40mm to 50mm Threaded Reducer (Shower Waste)

[Aquarius]

One of these? Straight Connector - Multifit x BSP Female thread - https://mcalpineplumbing.com/plastic-chrome-fittings/multifit-waste-fittings/s29c-straight-connector-multifit-x-bsp-female-thread

 

[gmartine]

You've got a mix there of compression and solvent, really the thing to do is use all solvent. Mark the position of where the trap should be and solvent it in place and then lower the shower tray in place. Oh I'd also insulate under the tray or it'll sound like a monsoon is hitting the tiles if that is an upstairs bathroom with a power shower.

 

[Eddie563]

One of these? Straight Connector - Multifit x BSP Female thread - https://mcalpineplumbing.com/plastic-chrome-fittings/multifit-waste-fittings/s29c-straight-connector-multifit-x-bsp-female-thread

I guess that might be it. looking at the technical drawings a T29 would be what I'm looking for.

 

[Eddie563]

You've got a mix there of compression and solvent, really the thing to do is use all solvent. Mark the position of where the trap should be and solvent it in place and then lower the shower tray in place. Oh I'd also insulate under the tray or it'll sound like a monsoon is hitting the tiles if that is an upstairs bathroom with a power shower.

I am in a first floor apartment but its the car ports that are under me, source is direct from a combi boiler to a mixer.

 

[gmartine]

Still a good idea to insulate under the shower tray even to keep your tootsies a little warmer. Just go to a DIY shed and buy a roll of loft insulation.