Silicone or not?

[ceekay]

Probably a typical novice question but installing a new marmox trap in a newly installed marmox shower lay tray and was wondering if the rubber seal supplied is adequate to seal the trap or if most of you like to smear with a silicone (or equivalent) sealant onto the rubber to tray seal? I've also been told this would eventually break down the rubber seal but not sure how true? Just that once installed and tiled it will be the kitchen ceiling down if I had to get at a leaky seal?


would appreciate any expert advise?

 

[beanz]

I haven't used the Marmox trap, but I trust the rubber seals on the McAlpine traps. I only resort to silicone if I have no other option.

 

[Qwerty]

No silicone needed. Tighten up by hand and all is good!

 

[ceekay]

Thanks much appreciated. I take it this is from your personal experience with the marmox trap? I only ask as most of our friends on the plumbers forum seem to think otherwise so thought I would ask the wet room specialists who use this product regularly.

 

[Qwerty]

Thanks much appreciated. I take it this is from your personal experience with the marmox trap? I only ask as most of our friends on the plumbers forum seem to think otherwise so thought I would ask the wet room specialists who use this product regularly.

Yes it is. Fitted countless dalmer traps and all good!

 

[ceekay]

Yes it is. Fitted countless dalmer traps and all good!

Cheers much appreciated but while we are talking Dalmer traps which way does the rubber go up? Both sides has a lip although one lip is taller than the other and also one side is like an old record with lines going around inside the lip but the other side has no lines? So Which butts up to the tray and which side sits on top of the the plastic trap?
thanks

 

[Qwerty]

Lines to former

 

[ceekay]

Lines to former

Cheers for that but for the non educated the former I take it is the showerlay tray?

 

[Qwerty]

Yes

 

[ceekay]

Yes

Okay Plantec thanks for your help I will be doing it as you suggested.

 

[TJ Smiler]

Okay Plantec thanks for your help I will be doing it as you suggested.

Good idea mate

 

[ceekay]

Cheers much appreciated but while we are talking Dalmer traps which way does the rubber go up? Both sides has a lip although one lip is taller than the other and also one side is like an old record with lines going around inside the lip but the other side has no lines? So Which butts up to the tray and which side sits on top of the the plastic trap?
thanks

finally got back on the wet room and I had left the Dalmer shower waste that I had routed outside full of water to check for leaks as I had sealed the outside end. The thing is there are no leaks but the trap is only holding water half way up the trap and therefore there is an air gap in the top of the waste pipe? I have checked the tray and trap are level which they are but once I let water flow out the end of the waste pipe (into the garden) the water level in the trap seems to drop too low? Surely this will allow waste gases from the soil pipe back through? Any thoughts?.

 

[Qwerty]

No it won't so long as you use the internals of the trap as it prevents any air through. The rubber seal at the top if the internals create a tight seal also.

 

[ceekay]

Thanks Plan Tec that puts my mind at rest. I had put all the bits and pieces back in the box so didn't occur to me as the trap was just on test so to speak. Much appreciated pal.