External window sils

Joined
2 May 2026
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United Kingdom
Hello!

I'm not even sure if this is possible so any advice is appreciated.

Was hoping someone would be able to point me in the direction of a cement based product i could use to skim my external concrete window sils to renew them?

I don't want to paint them as its not to my taste, the plan was to clean and skim them to try and renew them of sorts.

I have attached a photo of one of my sils and a photo of the type of finish I am trying to achieve.

I will be starting on an out of sight sil to see how it comes up.

Thanks for reading and any input!
20260311_123430.jpg
0012188_concrete-cill-255mm-x-100mm-x-50mm_320.jpeg
 

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