Jura limestone appears to be rusting over time

[mreeves]

its in the stone (rusty spots), and i think 2 coats of stain stop is more than enough . Jura does not take in much stain stop

I agree its in the stone but there are more of these rusty spots appearing over time so keen to do something if possible to stop it happening further.

 

[Tony73]

i would leave them tiles alone if i was you, its nature mate

 

[Ajax123]

I agree its in the stone but there are more of these rusty spots appearing over time so keen to do something if possible to stop it happening further.

Im not sure there is anythingo be doe. Oxidation is a natural process.

 

[The D]

You could embrace it and love it your stone is beautiful rust spots and all.

 

[DHTiling]

It is mineral content within the stone, very common with this type .. i have just laid 155 mtrs of the beige version and it was the same... i like it really , adds character.

 

[swanman]

With limestone you need at least 5/6 coats of sealer then a wax top coat

 

[swanman]

Good answer deanotile you should love your stone warts and all

 

[DHTiling]

With limestone you need at least 5/6 coats of sealer then a wax top coat

Can i ask why that is required..? just out of interest.

 

[Topshop]

Why do I need to keep saying it - no wax on natural stone!!!!! Stone needs to breathe.

 

[Pebbs]

If you waxed any of my limestone.....well I wouldn't be happy, in fact Id be fuming. Stone needs to breath as Topshop rightly says.

Pebbs

 

[Ajax123]

Does the sealer not prevent it from "breathing".

Also if everything underneath is dry and the stone is dry why does it need to breathe.......

Just a little confused over this breathing lark cos modern buildings are simply not designed to do so.

 

[doug boardley]

my guess is oxidation, you're limestone must have some ferrus content. Not sure what you can do about it though.

 

[DHTiling]

Does the sealer not prevent it from "breathing".

Also if everything underneath is dry and the stone is dry why does it need to breathe.......

Just a little confused over this breathing lark cos modern buildings are simply not designed to do so.

If any moisture does come through a substrate , then if you use a topical sealer this can trap that said moisture in... when a substrate heats up and cools with room humidity or thermal heat, then as it heats and cools it can expel small amounts of moisture... Impregnators allows the stone to breath.. not literally breath lol but to allow passage of moisture from behind if required..

The best way to describe what i mean by air moisture etc,, say you left a pot of salt on the bench/table etc then it will get wet from air moisture..
So air moisture is always present ...

Not saying topical sealers cannot be used but in areas of wetting then deffo a bad idea..

 

[Tony73]

With limestone you need at least 5/6 coats of sealer then a wax top coat

some limestone one coat of stain stop, some 2-3 coats not more (any coat after-waste of money and time)

 

[Topshop]

Thanks for the explaination Dave.

I agree with you Tony. But, the term "coat" needs to be used carefully. Sealers should not be coating anything - they should be in the stone (penetrating) for best results - if they coat they are sitting on top and have been over applied. Any excess should be buffed off because it can adversely effect the stone too. The term "application" should be used. If footprints show or the stone is sticky the sealer has been over applied.