Hello,
Searching through the old posts, this subject has already been discussed to death :
- posted
14 years ago
Damp spots, wall already injection treated for rising damp
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- posted
14 years ago
Thompson's Water Seal?
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- posted
14 years ago
The only effective treatment for damp is to find the cause and repair it. Injecting things into brickwork is rarely effective
NT
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- posted
14 years ago
All that will do is trap the moisture in the wall (assuming the wall is actually damp and you don't just have condensation) and cause the coating the fail again.
You need to find out, or work out, why the interior wall is damp not just splash waterproof coatings about willy nilly.
All the normal questions:
What is the walls construction? Are there anly leaky gutters or down spouts that wet the exterior of the wall? Is the room heated? Is the room ventilated? Have the windows being changed from single glazed normal casement to double glazing? Is the room used for drying things? clothes, etc Is the room close to a kitchen, bath or shower room? Has there been any furniture close to the bit of wall with mold?