Recent content by JohnATC

Not a proper cavity & suspect it's bridged at bottom

This floor meets the wall below the dpc too, I'm looking at those damp proof creams on ebay, wonder if I could inject those vertically down into the clay along the wall & top off with epoxy grout? It's not very wet, but does get damp when it rains. What I'm really looking for is some kind...

OK, so I took up some of the old tiles & it looks like the "clay" between wall & concrete is about 3 inches wide here, I need to seal this for damp before laying new tiles. What is the best way to do this using modern materials? I wonder if SikaDur Epoxy patching mortar from B&Q might be...

I need advice on an old concrete floor. The floor meets the wall below the damp course. There's no modern membrane up the wall, instead there seems to be a 1" wide vertical layer of fine gravel/sand next to the wall, then clay before the concrete starts? (see pictures) The...