I had posted in the guest area but have registered now as there seems to be a wealth of info on here.

We're having an extension built and part of it will be a showeroom, approx 2m x 2.5m.
The current thought is :

Wedgdek former (so that the channel drain can be as close to the wall as possible).
NoMorePly 6mm on top of 22mm ply on top of joists (all over).
NoMorePly 6mm dot and dab on walls (where the shower is, screened off from the rest of the room).
Dura WP membrane.
UFH (not sure which yet).

Any thoughts?

I was thinking of ufh to take the chill off the floor and a towel radiator for the heat, although now i'm thinking ufh for the heat and electric towel rad to heat/dry the towels?

Thanks very much.
Owen.

in a room that size the u.f.h should be enough

My wife needs a warm towel though!
Hence the need for both.

i would put the towel rad in but wouldn't really be needing it as a heat source

Originally Posted by osmyth

I had posted in the guest area but have registered now as there seems to be a wealth of info on here.

We're having an extension built and part of it will be a showeroom, approx 2m x 2.5m.
The current thought is :

Wedgdek former (so that the channel drain can be as close to the wall as possible). Make sure you get the correct Purus kit for this

NoMorePly 6mm on top of 22mm ply on top of joists (all over). Why NMP here ?

NoMorePly 6mm dot and dab on walls (where the shower is, screened off from the rest of the room). If you are going to use Dura-wp to tank then plaster board is fine unless you think you have a weight issue ?

Dura WP membrane.
UFH (not sure which yet).

Any thoughts?

I was thinking of ufh to take the chill off the floor and a towel radiator for the heat, although now i'm thinking ufh for the heat and electric towel rad to heat/dry the towels?

Thanks very much.
Owen.

Owen..

wetdec, just taking all precautions I could really re waterproofing, as it's a house for life!

The Wedgedek comes with a 800mm drain so getting the correct gully for the joist layout and a metal cover for height adjustment (tile one doesn't have height adjustment).

Was thinking of NMP (or equivalent, open to ideas) for more waterproofing in the wet area and insulation in the dry area (for ufh).

By weight issue, you mean extra heavy tiles?

Thanks.

If you have 6/8mm to play with then up it to 28mm ply, NMP aint going to help waterproofing that is already done with the Dura membranes m8. This applies to walls and floors.

Thanks.

Just had a chat to the builder about options.

It seems like you can't really get 22mm wbp ply.

Does the whole floor need to be ply for tiling on, or is that just in the wet area? 18mm min (on top of joists)? 25mm better?

Would it be best to use dura-wp on the whole floor, not just the wet area?

thanks, Owen.

Originally Posted by osmyth

Thanks.

Just had a chat to the builder about options.

It seems like you can't really get 22mm wbp ply.

Does the whole floor need to be ply for tiling on Yes, or is that just in the wet area? 18mm min (on top of joists)? 25mm better? 25mm better yes

Would it be best to use dura-wp on the whole floor, not just the wet area? Yes as long as its ply'd properly and under 10m2

thanks, Owen.

Owen.............

Would it be best to use dura-wp on the whole floor, not just the wet area? Yes as long as its ply'd properly and under 10m2

Is this for de-coupling, so less likely for tiles/grout to crack?

Would an alternative to dura-wp on the dry area be a backer board, or would this have the same movement problems as ply?

Thanks.

I would mechanicly fix through the nmp on the walls as well rather than relying on dotting to hold the weight