Advise with venting roof when installing Velux window

Discussion in 'Engineers' Talk' started by Darren Stewart, Mar 26, 2021.

  1. Darren Stewart

    Darren Stewart New Member

    I'm putting together drawings in order to get a building warrant for my loft conversion.
    I've had Building Control come back to me with queries over venting my roof at the Velux windows. The design allows a 50mm air gap from ridge to eaves but the problem comes at the Velux where the trimmers are installed so there is a small section at the top of the window and bottom where there isn't full air flow. Has anyone got any suggestions to overcome this problem? I was thinking of drilling the rafter adjacent to the trimmer to allow air flow but I'm not sure if this is feasible.
    Thanks
     

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