. We are thinking if we installesd say 6 of these vents, it would allow gusts to escape out of the enclosed space and so assist in reducing the impact of the wind. Any thoughts? MAny thanks Chris Miller, Minehead Somerset


Good Morning Chris.

Yes, the OFT2 would help to relieve any air pressure. Please check that it is suitable for the materials on your roof first before placing an order. 
 If you need further assistance, please get in touch with me on 01752 692760 with any questions


Is this a suitable product to use for a felt roof application?


This is suitable as it has an aluminium flange.



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