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I have some building experience – was suspicious of Damp Proof Courses from a structural viewpoint, but I’d like to be sure if this is the case. I’ve has some experience with building work in the past and have heard about various issues with using DPC’s.
I know they are typically just black plastic sheets between brick/stonework a few courses up from the foundation, to stop the damp rising from the ground up, but I don’t know how much of a problem this really is. I’ve been told about they can cause a wall that is in construction to be knocked over with a small bump. It worries me that the wall integrity is affected by these sheets. It worries me how easy they can cause a wall to be shifted – I don’t want to use them if they are an additional risk. Does anyone know any more about whether DPC’s compromise the integrity of the walls? Have you had any issues that they have caused? Are they worthwhile for the sake of just avoiding damp?