I have noticed that between the worktop and the row of tiles directly above is usually either cement based grout that cracks and/or silicone that turns mouldy around the sink.

Could the gap above the worktop be filled with expoy grout or flexible grout instead and avoid both the mould and the cracking?

I am not a tiler I am a cleaner of tile and grout amongst other things.

Cheers for filling me in.

Originally Posted by rich hand

I have noticed that between the worktop and the row of tiles directly above is usually either cement based grout that cracks and/or silicone that turns mouldy around the sink.

Could the gap above the worktop be filled with expoy grout or flexible grout instead and avoid both the mould and the cracking?

I am not a tiler I am a cleaner of tile and grout amongst other things.

Cheers for filling me in.

i use an anti-bactrial mould resistant silicone and don't have any probs,grout is a no-no

As above, mine contains Microban anti bacterial

And as above again....

As above.

ditto

Is this silicone with Microban different from the usual mould resistant grout as available in B&Q? I find that to be pretty poor. I've used it many times and the mould still appears.

Just out of interest, how would epoxy grout work in this instance?

Epoxy grout does not come in a tube so applying it as silicone wont work, it will be a different colour to your wall grout as well. B&Q silicone is something I do not use, try dow corning or a similar quality make, and dont use your finger to smooth after it has been in your mouth, no wonder it goes black.

Thanks diamondtiling but struggling to find a dow corning supplier and certainly dont know of any quality silicone brands hence having shopped at b&q.

re. epoxy grout, I was only thinking of applying it as normal to the bottom row of tiles and surely the white epoxy would match up?

There is no guarantee it would match up. If you bought white grout from one tile shop and white grout from another they would both be different shades, your trying to match epoxy grout to powdered grout, more chance of platting fog I think.

epoxy grout is not recomended for movement or expansion joints

Dow Corning 786 Food Safe Sanitary Silicone - Screwfix.com, Where the Trade Buys#

So can I assume that Dow Corning silicone will not go black after 6 months as with Uni bonds anti mould silicone?

Thanks for the info.

I use Dow Corning 785 for most of my silicone jobs and have had no issues. Just make sure that the silicone is "high modulus" and you should be fine .