My house has a timber frame extension with tiles on the outside and i have a small damp problem inside near one of the corners.
After taking off a few tiles near the ground level, I noticed that there is like a black material under the tiles, probably what keeps the water and rain off my plasterboard I suppose.
Well I need to know what that black material is please as its ripped and rotted away at the bottom, so I thought I would buy some and patch it up.
So....does anyone know what its called and can i pick it up at a place like b&q
Thanks
After taking off a few tiles near the ground level, I noticed that there is like a black material under the tiles, probably what keeps the water and rain off my plasterboard I suppose.
Well I need to know what that black material is please as its ripped and rotted away at the bottom, so I thought I would buy some and patch it up.
So....does anyone know what its called and can i pick it up at a place like b&q
Thanks