My tiler uses BAL tanking kit. Paints and Bonds everything he can and tapes out all the corners with the mesh.
At the start of the job he offers the kit to me and shows me the price. About £50 a tub. So I bought two tubs and bal-bonded everything in site. Including the neighbours cat... (well nearly) because its my home and I thought for the extra £50 its peace of mind.
My wet room is built on 12mm ply which he laid down prior to me tanking it. Then a week later he put the porclain tiles down with flexible adhesive.
The problem with me was that I felt I need to "Get my monies worth" and so every night for a week I would walk about the site with my grey paint brush painting and repainting the BalBond over everything with the idea that its belts and braces.
Apparently this is not the thing to do and the advice was that I might have over done it. So there was no guarantee after that.. Opps.
Result? This is my wet room four years on.
So far.... NO LEAKS !!
PS: For those of you who have bought 365diamond drills from us **Yes** that is the shower in the packshot. And yes we did use the drills to place the body jets slap bang in the middle of 600x300mm very hard tiles.
Not had to tank a bathroom floor to date and i've fitted many bathroom suites/tiled, to many to remember but i've been asked to fit a "wet room" once last year which involved knocking a load bearing wall down and move a door way.
Needles to say a made my excuses and left.
PS all the floor joists were going the wrong way for the waste pipe!!!!!!!:huh2:
I've used Ardex WPC for walls and Tilesafe for wetroom floors and "dodgy" walls (i.e. plywood or MDF), but never thought about tanking a bathroom floor - might start discussing it with customers though.
If you give them the choice, you are only offering a professional opinion and not trying to rip them off, surely??