Silicone on rubber washers?

[JayJay1978]

This week I'm fitting a shower enclosure in our ensuite, Just wondered if the pro's use silicone when fitting the waste trap on?

I've heard its used on rubber washers and I've also heard it's not needed.

Thinking about it why have the washer at all if you're going to smear silicone all over it?

Tray: Mira Flight.

 

[bengasman]

Defo no silicone, just wet it a bit if you find it hart to move when dry.

 

[doitall]

No Silicon, or the washer will spread.

 

[JayJay1978]

Interesting, are you saying that plumbers who use silicone when fitting bath traps, basin wastes, shower wastes are doing it wrong?

Will it have more chance of leaking with the silicone, why do some MI's say to use it?



For some reson I feel like a Trebor mint, I cant think why.

 

[Razor900]

Interesting, are you saying that plumbers who use silicone when fitting bath traps, basin wastes, shower wastes are doing it wrong?

Will it have more chance of leaking with the silicone, why do some MI's say to use it?



For some reson I feel like a Trebor mint, I cant think why.

Which MI's tell you to use it??

When you tighten it the washers deforms and slides. Properly aligned you shouldn't use anything

 

[bengasman]

... with the silicone, why do some MI's say to use it?

Poooshfeet?

 

[JayJay1978]

Interesting, are you saying that plumbers who use silicone when fitting bath traps, basin wastes, shower wastes are doing it wrong?

Will it have more chance of leaking with the silicone, why do some MI's say to use it?



For some reson I feel like a Trebor mint, I cant think why.

Which MI's tell you to use it??

When you tighten it the washers deforms and slides. Properly aligned you shouldn't use anything

I'm sure when I've been fitting wastes I've seen the instructions say to use a bead of silicone when fitting together.

Don't get me wrong I'd prefer not to use it.

 

[JayJay1978]

... with the silicone, why do some MI's say to use it?

Poooshfeet?

Sorry?

 

[gassafeman]

Never, ever use silicone on rubber washers! Its as bad as pouring gravy on a rhubarb crumble.

I only ever use it (silicone grease) barring unions on bbu servicing, on the threads of pump valves. Never the washer though!

I can undo most pumps unions by hand if they fail 5, 10 or 15 years later - as long as it was me who installed the pump.

Paul

 

[bengasman]

... with the silicone, why do some MI's say to use it?

Poooshfeet?

Sorry?

That's alright, just don't do it again. Ever.
Pooshfeet waste, is always recommended to be eased with silicone.

 

[JayJay1978]

As a DIY'er I have a few plumbing books, I've got one here and it shows a picture of a rubber washer being bedded on silicone.

JTL level 2 page 317.

I'm thinking back to when our bath dripped from the waste when it was emptied, the rubber washer underneath just couldn't make a seal against the 'pitted' fibreglass. I used silicone there and it worked.

Ah pushfit, for some reason I read it as posh feet.

 

[bengasman]

..Ah pushfit, for some reason I read it as posh feet.

Thinking about them high heels again no doubt.

 

[gassafeman]

Try Trelor

Paul

 

[Agile]

Some of you seem to be talking about silicone setting sealant.

Others about silicone grease!

Tony

 

[Homesafe]

i have talked to a lot of plumber's and it's one of the fav. tricks they have is to use silicone sealant on waste's and even trap threads