crispy_wafer Posted November 14, 2023 Share Posted November 14, 2023 Morning all, I'm Finalising the first fix plumbing in one of the bathrooms and I'm trying to work out how to set the depth of the wall plate elbows for shower outlets. Does it even matter, is it a non issue to be concerned about? Can I just thread in a 1/2 inch thread extension to bring closer to the tiled surface, if I need to? Also, I have PTFE tape, Fernox Hawk white, water hawk and rectorseal tru-blu at my disposal, I've only really used PTFE tape in previous one off tasks. This thread sealant stuff, I guess must work or they wouldn't sell it, do I just paint a glob of it onto the threads and tighten? Any special methods of use worth knowing? Link to comment Share on other sites More sharing options...
Jenki Posted November 15, 2023 Share Posted November 15, 2023 It is important, but it will depend on the fittings. Some are female so you can use a brass nipple in between the elbow and shower outlet. The nipple( threaded bar with a hole), and be cut to length and filed flat to seal against rubber and fibre washers. Others have a separate fitting that screws in to the elbow and o rings to seal against the outlet. When fitting these I always get the parts on site and make the decision from there BEFORE installing the pipework. Post pictures of what you've got and help will follow.😉 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 15, 2023 Share Posted November 15, 2023 Work out your wall depth properly. You will have the wall studs then whatever board you use, then whatever finish you choose. Set your brass fitting 3 mm inside the finished surface, when you are ready to fit the outlet, you use CT1 to seal around the brass fittings, this way if you get any leak between the connections it will run down the outside of the finished wall and not into the wall if you haven't picked your wall finish then just leave a long leg of pipe sticking out and wait until you have made a decision, absolutely no point boarding the wall without knowing the finish. 1 Link to comment Share on other sites More sharing options...
crispy_wafer Posted November 15, 2023 Author Share Posted November 15, 2023 4 minutes ago, Russell griffiths said: if you haven't picked your wall finish Thanks, I've absolutely no idea on final wall finish 🤣, I'll get the Mrs to do some browsing, then get the tile thickness of the sort of things she likes. Then I guess from there on in, I can just filter for 9mm tiles or whatever and tell her to pick something at that depth. Would you set tile adhesives at different depth's depending on tile, or is it just a standard thickness? We are not doing anything too special here. The known's at this point 20mm tile backer So I need to know: Tile Depth Tile Adhesive Depth I've ran HEP to the outlets because it was easy to thread through the studs, and assumed I was going to use a 1/2" to 1/2" wall plate elbow with a HEP 1/2" connector. Now thinking about it the angled wall plate wont project far enough through the backer board + finish. And I don't know at this point how long the thread is on the wall outlet and rainfall head as I'm waiting for them to turn up. What do the pro's do? I don't mind if I have to start again if I have to, it's only a bit of time, and all part of the experience! Link to comment Share on other sites More sharing options...
crispy_wafer Posted November 15, 2023 Author Share Posted November 15, 2023 This is the fella I've been watching on youtube... He uses couplings to set the depth, guess this is ok to do? Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 15, 2023 Share Posted November 15, 2023 Read the tread about diy plumbing, I think this was covered in detail about a week ago. Changing from hep to copper and then to a brass back plate elbow. Its by @Thorfun I think. 2 1 Link to comment Share on other sites More sharing options...
crispy_wafer Posted November 15, 2023 Author Share Posted November 15, 2023 (edited) 10 minutes ago, Russell griffiths said: Read the tread about diy plumbing, I think this was covered in detail about a week ago. Changing from hep to copper and then to a brass back plate elbow. Its by @Thorfun I think. Will do, I tend to follow it, but that thread moves very quickly at times I may have missed the bit about depth... Sorry my poor explanation previously. I'll be using brass wall plate elbows with the hep 1/2 - 15mm plug on it. Edited November 15, 2023 by crispy_wafer Link to comment Share on other sites More sharing options...
Thorfun Posted November 15, 2023 Share Posted November 15, 2023 28 minutes ago, Russell griffiths said: Read the tread about diy plumbing, I think this was covered in detail about a week ago. Changing from hep to copper and then to a brass back plate elbow. Its by @Thorfun I think. 23 minutes ago, crispy_wafer said: Will do, I tend to follow it, but that thread moves very quickly at times I may have missed the bit about depth... Sorry my poor explanation previously. I'll be using brass wall plate elbows with the hep 1/2 - 15mm plug on it. think the discussion starts about here the thread does move quite quickly sometimes.....unlike me most of the time! 😆 Link to comment Share on other sites More sharing options...
