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Repairing damaged external wooden window frames

Discussion in 'Windows and Doors' started by aex57, 3 May 2020.

  1. aex57

    aex57

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    Hello,

    I have some external wooden windows that are about 20 years old and south facing. I believe they are sun damaged, or have just been weathered over the years, and do at least need a lick of paint if not more. I’ve attached some photos but am at a loss about how to approach a repair. Do I need a filler of some sort to fill in the cracks, sand then down, and then a paint? Any products, brands or method advice would be appreciated. Thanks.
     

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  3. JobAndKnock

    JobAndKnock

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    The paint is pretty ropey, so scrape and sand off to expose the timber beneath and re-inspect. If there are signs of rot in areas (punky or soft timber which can easily be dug out with a blunt screwdriver) the affected areas should be raked out with as wire brush, treated with a wood hardener (such as Bonda Wood Hardener) then filled with a 2-pack wood filler, sanding off to finish. Repaint the lot afterwards
     
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  4. aex57

    aex57

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    Thanks for the response. I read wooden windows should last a really long time if treated well. I can only assume these have not been.

    • Can you recommend a paint brand that would be suitable to protect a wooden external window?
    • Would you think these can be restored to good condition following your advice or would you think they have served their time and need replacing? A couple of the double glazed panes at the back of the house that need this repair are already misted.
    • Do you think this damaged is caused by the sun? The north facing front of the house frames are in good condition still and are the same age...

    Thanks again.
     
  5. Johnny Allround

    Johnny Allround

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    Good morning aex, do the wood repairs as jobandknock suggested. Your windows have been stained with a mahogany colour. Sand down rigorously to get back to the wood. Sikkens basecoat of rosewood and 2 topcoats will bring them back to new. As for the glass, the units have failed, simply replace the affected ones the windows should be good for another 10 years. Sikkens web site will direct you to your local stockists. Hope this helps.
     
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  6. Harry Bloomfield

    Harry Bloomfield

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    My frames were of a similar age, but I added alloy frame DG inserts into the existing frames. Which made the windows somewhat better, but it proved to be only a temporary fix, the actual frames continued to degrade despite my best attempts to look after them. I decided to replace the lot with modern complete DG, it was well worthwhile, for the peace of mind.
     
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  7. aex57

    aex57

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    Thanks for the response and for the colour tip. Finding the sikkens paint in stores is challenging at the moment. Would this alternative be ok? and could this be applied directly to wood as a primer and then given the extra 2 coats of same product? https://www.screwfix.com/p/ronseal-exterior-woodstain-satin-deep-mahogany-750ml/895fg

    I fear I might be fighting a losing battle with the windows. I have at least five triple panelled windows to do so I’m worried it could all be in vein. I could at least try one and if the results are poor think about replacing them.
     
  8. Johnny Allround

    Johnny Allround

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    I personally would only recommend Sikkens, used it for over 15 years with nothing but praise. There maybe others on here that can recommend ronseal. Sorry only endorse products I have used and trust.
     
  9. DIYnot Local

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