by Hector »
Sat Nov 29, 2008 4:35 pm
I've thought of this solution myself for an outbuilding I have, constructed by the previous owner who located it at the bottom of a gradient. My floor is rotting also.
Mine sits on an existing concrete drive so I was going to lay the new concrete floor on top and flaunch the outside edge with sand and cement to deflect surface water.
In your case I would have thought a damp proof membrane on a good sub strate would suffice, unless a brickie or ground worker can recommend otherwise. After all it's a shed and dependsnt on your budget