How to Fit a Roof Tile Vent Effectively

Suitable for roof pitches as low as 17.5°, depending on the profile of the roof tile, in-line roof ventilation tiles can be integrated with most concrete interlocking roof tiles.

Date: 2022-07-25

Author: Klober

Category: Product Focus

Tags: Klober Tile Vents, Uni Line Vents

Roof space ventilation is a key factor to keep in mind for any home – especially when the overall benefits are considered. Vent tiles for roofing also provide added benefits by reducing the risk of potentially harmful condensation and the negative impact this could have on the occupants.

Recommended roofing ventilation requirements UK

Klober’s in-line roofing vent tile provides a high level of ventilation potentially without the need for a breathable membrane. It aids in reducing the build-up of mould growth and structural damage in the roof space - often caused by damp, poorly ventilated roofs. For more information on requirements for roof vents, UK building regulations are a key point of reference.

It is equally important that said components are installed correctly. Mistakes here can potentially lead to health risks for occupants and damage to the property. That’s why this blog will run through the important steps to take for installing a roof tile vent effectively. 

Roof tile vents fitting

Suitable for roof pitches as low as 17.5°, depending on the profile of the roof tile, in-line roof ventilation tiles can be integrated with most concrete interlocking roof tiles. Installation should be approached as follows: 

  1. First, determine the location of the tile roof vents on the underlay. This must be in line with the tile below.
  2. Mark a 120mm x 180mm wide rectangle on the underlay directly below the tile batten, where the roof vent is to be fixed.
  3. Make a star-shaped cut within the rectangle from opposite corners and fold the four tabs upwards. The top tab will then need to be secured to the top side of the tiling batten.
  4. Place and fix the vent tile in position, ensuring the back spigot passes through the underlay.
  5. A subsequent visual check should be that the fixing lug on the underside of the vent tile is located under the left-hand interlock of the roof tile.
  6. Proceed with roof tiling in the normal manner. 

    Watch our video on How to Install a Profile Line Tile Vent for more information.


A common question that tends to arise is how many roof tile vents do I need? If used to provide high level ventilation in accordance with building regulations, then one in line tile vent every two metres would be required. However, this will depend on the property in question and the purpose of the vent tile. Plus, the type of roof air vents selected will depend on the roof type, such as pitched roof ventilation.

Other types of ventilation include:

  • Flat roof ventilation
  • Cold roof ventilation
  • Cold flat roof ventilation

Our double roman vent tiles, for instance, are designed for the most popular concrete interlocking roof tiles, with a minimum pitch of 17.5°.

Secondary components

The outlet on the underside of Klober’s roof vent is shaped to produce a given airflow for ventilation purposes. Nevertheless, ancillaries are often required here for enabling mechanical extraction. The roof tile vent adaptor and Flexipipe can be used to provide a simple connection to internal pipework for such purposes. With ease of installation in mind, there is no need for tile cutting or lead flashing. 

Pipe sealing collars offer an ideal solution in tandem with roof tile air vents for creating airtight and windtight seals around pipes passing through the roof. These can be used between the membrane or vapour control layer for pipes which penetrate the roof. 

For installation, simply cut a hole in the membrane to suit the pipe diameter, then position the sealing collar and use Klober Permo Tape on all four sides to adhere to the membrane. Finally, push the pipe carefully through the collar. 

Other considerations

  • Plain tile roof vents can be used not only to ventilate the roof space but to connect to extraction fans from areas such as bathrooms.
  • Remember to check the positioning of any tile vent in relation to insulation and timber rafters.

By following the steps above, vented roof tiles can be correctly installed for effective roof ventilation. 

Klober has been designing roof felt, vents and other components since 1964 and produce thousands of roof tile vents in our manufacturing plants across Europe. From the Uni-Line slate roof vent to the universal roof tile vents range, Klober has the most types of roof vents on the market to suit all ventilation requirements and roof types. 

For more information on in-line tile vents for roof projects, you can click here.