Bathroom Question Tiling, waterproofing and heating!

Discussion in 'General DIY' started by Nitronick, 11 Nov 2009.

  1. Nitronick

    Nitronick

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    Not too sure where to put this but my next project is going to be the bathroom.

    Basicly at the moment we have no heating in the bathroom but as it's only a smallish room and above the kitchen no big deal but can be a bit nippy in the winter so need to look at heating. Add to that the rather poor wooden floor is starting to buckle mainly because I have kids who find it fun to splash half a bath tub of water over the floor when ever they get in the bath!

    So, my plan is to lay a tiled floor with underfloor heating and as it is over the kitchen I want it as near as possible 100% water proof. At the moment I'm thinking of applying some sort of waterproof leveling compound over the floor boards before laying the heating (have seen some electrical kits on line) and the tiles on top with a flexible grout. I'm thinking about extend the tiling as far under the bath as possible and then seal off the bath panel using silicone sealant.

    The pipes are already run along the side of the wall and enclosed in a tiled box (done by previous home owner) so once done hopefully will never need to lift the floor again.

    Simples? Yea right!

    My concerns and areas I need to look into are....

    1. Part P Electrical Work. Obviously I will need to have the heating laid or at least wired up by a Part P approved sparks.

    2. Lining boards with Ply or other type of board. Any Ideas what would be best?

    3. Which waterproof leveling compund can I use?

    4. Grout. Need one capable of dealing with heat and moisture without cracking.

    Any other advice would be appreciated as want to get everything sorted and in place for a possible start date around January or Febuary.
     
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  3. TicklyT

    TicklyT

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    Maybe best to ask in the tiling forum, but I would:-

    1. Speak to your electrician before you start. He may be happy for you to lay the flooring, and come along later to test and conect, or he may want to lay the heating mat or just inspect / test it before the tiles go down.
    Unless the room is VERY well insulated, UFH will probably do little to heat the room.


    2. Check the installation instructions of your chosen UFH system - they may recommend an alternative substrate.
    If the floor is in bad shape already, it might be easier to strip the boards out and replace them with 22mm WBP ply rather than mess about with levelling, then overboarding with 12mm ply etc. etc. A good chance to relocate any of the services in the room, or add a radiator if you decide you need one.

    3. See 2.

    4. You would need a flexible tile adhesive and grout, there's bound to be some movement in a wooden substrate. Some adhesives and grouts are 'waterproof' meaning they are unaffected by water, not that they will stop water leaking through the floor.

    Maybe consider a tanking system for the ultimate waterproof floor?
     
  4. Nitronick

    Nitronick

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    Looks like the UFH is out the window having had a discussion with the boss(wife). Now going to swap toilet and sink round, remove short wall between bath and shower cubical, replace with glass partition, extend bath room into hall way removing cupboard to give sense of space, fit new heated towel rail, smoth ceiling(its covered in ceramic tiles :confused: ) and replace lighting. Basicly the quick refurb is turning to a major redesign of the bath room.

    Please explain?

    Was up in the loft today and the bathroom has 4 halogen spots. When the previous home owner fitted them he decided to do away with loft insulation over the bathroom! No wonder it get's a bit nippy in there at times.
     
  5. Johnmelad502

    Johnmelad502

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  6. Nitronick

    Nitronick

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    Nice one!

    Tanking fits in pretty well with my plans, gives me the option to move everything in the bath room to maximise the space. So much for a quick refurb!

    Got a week off in Febuary so will attack the job then. Might even splash (no pun intended) out on a new bathroom suite.
     
  7. foxhole

    foxhole

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    You could change the lighting for the new super bright led's and replace the insulation in loft.
     
  8. Nitronick

    Nitronick

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    Good idea. Will add that on my list of things to research before I crack on with job.
     
  9. DIYnot Local

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