I recently had an extension built - a number of problems are now becoming apparent, unfortunately I wasn't around when the work was being finished. Anyway, this is probably an obvious point to those in the know but there is a plinth around the base of the extension - it has a metal strip along the top, and there is a gap behind it, perhaps 2-4mm. Rain water will presumably run down into that gap - I am wondering whether the gap should have been closed (if so with what?) or whether this is normal/correct and its to allow some sort of air circulation to allow moisture to dry out?
The same plinth is at the front of the property but the walls were rendered and the render protrudes beyond the plinth so water can't run down if that makes sense.
Many thanks
The same plinth is at the front of the property but the walls were rendered and the render protrudes beyond the plinth so water can't run down if that makes sense.
Many thanks
