Indian Sandstone Picture Framing/Grout marks

[Boggs]

Good luck

 

[1sandyh]

Back with an update. Not good.

Spent all of last weekend scrubbing & scrubbing with the Builders Clean. Not budged.

Contacted Lithion, they advised to use a stronger concentration. I ended up using it almost neat, scrubbing, leaving, scrubbing, rinsing. Nope. Not budged.

Contacted a cleaning company who quoted £900 to clean it!

Don’t know what to do from here.

 

[Dumbo]

Back with an update. Not good.

Spent all of last weekend scrubbing & scrubbing with the Builders Clean. Not budged.

Contacted Lithion, they advised to use a stronger concentration. I ended up using it almost neat, scrubbing, leaving, scrubbing, rinsing. Nope. Not budged.

Contacted a cleaning company who quoted £900 to clean it!

Don’t know what to do from here.

What cleaning company did you contact . Are they a specialist stone cleaning company . Other wise I wouldn't bother .

 

[1sandyh]

Yes recommended by the stone company. But I wasn’t expecting £900!

 

[On one]

Back with an update. Not good.

Spent all of last weekend scrubbing & scrubbing with the Builders Clean. Not budged.

Contacted Lithion, they advised to use a stronger concentration. I ended up using it almost neat, scrubbing, leaving, scrubbing, rinsing. Nope. Not budged.

Contacted a cleaning company who quoted £900 to clean it!

Don’t know what to do from here.

Did you only ask Lithofin regarding Builders Clean?
There may be other options with other Lithofin products.

 

[J Sid]

Yes recommended by the stone company. But I wasn’t expecting £900!

cost really doesn't come into it as you will be getting the fixing company to pick up the bill. There other option is to replace the lot and do it right this time

 

[1sandyh]

The landscaper won’t pick up the bill

 

[WetSaw]

The landscaper won’t pick up the bill

Why not? If he pointed it it's his problem.

 

[1sandyh]

I wish it was that easy. He’s disappeared off the face of the earth. Phone off not returned any messages voicemails or emails.

Lithofin said there is nothing else suitable for sandstone, but that builders clean should do the trick.

I guess the problem is the grout used was a resin rapid set not traditional sand & cement.

Really don’t know where to go from here. The professional cleaning company said they would use chemical cleaners to remove it, harsh? He’s quoted 1-2 days for 1 man. There’s no way I can afford £900 though

 

[Dumbo]

Did you tell lithofin it was a resin grout do you know the exact grout . Make and name .

 

[1sandyh]

Yeah I sent the guy photos emailed back & forth etc. He said the only product safe for stone is builders clean. He advised me how to use it etc. I used 4L bottles the weekend just on a smallish area it hasn’t touched the bloody stuff.

Grout was Instarmac ultrascape flowpoint in mushroom colour, (orange bag) I’ve contacted them too they advised me to contact a cleaning company!

 

[Dumbo]

I'm going to phone instamarc today and see if I can shed any light on this . It may not be a good answer though . But I wont accept contact a cleaning company .

 

[1sandyh]

Thank you JCR! The woman I spoke with was J (not sure if I’m allowed to say full name on here?)

 

[Dumbo]

Right I have just had a reply from grout manufacturer's after talking to technical and their reply is this .
(The stains are left by incomplete rinsing of the surface and when the water evaporates it leaves the calcium salts.

Brick acid may be too strong for Indian sandstone. There are other acid based products that can be used. Lithofin Builders clean (acid based) need to seek advice from the stockists. Start of by diluting it 10/1 and incrementally increase the dosage if required,this should shift the stains. If you are unsure do a small test patch first in an indiscrete area.)
Sorry no silver bullets .

 

[1sandyh]

Cheers JCR. Same advice I had from Lithion. It didn’t work so was advised try 3-1 or 4-1. Used 4-1 left on for 20 mins, scrubbed and scrubbed like I’ve never scrubbed before! Rinsed. Next day looked at them dry. Nothing had changed. So went even stronger almost used it meat, left m, scrubbed constantly, rinsed. You guessed it didn’t budge. I used 4 L bottles on area of approx 20m2. Thanks for your help I’m literally at my wits end with this

 

[Dumbo]

@Lithofin BOB I'm certainly no expert but is it worth the householder spreading builders clean and then sheeting down with plastic sheet to allow it to work for longer .

 

[Spare Tool]

Ive just text a link to thread to Lithuanian Bob as he hasn't been on for a while...

 

[1sandyh]

Thanks so much for helping out. Apologies for my terrible spelling in the last post. Should have said I used it almost NEAT, scrubbed, left for 20mins then scrubbed more. Really hoping someone can help me find a solution to this. Looking forward to Bobs opinion

 

[Waluigi]

Try the paving expert forum. Not knocking anyone’s advise on here by any means, just saying that this sort of thing is very common on there.

 

[1sandyh]

I’ll post there too then. Hoping Bob appears soon

 

[Zane Sio]

Interesting, any update? thanks

 

[Lou]

Don't mind me while I bump up some older but good threads. If you can contribute to the thread, go ahead. But if it's nothing for you then don't reply and it'll soon drop off the What's New page etc.
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