Thorfun Posted November 15, 2023 Share Posted November 15, 2023 here's how i did mine. hep2o to copper just felt right and it's solid. i'm sure @Pocster won't agree with it though. 1 1 Link to comment Share on other sites More sharing options...
crispy_wafer Posted November 15, 2023 Author Share Posted November 15, 2023 Has anyone seen @Pocster, probably got trapped in one of them kitchen cabinets! I think, as original plan, I'll set them on a noggin then use an male/female 1/2" extension iron to the correct depth. 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted November 15, 2023 Share Posted November 15, 2023 (edited) Plumbing isn't just a trade. Its a language too. Nipples, irons, CT1, tapered threads, 92.5 degree bends, noggins.......... 'King nightmare. Edited November 15, 2023 by ToughButterCup 1 2 Link to comment Share on other sites More sharing options...
Thorfun Posted November 15, 2023 Share Posted November 15, 2023 45 minutes ago, crispy_wafer said: Has anyone seen @Pocster, probably got trapped in one of them kitchen cabinets! I think, as original plan, I'll set them on a noggin then use an male/female 1/2" extension iron to the correct depth. the 20mm backer board is making it harder for you i think as that's an extra 8mm you need to bring the socket out by. we noggined at 300mm centres and used 12mm backer board. it wasn't too painful to do tbh. not sure on the price difference between 12mm and 20mm and then the cost of the timber. Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Share Posted November 15, 2023 2 minutes ago, Thorfun said: the 20mm backer board is making it harder for you i think as that's an extra 8mm you need to bring the socket out by. we noggined at 300mm centres and used 12mm backer board. it wasn't too painful to do tbh. not sure on the price difference between 12mm and 20mm and then the cost of the timber. Nothing wrong with that . Just make sure you have backer board ( or whatever ) to hand , tiles and the final fitting . Because if you need to adjust the depth after it’s tiled it’s a pig 🐷 1 Link to comment Share on other sites More sharing options...
crispy_wafer Posted November 15, 2023 Author Share Posted November 15, 2023 All my studs are set at 400 centres, right inbetween sizes, So I guess I could flip the boards horizontally then nog horizontally at every 300 that could work. My stud wall will end up looking like a chess board though! Link to comment Share on other sites More sharing options...
Thorfun Posted November 15, 2023 Share Posted November 15, 2023 7 minutes ago, crispy_wafer said: All my studs are set at 400 centres, right inbetween sizes, So I guess I could flip the boards horizontally then nog horizontally at every 300 that could work. My stud wall will end up looking like a chess board though! that's actually what we did for most of them as i already had cables and pipe run when i found out about the 300mm centres. 400mm might be ok but maybe check with the manufacturer of your chosen backer board, or with your tiler as i'm sure they'll have the experience to know. Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Share Posted November 15, 2023 @Thorfun Apart from concealed hep20 fitting . Presume there’s another behind the vertical waste stack ? I in those circumstances let the hep20 pipe bend round assuming it’s not too tight to eliminate joints and potentially leaks ( though Hep2o is awesome and I’d doubt a leak ever ) Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Share Posted November 15, 2023 1 hour ago, ToughButterCup said: Plumbing isn't just a trade. Its a language too. Nipples, irons, CT1, tapered threads, 92.5 degree bends, noggins.......... 'King nightmare. Not too mention the language that’s used when installing such as “for (expletive deleted)s sake why doesn’t that fit “ ” why the (expletive deleted) is that imperial and that metric “ ” bollocks - that’s wrong “ ” shit - why’s there water on the floor “ ” bastard “ 4 Link to comment Share on other sites More sharing options...
Thorfun Posted November 15, 2023 Share Posted November 15, 2023 1 hour ago, Pocster said: @Thorfun Apart from concealed hep20 fitting . Presume there’s another behind the vertical waste stack ? I in those circumstances let the hep20 pipe bend round assuming it’s not too tight to eliminate joints and potentially leaks ( though Hep2o is awesome and I’d doubt a leak ever ) yeah. i tried to use as few joints as possible and any joints i did use are in the room. so it's solid hep2o from manifold to room. sometimes it just wasn't possible to bend the hep2o. 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 15, 2023 Share Posted November 15, 2023 if you dogleg it like this you can get it closer to the front of the board. 2 Link to comment Share on other sites More sharing options...
Jenki Posted November 15, 2023 Share Posted November 15, 2023 5 hours ago, Russell griffiths said: if you dogleg it like this you can get it closer to the front of the board. Off topic... Cracking view 1 Link to comment Share on other sites More sharing options...
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