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- 17 Feb 2021
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Hi Folks
I've recently patched up some old sills + external walls with some Cementone render repair stuff and painted over with Sandtex Black exterior.
As you can see from the pics, I'm getting a white residue coming through. Any idea what this is and how I fix it?
Cheers,
Pat
I've recently patched up some old sills + external walls with some Cementone render repair stuff and painted over with Sandtex Black exterior.
As you can see from the pics, I'm getting a white residue coming through. Any idea what this is and how I fix it?
Cheers,
Pat