Glee

Big jimbo yes I have placed the beams on a strip of dpm but do I put a dpm sheet above the subfloor? cheers

Hello and help! Do I need to put a dpm on top of a subfloor/ underneath the block and beam as well as on top of the beams. It will have a 300mm void as well as air vents. many thanks Gary

Thanks that is immensely helpful and appreciated

That’s just an acrow prop

Hi I am due to pour concrete into these footings and as you can see the pour also creates a padstone underneath existing concrete floor to support a steel column which will be load bearing. The concrete will be poured to about half up the existing floor slab. Do I need anything underneath the existing floor slab like a bonding agent before pouring the new concrete? all help appreciated