LEVELING SLOPING CONCRETE Post your questions and get answers regarding all areas of drives, pathways and patios

[dannycooper]

I have a concrete driveway which slopes to one side. I want to lay new concrete over the top to level it in order to build a 3m x 3m shed. Are there any considerations to be aware of and will the new concrete bond ok?
Also is there a special technique for doing this??
Thanks

Danny

[superqaz]

i just spoke to a concrete specialist at Tarmac , he said the if the new slab is bonded to the old one it will crack like crazy paving, because the old one will not move as its cured but the new one will move. some sort of DPM is the answer

[welsh brickie]

if the original concrete is stable, and your going to put new concrete on top the thickness needs to be a minimum of 100mm its also best to use a reinforcing mesh.
To bond the two layers together use a pva solution and pour it on and brush it in