Liquid damp proofing on walls

[goldeagle]

In my 1930's extension, the solid wall has an existing DPC but the concrete floor has no DPM. The concrete floor is below the DPC level so currently gets damp.

I intend to follow the liquid DPM/self-levelling 'stickys' on the Flooring thread, but wondering what to do with the section of wall below the DPC. I need to waterproof this somehow to ensure no damp gets through the wall.

At the moment was just planning to use some liquid DPM on the wall (which is Bath Stone) but wondering if anyone else had any opinions on what the best options would be? Planning to use this stuff - http://www.screwfix.com/p/cementone...p-proofer-waterproofer-dries-black-5ltr/36405

Photo below shows the situation - the existing DPC is on the red line, and planning to apply the liquid DPM below this line. Appreciate any thoughts.

Untitled

• goldeagle
• 3 Apr 2015
• 1

 

[freddiemercurystwin]

If the water pressure is forcing its way the chances are it will just blow any liquid applied membrane off the wall unless there's something there to hold it there, like a skin of masonry. So it may or may not work.

Anyway have a browse through these links to get a grasp of the various tanking methods and their pros and cons:

//search.diynot.com/forum_sear...reddymercurystwin&search=Search+Forum&stype=0

//www.diynot.com/forums/viewtopic.php?p=1201435#1201435