DIY Doctor UK DIY Forums

I am about to fit a "P" shaped acrylic shower tray.
The waste needs to be screwed up and tightened from above after the tray is down.
What is the best method to use to minimise the risk of leaks?
Do you recommend that I use a sealing agent of some type (plumbers mait etc)
TIA
Mervyn

personally, I would fix the waste trap before you put the tray in place. There should be no reason why you can't do this really. You can then add the further waste pipe afterwards.

I wouldn't use plumbers mait - this is more for joins of compression fittings rather than round the top of the waste exit in the tray itself.

You could use a sparing amount of silicone sealant between the top of the tray and the metal waste that sits in it - remember to let it cure (24hrs) before testing. If i am interpretimg your waste correctly, you have a hole in the tray through which you put the metal waste and then back nut underneath with a screw through the centre from the top? - if so you may get away with nothing at all if the washers are in place correctly, personally I would use a little silicone.

Thanks for that Nitro23456
The shower tray is a low profile model (B&Q) and is supplied with an all plastic low profile waste which sits on the floor.
The top part screws directly into the main body and the only seal supplied is the usual type which fits between the shower tray and main body of the waste.
The problem is that there is no access to the waste at all once the tray is fitted, so any leak and the tray has to come out.

then fit the waste prior to laying the tray and test it with a hosepipe in the garden.

Oops, just seen this post.

Use a sanitary silicon to seal the traps grate to the tray.