Our current rear tio consists of a large concrete area approximately 6m by 4m. We need to upgrade this and the simple solution is to lay paving slabs over the top.
My concerns lie with the close proximity of the dpm. Currently the concrete layer is only 100mm belw this level and with the addition of another layer of paving slabs it is going to take it to within 50mm of the dpm,is this acceptable?
If not, is there anyway aound it? By leaving say, a gap around the edge down to the old concrete layer or do I have to consider breaking up the entire concrete layer which is a good 3" thick. thoughts would be appreciated.
My concerns lie with the close proximity of the dpm. Currently the concrete layer is only 100mm belw this level and with the addition of another layer of paving slabs it is going to take it to within 50mm of the dpm,is this acceptable?
If not, is there anyway aound it? By leaving say, a gap around the edge down to the old concrete layer or do I have to consider breaking up the entire concrete layer which is a good 3" thick. thoughts would be appreciated.