Why is my recently applied masonry paint peeling?

John Conlin / 25 May 2018

A reader would like to know why his masonry paint is peeling just 18 months after painting.


The outside of our house is smooth rendered. It is in good condition with no cracks.

We repainted 18 months ago with good-quality masonry paint, but it has already started to flake. Why?


Did you pressure-wash the walls before repainting? If you are within three miles of the coast, the wall surfaces are likely to carry salt deposits that could be taken into solution by the water-based masonry paint. Similarly, in urban areas diesel deposits are an increasing problem. Or the paint may be incompatible with the previous type.

Send some paint flakes to the manufacturer, if possible also quoting the batch number.

Try 3 issues of Saga Magazine for just £3

Subscribe today for just £3 for 3 issues...

The opinions expressed are those of the author and are not held by Saga unless specifically stated.

The material is for general information only and does not constitute investment, tax, legal, medical or other form of advice. You should not rely on this information to make (or refrain from making) any decisions. Always obtain independent, professional advice for your own particular situation.