Tiling to old cottage bathroom walls - Tile Advice

[Ttt1601]

Its been patched, a few times, the bottom by the door is that dpm stuff with s & c render over but most other areas that are now blown are hard wall and skim so I was assuming the render had blown and it had Ben patched at a later date with the gypsum

 

[Ttt1601]

Can you instal vents to counter any humidity behind a tile backer?

To the outside? They are 2 foot think flint walls, no hope of that without making a lots of mess on the outside

 

[LM]

Pilot hole from the inside out, with tenderness, then a wet core drill from the outside in? Or bring a company in to do it. It is possible!

 

[White Room]

To the outside? They are 2 foot think flint walls, no hope of that without making a lots of mess on the outside

With old walls like that they would flint inside and outside then all broken pieces thrown in between the the walls.

 

[Ttt1601]

Problem with core drilling in a flint wall is, you hit a flint it comes out whole and takes everything out with it. I'm in Hampshire, theres a reason we call the stuff Hampshire nugget's, it's everywhere and is a rubbish to work with lol. Cheers for the thought thou will run it past him, but tour right someone else will be coming out to drill the hole, then they can do the making good lol

 

[Ttt1601]

Right, went in to see this one and have a chat, he has decided he only wants half hieght round the room, so was thinking, d n d backer board to height then rile, no real issue? Only thing I couldn't think of was best way to finish the top? Would be too deep for a trim with the addition of the board, but not deep enough for a capping tile, he doesn't want a chamfered tile cut on top mitred at 45 to finish flat with top of tile and wall