We had a shed built last year which is leaking at the base. The builder has agreed to raise the concrete floor and install a DPM lapping into existing DPC. We asked for another builder’s advice and he said that the DPM should have sand under it to stop it puncturing. However I thought I saw on see on some sites that you can put a membrane directly onto concrete but not hardcore?
Which is correct??
Also is it fair to insist the original builder specs out the repair in detail eg materials and methods? He is refusing to do so and just says he will fix it as noted above, but I prefer more detail ( not least to check it won’t be a bodge job).
Many thanks
Paul.
Which is correct??
Also is it fair to insist the original builder specs out the repair in detail eg materials and methods? He is refusing to do so and just says he will fix it as noted above, but I prefer more detail ( not least to check it won’t be a bodge job).
Many thanks
Paul.