Thickness of base for a shower tray.

[amfisted]

No.

Is the pipe squashed into an oval?

No, it’s perfectly round as far as I can tell. Brand new 22mm pipe won’t slide into the fitting either, and in fact the edges more or less match up. I bought 22/15 solder ring reducers from 2 different outlets, Screwfix and an Amazon seller, but neither works. Flummoxed, in all honesty.

 

[endecotp]

I think you have probably got one of these:

https://www.screwfix.com/p/yorkshire-copper-solder-ring-fitting-reducer-f-15mm-x-m-22mm/46383

instead of one of these:

https://www.screwfix.com/p/flomasta-copper-solder-ring-reducing-coupler-22mm-x-15mm/75955

 

[amfisted]

No.

Is the pipe squashed into an oval?

No, it’s perfectly round as far as I can tell. Brand new 22mm pipe won’t slide into the fitting either, and in fact the edges more or lesss match up. I bought 22/15solder ring reducers from 2 different outlets, Screwfix and an Amazon seller, but neither works. Flummoxed, in all honesty.

I think you have probably got one of these:

https://www.screwfix.com/p/yorkshire-copper-solder-ring-fitting-reducer-f-15mm-x-m-22mm/46383

instead of one of these:

https://www.screwfix.com/p/flomasta-copper-solder-ring-reducing-coupler-22mm-x-15mm/75955

Thanks for that. I can’t get those links to work for me right now, but I’ll have a look at them on the Screwfix website later.

Edit: yes, I think I see how the problem might occur.

I'll buy a couple of the alternative fittings in case the current compression connector lets me down.

 

[Madrab]

If the pipe is definitely 22mm - measure it - and the end feed reducer won't fit - check it isn't a 3/4" to 15mm converting reducer.

Try this link - https://www.screwfix.com/p/flomasta-copper-solder-ring-reducing-coupler-22mm-x-15mm/75955

I've found some links through DIYnot fail all the time with a temp unavailable message - not sure what's going on

 

[amfisted]

If the pipe is definitely 22mm - measure it - and the end feed reducer won't fit - check it isn't a 3/4" to 15mm converting reducer.

Try this link - https://www.screwfix.com/p/flomasta-copper-solder-ring-reducing-coupler-22mm-x-15mm/75955

I've found some links through DIYnot fail all the time with a temp unavailable message - not sure what's going on

Thank you. Unfortunately that link doesn’t work either, but I get the picture. Next week I’ll be going to the plumbers merchant to buy the bits for the shower, so I’ll ask him about these wretched reducers whilst I’m there.

 

[amfisted]

Just one further question, hopefully. What size timber should I use for the noggins? The shower tray is 700mm deep, 900mm long and that depth will span two joists, but I need to incorporate a third joist for full support.

 

[amfisted]

Just one further question, hopefully. What size timber should I use for the noggins? The shower tray is 700mm deep, 900mm long and that depth will span two joists, but I need to incorporate a third joist for full support.

Well, I went for 3x2 in the end, and the floor is as solid as the proverbial rocky thing.

Thanks again to all those who provided advice.

 

[amfisted]

One final, final question, and it relates to the YouTube video from Skill Builder that @Wayners posted above.

The chap in the video recommends not using tile adhesive as the bedding for a shower tray, because with the tray being permanently fixed in position, stuck to the base with no flexibility, any movement of the floor could result in cracking. He then adds that if you're determined to use tile adhesive you should put a polythene membrane on top of the bed before installing the tray, and that way the tray is less likely to be affected by any movement of the floor. I wondered what forum contributors thought of that suggestion, because either tomorrow or Tuesday, depending on delivery times, I'll be doing that very job and it'll be too late to ask.

Cheers

 

[Wayners]

Tray manufacturer have a helpline?

 

[amfisted]

Tray manufacturer have a helpline?

Aye, fair point