Waterproof Shower - TilersForums.com

[Ilovesun]

Thx once again, there is obviously more than one way to approach this waterproofing! I wish I had just installed it like the last one , plain old plasterboard no tanking and tubbed adhesive albeit with upstands And smallish ceramic tiles
But now I've read about it I feel I should do it properly!

What is difference between adhesive sealant and silicone rubber sealant? Is dow Corning the silicone rubber one, can you let me know an example of the other type?

 

[SJPurdy]

If you were using Wedi board then they have there own sealant to joint all the boards which is very strong and negates the need to tape over joints.
I do not know if Marmox have something similar.
I have used "the works" to pre seal shower trays to tanked or backer boarded walls, and found it to be good.
For the silicone rubber Mapei do a good range of colours to coordinate with their coloured grouts and I have found these bond very well. For white or clear I recommend the Dow Corning 785. Beware of cheaper silicone rubber sealants as although some may be ok, I have come across some poor ones (don't stick, or don't set very well).
When I have tested various silicone sealants and other sealant adhesives onto a glazed tile and let them set I found the adhesive sealants (I can't remember all the brands I used but the works was one) bonded to the tile beter than the silicone rubber sealants hence why I have choosen to use these for pre-sealing.
Do make sure that the floor is rigid under the tray and that the tray is solidly bedded onto it, and that the marmox wall boards are correctly fitted (stud spacings, noggins, etc etc); otherwise any method of sealing that joint is going to be tested/exceeded.

 

[Ilovesun]

Many thanks, I will take a look at the works, in past I have used dow Corning for everything.