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Problem Solver - Water Ingress
Other Problems
Is caused on unsound exterior brickwork or render where the surface has broken down, allowing water to penetrate the surface and spread. Correct the cause of the water ingress first and allow to dry out thoroughly.
Preparation
Correct the source of water ingress and allow the area to dry thoroughly. Dry brush with a stiff bristle brush to remove loose material, then wash down to remove surface contaminants. Repair any cracks or blown render.
Wash down to remove any surface contaminants
If painting, check for cracks or areas of blown render where water could penetrate such as behind downpipes and gutters and make good.
Topcoat
Check the pointing and surface is sound, otherwise make good and if leaving bare, treat with a suitable silicone water protection.
or
Apply a stabilising solution to consolidate the surface and ensure good adhesion.
