Indian sandstone jointing stain

Question

I’ve recently had my patio jointed with the joint-it compound and there’s some staining left in my grey Indian sandstone slabs any recommendations on how to get rid of this before sealing the patio?

Nick · Accepted Answer

all the customers on your site appear ignorant ? they either make things difficult or do not reply 
1. how many tradesmen do you allow to quote
2. how do i get refunfds  on ignorant customers?

Tristan · Answer

You may want to try using a patio cleaning acid product available from most builders merchants . 
I hope this helps 
Regards Tristan T&A home improvements 👍🏼

Lawrence · Answer

Hi try acid based brick and patio cleaner that should remove any stains

Daniel · Answer

There are cleaning chemicals specially made for this, or any acidic surfactants will do the job, you can clean it with with spirit vinegar, before sealing.

Nadim · Answer

Do not seal your patio just yet, the marks should weather away but may take 4 to 6 months.

Rob · Answer

Depending on how much staining damage is done I woukd recommend brick acid which shoukd erode the stain but as I said it depends on how much staining is done...

Sorin · Answer

you can clean with acid and after washing with water, the stains disappear. I cleaned the sebum with acid and the stains disappeared

Joseb · Answer

Hi, as others mentioned here use acid to clean it. I have used Sika brick and patio acid and worked a treat. Make sure to use full PPE as its a nasty staff.

Tommy · Answer

Sealing is ment to be done before using joint it.

1. Rake out clear everything from joints. 
2. Clean patio remove all staining rust cement etc 
3. Steam clean preferably after removing all staining.
4. Apply joint it compound to joints
5. Rinse down.

This is the correct order to doing it. To avoid issues like you have now got.

You need to soften the residue to allow it to be cleaned now using a chemical. If you would like some more help please feel free to message me.

Ryan · Answer

The best way is to probably lightly jet wash with a standard low power jet wash to avoid washing away any other compound

Indian sandstone jointing stain

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