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Leak around bay window

Discussion in 'Windows and Doors' started by Adam1991, 13 Dec 2019.

  1. Adam1991

    Adam1991

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    We’re almost finished renovating our home and I’ve come to find theres a leak coming in through the bay window.

    In the images i’ve already removed the sealant on the interior.

    the the internal joints of the bay window (first 2 pics) theres water coming in.

    Obviously in the internal corner theres water also.

    Would anyone be able to tell me where i need to reseal please?
     

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  2. bobasd

    bobasd

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    i dont get involved with fitting modern frames but pics 3,5&7 appear to be connected to a lack of external sealing.

    the sealant should have been applied before the vertical trim piece was positioned - the trim could then have been pushed into a beds of sealant.
    it looks as though the trim was dry fixed, and then sealant was smeared on in an attempt to seal the cover piece?
    in pics 5 & 7 the gap between the render and the sill should be cleaned out, & sealed with sealant.

    the patching-in of the render is a very poor attempt.
     
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  4. Adam1991

    Adam1991

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    cheers for the reply.

    yeah i did think it didnt look right, quite shoddy to be honest. We’ve never noticed it before but then we had fresh plaster on and all of a sudden its just appeared straight through.

    someone suggested it was the build up of condensation on the windows which has run into the ‘runs’ in the frame and gathered into that corner
     
  5. crank39

    crank39

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    The water in the corner wetting the plaster is a tell tale sign the window wasn't sealed onto the sill when assembling/fitting the bay, water is tracking sideways between the frame a sill till it reaches the end of the window where it should meet a barrier of silicone forcing the water to come forward and drip off onto the sill, whats happening now is it's continuing along the sill behind the plaster, peeling wallpaper in the corners is often a sign of this too
     
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