Does anyone have a solution to the problem of salt coming out of old walls so that they will not hold paint?
Posted: Wed Nov 6, 2019 8:44am
This might help you.
https://www.dulux.com.au/applicator/technical-advice/performance/efflorescence
Posted: Mon Feb 17, 2020 3:26pm
Your problem is sulphur, it comes out of the mortar
Posted: Mon Apr 19, 2021 1:39pm
The big problem in the coastal regions is that the construction sand is not washed and the high concentration of salt results in a exfoliation of the walls. There is not much to do about but accept it or repair the walls sporadically. I would not recomend you to buy expeensive painting products, they will not work.
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