1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Leaking roof bottom of velux window

Discussion in 'Roofing and Guttering' started by oinkment, 22 Oct 2013.

  1. oinkment

    oinkment

    Joined:
    22 Oct 2013
    Messages:
    9
    Thanks Received:
    0
    Location:
    Leicestershire
    Country:
    United Kingdom
    I have 5 velux windows in the kitchen on a sloped roof.
    They have been fitted 5 years ago.
    3 of them started to leak from around the bottom of them (not sure where).
    Rain water is coming down into the roof space not through the window themselves but near the bottom of the fitting (near the profile / guttering? unsure of the name).

    Any ideas?
     
  2. Sponsored Links
  3. Alastairreid

    Alastairreid

    Joined:
    21 Nov 2008
    Messages:
    6,238
    Thanks Received:
    958
    Location:
    uk
    Country:
    United Kingdom
    Post a picture of the outside of the offending area of window.
     
  4. oinkment

    oinkment

    Joined:
    22 Oct 2013
    Messages:
    9
    Thanks Received:
    0
    Location:
    Leicestershire
    Country:
    United Kingdom
    You can see the window profile below:


    The leak is happening below where the apron is.

    Had a 'builder' come down and said the water is going through / up the apron and leaking though. He put some solvent along the edge of the apron to stick it down, which has stopped the majority of the leak.

    I've put plastic in the area which is still leaking:

    According to Velux there windows / Apron is tested in an air tunnel to check to see if water goes up on windy days.

    Also according to their manual the apron needs to be hammered down around the edges with a wooden hammer.

    Any idea?

     
  5. Alastairreid

    Alastairreid

    Joined:
    21 Nov 2008
    Messages:
    6,238
    Thanks Received:
    958
    Location:
    uk
    Country:
    United Kingdom
    Looks like the pitch of the roofs not steep enough.

    The wooden hammer is used to dress the lead into the profile of the tile! yours are flat.
     
  6. Sponsored Links
  7. oinkment

    oinkment

    Joined:
    22 Oct 2013
    Messages:
    9
    Thanks Received:
    0
    Location:
    Leicestershire
    Country:
    United Kingdom
    The lead is actually some form of plastic, which I was asked to hammer down. The pitch of the roof is 15 degrees. It has been ok for the last 5 years.
     
  8. freddiemercurystwin

    freddiemercurystwin

    Joined:
    21 Jan 2007
    Messages:
    18,684
    Thanks Received:
    2,055
    Location:
    Devon
    Country:
    United Kingdom
    the leak may not be occurring where the apron is, it could just be manifesting itself there, the leak could well be at the top of the rooflight or even higher.

    Waste of time getting a 'builder' get a good roofer round.

    15deg is right on the limit for Velux's the workmanship must be first class otherwise you're on borrowed time.
     
  9. hardmetalking

    hardmetalking

    Joined:
    2 Sep 2009
    Messages:
    259
    Thanks Received:
    33
    Location:
    Cambridgeshire
    Country:
    United Kingdom
    Agree with Freddy!
     
  10. catlad

    catlad

    Joined:
    29 Jul 2011
    Messages:
    4,054
    Thanks Received:
    552
    Location:
    Lancashire
    Country:
    United Kingdom
    Were they fitted with the low pitch underfelt collar.
     
  11. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Sponsored Links
Loading...

Share This Page