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Our front bay window has been leaking quite badly by the looks of it. On removing some internal wooden trim pieces I've been greated by this rot:
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So I've been outside, removed all the sealant and mortar from around/under the cill/sill.
Looking at the following photo though, it appears the internal wood which is rotting is reasonably accessible to water from the outside:
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So I'm wondering whether there's any better products around these days than just old fashioned window sealant to try and fill/seal the trim with?
Between each of the cills, there's a gap as well which I've raked out and need to fill. So for this:
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and also a good 2cm gap under the cill is there anything better then 4:1 sand/cement mortar mix?
Thanks
What I did filled gaps with fire rated expanding foam then where water could get in glazing sealent. For the fill you can get mortar in a tube now you can just pipe in, or there is a type of sealent that you can use to fix lead, name fails me. Lead sealent would be more noticable
You could probably paint in some rot hardern as well to help preserve the rest of the wood, but you will only be able to treat the accessible parts
Thanks, already has expanding foam under the cills and I've blocked up the other areas where I can.
Will get some rot hardener and frame sealant then if there's nothing else and mix up some mortar (there's a fair bit of mortar required).
The cills look like some sort of sandstone and have weathered and spalled a bit, and looks to have has paint for many years. If you are going to keep them painted then fill the gaps with weak mortar so it isn't a lot harder than the stone which could cause more to pop off over time. If you want to take it back to bare stone and have it looking fresh and new then some Lithomex or similar can be used in the joints and to build up the edges where they are damaged. You can get it to match most common colours or send off a sample if you want it exact matching.
https://www.womersleys.co.uk/shop/Stone_Repair_Mastics/womersleys-brick-stone-repair-mix
Thanks midlife....wife probably wants them back to sandstone but I wasn't planning on starting the outside renovation just yet. Appreciate the advice on the weak mix
My bay window used to leak. Slightly different but the water ran down the stone lintels then under the internal window sill. I was able to seal up the exterior gaps between the stone with filler, silicone and other stuff. prevented the bulk of the water coming in. Isolating the stone window sill from the interior wall also helped. I treated the stone with a breathable waterproof cream.
https://www.womersleys.co.uk/shop/Stone_Repair_Mastics/womersleys-brick-stone-repair-mixblockquote >Good link. I could do with a tub of that for my house!