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Porous Painted Render and Treating to Prevent Damp

Posted: Tue Nov 15, 2016 2:28 pm
by glynnh
Hi, I am having a problem with old painted render which is porous, as there are signs of damp penetrating through to the inside walls: the house is 1940s brick cavity walls. I have repaired all cracks and plan to repaint the walls then coat with a water repellant. Can anyone recommend a suitable product?
Many thanks.
GlynnH