Joined: July 2004
||Posted: 16 Dec. 2018,14:08
A commonly used tactic with these older properties is to create a free-draining area immediately adjacenet to the stonework/brickwork/masonry. The idea is to prevent any moisture residing against the house so it can't find a way in.....in theory.
The simplest way to achieve this is by using the equivalent of a 'splash strip', the 200-300mm wide strip of gravel you often see laid between paving and masonry. However, unlike far too many so-called splash strips, this one needs to go down to a depth of at least 300mm, and, preferably, be lined with a suitable geo-textile before being completely filled with a clean angular aggregate, a bit like that shown in the drawing here.
Other options rely on the use of a fin drain, drainage composite or "waffle board", as discussed here but these are often a more expensive solution, requiring greater depth and are pronbably best suited to what we might term "heritage" projects with generous budgets.
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