Hi, just a quick question...
For a block and block wall (it will be built above an existing kitchen), my QS has given me a breakdown which has included 'cavity tray using 600mm DPM - 1 roll'.
Does this mean the builder simply lays a layer of DPM at the beginning of the build, on top of the existing wall?
Also, does a block and block wall need weep vents?
For a block and block wall (it will be built above an existing kitchen), my QS has given me a breakdown which has included 'cavity tray using 600mm DPM - 1 roll'.
Does this mean the builder simply lays a layer of DPM at the beginning of the build, on top of the existing wall?
Also, does a block and block wall need weep vents?