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So when the patio was put in, did it raise the level of the garden? Has the bitumen paint resolved the problem (I think it unlikely that it would resolve in the long term, even if it did in the short term)?
The patio has been at in the property for many years and just I believe the soil was built up to lay the patio higher. The tenant says that the level was that high when they moved in, so this cannot be proved.
The bitumen has only just been painted on the wall and in fact the level is now higher all the way along than it was initially. My guess is that it is at least one foot above the original damp course.
I was told that a trench has been dug, the down pipe has been maintained. A drainage pipe has been laid in to take away water. The soil holding up the patio has been held back approx one slab width from the wall by using slabs on their side. The wall had then been painted and filled with shingle above the damp course.
I did not approve this type of work or give permission to do anything to our wall. My concerns are now long term damp issues developing and problems drying out the existing damp inside our property.
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