Loki Posted September 18, 2021 Report Share Posted September 18, 2021 Hiya All Mid-30s concrete? bay window cill, 3 sections butted up and painted over the years - 1. The joints have failed and been repaired poorly (not by me!), leading to water run-through to brickwork below - recommend options/how to make good, and with? 2. Cill concrete seems to have spalled? in some areas - recommend options/how to make good and using? 3. Flaking paint - options to remove from the concrete (given most paint strippers are 'lean' nowadays) and afore subsequently painting? I have some Zinnser int/ext sealer - good or other better option? Appreciate any guidance! L Quote Link to comment Share on other sites More sharing options...
TIGHTCHOKE Posted September 18, 2021 Report Share Posted September 18, 2021 Could it be as simple as applying some Thompson Weatherseal? Quote Link to comment Share on other sites More sharing options...
Loki Posted September 18, 2021 Author Report Share Posted September 18, 2021 Hi Tightchoke Thank you for your suggestion - not sure it will seal through and stop further washout of the lime-based morter in the bay below (I will repoint after sorting the leak-through gap). Been toying with cleaning out joints (with angle-grinder) and back-filling with epoxy resin to seal..... L Quote Link to comment Share on other sites More sharing options...
Digger79 Posted September 18, 2021 Report Share Posted September 18, 2021 Use touprelith on sill joint from bq, goes of in 20 minutes so dont mix to much, can be rubbed down or sanded. Use wire brush or drill atachement for paint removal. Hope this helps Quote Link to comment Share on other sites More sharing options...
Saltings Posted September 18, 2021 Report Share Posted September 18, 2021 (edited) wire brush the dead paint off prime and re finish the joint if you dont want to point up wire beush debris eurocell fixall sealant tool up using spray oil soapy water dont work you will be golden and paint with oil based paints now hard to find acrylics are hydroscopic and draw moisture in keep it simple if it worked in the past it will work again Edited September 19, 2021 by Saltings Quote Link to comment Share on other sites More sharing options...
Scully Posted September 21, 2021 Report Share Posted September 21, 2021 (edited) Acrylics/latex paints aren’t hydroscopic, and oil based ( solvent ) paints are as common now as they ever were. Personally I would clean the blown pieces with an anti fungal wash, give the crack a good clean and fill with Tetrion filler, then apply a coat of stabilising solution before repainting with a trade paint of your choice, either water or oil based. You can seal cracks and around peripheries prior to painting with a good sealer such as Weathermate, or any other paintable sealer. Edited September 21, 2021 by Scully Spelling Quote Link to comment Share on other sites More sharing options...
Saltings Posted September 25, 2021 Report Share Posted September 25, 2021 hydroscopic the wrong word acrylics dispel rain droplets however in humid weather moister passes through a bit like goretex oil based paints are not the same anymore inc red oxide primers dont work as they did linseed oil has been removed a moisture metre is a handy tool when there is doubt Quote Link to comment Share on other sites More sharing options...
Loki Posted September 26, 2021 Author Report Share Posted September 26, 2021 Hi Gen'lmen Wirebrushed off all flaking/loose patches of paint using a drill attachment - surface pitted below. Touprelith acquired (thank you Screwfix). Undecided about the joints - seem solid enough but mulling over pumping in (syringe) some sort of 'super' adhesive - interesting link on U-tube using Superglue and bi-carb soda - rock hard..... Any further thoughts appreciated. L Quote Link to comment Share on other sites More sharing options...
Scully Posted September 26, 2021 Report Share Posted September 26, 2021 15 hours ago, Saltings said: hydroscopic the wrong word acrylics dispel rain droplets however in humid weather moister passes through a bit like goretex oil based paints are not the same anymore inc red oxide primers dont work as they did linseed oil has been removed a moisture metre is a handy tool when there is doubt In humid weather acrylics just take longer to dry, that’s all. Once dry they’re fine. Oil/solvent based paints are as good as they ever were, including red oxide. As a professional I wouldn’t use them if they weren’t. Quote Link to comment Share on other sites More sharing options...
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