Window leaking in heavy rain

After the heavy rains at the beginning of the month I noticed that the wooden window sill in my back bedroom was swollen. After another heavy rain fall and looking outside I noticed that the rain gutter was blocked above the window. I have asked the management company to clean the gutters, I'm still waiting two weeks later.

Anyway the window sill is now more damaged and the plasterboard along the sides of the window and directly above it are now very damp. 

I'm wondering how the rain is getting in? is it from the brickwork getting soaked or from damaged seals around my window? 

In Progress!!!


  • swingaloo
    swingaloo Posts: 2,645
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    Im no expert but looking at those photos I would think the problem is the bad brickwork.
  • Lorian
    Lorian Posts: 5,674
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    edited 29 November 2023 at 1:16PM
    Go watch it next time it rains but my guess is the join in the gutter is leaking at the joiner above the top window and dripping into the top of the bottom sash.

    All exacerbated by the growth up in the gutter likely blocking it.

    If it is leaking they will need to determine the make to buy the right rubber seals and replacing them up there not for a novice ladder user, so good you don't have to do it.
  • stuart45
    stuart45 Posts: 3,808
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    Looks like solid 9 inch brickwork, so too much water from the gutter will find it's way inside.
  • slipthru
    slipthru Posts: 603
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    Thanks for the replies.

    Yes it does look like the join in the gutter could be leaking as that seems to be where the marks of water are on the window. 

    And it is solid 9in bricks as it's an old Victorian house conversion.

    So sorting the gutter should be the fix. That's good to know. 

    Now I wish they would hurry up and sort it.
    In Progress!!!
  • smyluk
    smyluk Posts: 13
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    Whilst I also suspect the issue is with the brick work, double check to see whether the seals around the window frame have split or are starting to break down. This could be an area for water to enter, either inside your room or inside the frame.
  • twopenny
    twopenny Posts: 5,299
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    Can I see the mortar is missing at the end of the sills? Probably in other spots.
    With the gutter blocked as well it's doubling the trouble.
    Perhaps approach them with it's damaging your building making them more interested rather than your inconvenience.

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