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external upvc window sealant gaps

Discussion in 'Windows and Doors' started by andyb2000, 3 Feb 2021.

  1. andyb2000

    andyb2000

    Joined:
    21 Jan 2016
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    Location:
    Hartlepool, UK
    Country:
    United Kingdom
    Hey all,

    House is around 5yrs old and whilst up fitting christmas lights a few months ago I noticed some pretty big gaps and poor sealant around my 1st floor windows. The windows are always cold, when windy you can feel wind and the cold air from them so I want to solve this.

    windows.jpg

    Photo attached isn't the best quality but hopefully it shows the poor silicone application from the builders.
    Am I right in thinking best option is to remove it (best way of doing this? scraper/plastic spatula type? Looking at it I'm hoping I can grab it with pliers and it may remove in a whole row/line at a time as it doesn't look well attached!) and then re-apply using something like Everflex 450 with a wide nozzle and be generous so it really fills/falls into the gap to fill it, or should I be using something to apply inside the gap first due to the coldness creeping through? Some sort of filler inside the gap?

    Thanks for and advice.
    Andy
     
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  3. diy_fun_uk

    diy_fun_uk

    Joined:
    16 Sep 2006
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    Location:
    Fife
    Country:
    United Kingdom
    Talk about shoddy workmanship. Still, what you don't see doesn't harm you seems to be the motto of many these days.

    I'd do something like this:

    1. Remove existing silicon.
    2. Fill cavity with expanding foam.
    3. Fit upvc cloaking trim and silicon the edges as required.
     
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