Sealants

[imroberts]

I have a couple of jobs on the agenda and I wanted to make sure I was using the best sealant for the job.

1) Replacing a toilet which will need sealing around the base, between the pan and floor tiles. I believe the floor tiles are standard ceramic floor tiles.

2) Re-sealing between the kitchen worktop and the upstand, as the existing sealant is pealing off. Both the worktop and upstand are laminated chipboard.

I assume a standard sanitary sealant such as Dow 785+ or 785N is appropriate for both jobs?

What's the difference between 785+ and 785N and which is best for these jobs?

 

[Burnerman]

785+ is a sealant that cures with the release of acetic acid, hence the vinegar smell.....785N is the acrylic variant.
I prefer the + as it cures a little quicker but they are first class products and an excellent choice......the + is more difficult to remove so its best to get it right first time!
John

 

[Nige F]

785+ is a sealant that cures with the release of acetic acid, hence the vinegar smell.....785N is the acrylic variant.

John

Neutral curing silicone, John. I like that type myself because it sticks to uPVC and the acetic stuff don't

 

[Burnerman]

Any comment on the best type to adhere to acrylic shower trays Nige?
John

 

[imroberts]

Neutral curing silicone, John. I like that type myself because it sticks to uPVC and the acetic stuff don't

That's interesting, I wondered why I'd had issues with the 785+ sticking to uPVC in the past yet sealants used by other people seemed fine!

Would the N variant stick better to the laminate worktops? Is there any downside to using the N over the + for sealing the toilet to the floor tiles?

 

[Nige F]

Once I found out about neutral curing I never went back ! The only downside, possibly is it sets harder than acetoxy, not a lot but if you set out to want to re do it later for some reason, I guess the acetic stuff might be better .