I've just rolled back the edge of the carpet for the first time on the solid ground floor of my 1970's house and am slightly baffled by what I've found.
On top of the black plasticky damp proof layer are wafer-thin (about 2mm), brittle grey-coloured tiles. They have very fine gaps between them which have no grouting; I can see the black damp proof layer in between. There is no 'screed' as I understand the term.
Does this floor design have a name, so that I can Google it and find out more?
I have no damp problems that I'm aware of, but am concerned that, as gripper-rods have been tacked down in several rooms, the tacks must have penetrated the damp-proof layer all over the place. Will this cause problems in future?
The reason I've rolled back the edge of the carpet is that I'm having some new patio doors installed in a couple of weeks' time. The wafer-thin "tiles" are quite badly broken-up near the current doors, leaving the black damp-proof layer visible. I imagine when the new doors (with new cill) are installed, some kind of sealant will be applied between the damp-proof layer and the new cill, so that will be okay. But is there anything I should do (before or after) to replace the broken tiles? And if I take up any of the gripper rod, will this open up the holes made by the tacks and cause problems?
On top of the black plasticky damp proof layer are wafer-thin (about 2mm), brittle grey-coloured tiles. They have very fine gaps between them which have no grouting; I can see the black damp proof layer in between. There is no 'screed' as I understand the term.
Does this floor design have a name, so that I can Google it and find out more?
I have no damp problems that I'm aware of, but am concerned that, as gripper-rods have been tacked down in several rooms, the tacks must have penetrated the damp-proof layer all over the place. Will this cause problems in future?
The reason I've rolled back the edge of the carpet is that I'm having some new patio doors installed in a couple of weeks' time. The wafer-thin "tiles" are quite badly broken-up near the current doors, leaving the black damp-proof layer visible. I imagine when the new doors (with new cill) are installed, some kind of sealant will be applied between the damp-proof layer and the new cill, so that will be okay. But is there anything I should do (before or after) to replace the broken tiles? And if I take up any of the gripper rod, will this open up the holes made by the tacks and cause problems?