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I'd have thought mastic over foam rather than mortar
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Different use case but I used this stuff to patch a porch overhang: https://www.toupret.co.uk/professional-filler/product/exterior-surfaces/masonry-repair-filler
No max depth. So I don't think you'd need expanding foam. Just pack it in.
I guess there's also a wider question as to why this has occurred?
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That looks like a wood batten packer adjacent to your finger in the first photo.
And it's probably sodden, helping the do along nicely.
I'd say dig it out with a point object but if there's one you can see, there's others you can't.
What's happening above the frame? If that's not sealed, I'd guess it was leading to most water ingress.
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Tape the wall and frame with this :-
https://www.sealantsonline.co.uk/Products/Everbuild-mammoth-professional-blue-masking-tape/EVE1251push some caulk saver in there :-
https://www.sealantsonline.co.uk/ProductGrp/0044003d0002and then :-
https://www.sealantsonline.co.uk/Products/Geocel-201-external-polymer-mastic-sealant/GEO4120
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Grumpy_Git
hugo7
NotThamesWater
Airhead
@6pt
I’ve got some French doors around which we are seeing moisture ingress/damp. Inspection immediately reveals why. Am I right in thinking fill with some kind of expanding foam, cut back, mortar over the top? Gap is about 55mm deep, goes up to 8mm at its widest. My usual DIY approach is to pay someone to do things, please instruct me in the simplest possible terms.
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