Sealing - Jura Limestone

Matt1234 · Jan 27, 2018

Im laying 600x400x15 Jura Beige honed tiles on my kitchen floor, and have received conflicting advice!

I bought LTP Mattstone with the tiles, along with the recommended adhesive and grout.

A builder friend advised to seal the front and back before installation which I’ve been diligently doing in batches.

I popped into Topps Tiles earlier to get a trowel, and the bloke told me that I’m wrong and that by sealing the underside the adhesive won’t stick.

But then I’ve just read someone on here in another thread advise to do front, back and sides.

I’m a bit confused - are Topps Tiles talking out their overpriced bottoms?

Matt1234 · Jan 27, 2018

To add, I’m using Kerakoll H40 Eco Marmorex - Rapid Set Adhesive - White and Kerakoll Eco Flexible grout 0-5.

Bill · Jan 27, 2018

LTP Mattstone is an impregnating sealer so it is fine to use on the back of limestone. Mind you any sealer will be fine so long as you know what is the correct fixing method.

Jura is very dense and is less likely to stain than other natural stone.

Matt1234 · Jan 27, 2018

Is it worth doing the edges of tiles if I’ve done the front and back?

Bill · Jan 27, 2018

Just to add..... do a test if you have time.

Do one with and one without sealer and see if they stick.

Bill · Jan 27, 2018

Matt1234 said:
Is it worth doing the edges of tiles if I’ve done the front and back?

Yes you can do the edges too.

Matt1234 · Jan 27, 2018

Thanks - when you say correct fixing method...

I’d bought a trowel with rounded 20x10 teeth, and was going to also backbutter the tile with a smooth coat (thickness ??).

I’ve also bought a load of perfect level master clips and wedges (thick version) plus 2mm and 3mm spacers (undecided currently but leaning toward 3mm grout lines).

The floor was covered with Lino previously and is screeded (circa 7 years old) so was just going to clean and dust it - but I’d been reading up on primer and thinking that may be required too?

Bill · Jan 27, 2018

Your fixing method is fine, it won't do it any harm to prime the floor beforehand.

By fixing method, I was referring to other techniques like fixing in sand and cement, semi dry or wet. Both of these methods required some natural stones to be sealed before fixing as the cement could stain the stone. Alas, it is a dying art in our trade.

Matt1234 · Jan 27, 2018

Thanks - any recommended primer?

Bill · Jan 27, 2018

Any SBR type will be fine.

Bill · Jan 27, 2018

Post photos of your job, I love natural stone floors.

Matt1234 · Jan 27, 2018

This was while sealing the first batch

Matt1234 · Jan 27, 2018

Is this stuff (Everbuild) just as good as BAL SBR? £20 vs £50

SBR Bond Bonding Agent 5L - https://www.toolstation.com/shop/p18528?table=no

Qwerty · Jan 27, 2018

Matt1234 said:
Is this stuff (Everbuild) just as good as BAL SBR? £20 vs £50

SBR Bond Bonding Agent 5L - https://www.toolstation.com/shop/p18528?table=no

Yes

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Qwerty

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