Stains on Sandstone Paving

The marshalls antique range is a tumbled natural stone. When stone is tumbled, the tumbling process generally makes the stone more resistant to dirt and staining. Having said that, in my experience stones that are more resistant to dirt are much harder to clean once they have become stained, which is the situation that you are in.

I would also call lithofin yourself and get some advice on removing the stains, we have always found them very helpful and knowledgeable. I would not recommend sealing the stone, Kota stone is very hardwearing and more than capable of standing up to our British climate. If you do opt to seal, then I dont think that lithofin is the best product out there. We use a product called dry treat which comes with a 15 year guarantee, its about 30% more expensive than lithofin but does not need re-applying annualy (the guarantee is subject to the sealant being installed by a dry treat accredited installer and the best thing is Dry treat will come to the job and train you up to be an accredited installer, free of charge)

Replies

PRO

Phil Voice December 2, 2012 at 6:43pm

Hi Bradley

Follow this link to see previous discussions on removing stains from sandstone
Mr Bradley Goodman December 2, 2012 at 7:39pm

Thanks Phil, do you think Bleach will work because I am sure Oxalic Acid is found in common Bleach?
Thermo December 2, 2012 at 8:22pm

has it eneterd the paving or is it only marking the surface?
Mr Bradley Goodman December 3, 2012 at 7:16am

It looks like it has entered the paving
PRO

Stephen Budgett December 3, 2012 at 11:27am

Hi Bradley,

Have a look at:

http://www.pavingexpert.com/stains.htm

for more information on removing stains. I've had great success using the Lithofin range of cleaners - particularly for removing rust stains from grey sandstone paving. Not sure if they have a cleaner for resin stains but have a look at : http://www.vistatiling.co.uk/lithofin-cleaners

If you succeed in removing the stains, then the best bet would be to use a sealant to protect the area - again, Lithofin sealant would be a good choice. You'd have to re-apply the sealant every year or after each time the paving is jet-washed.

Steve
Steve London Stone December 3, 2012 at 1:24pm

The marshalls antique range is a tumbled natural stone. When stone is tumbled, the tumbling process generally makes the stone more resistant to dirt and staining. Having said that, in my experience stones that are more resistant to dirt are much harder to clean once they have become stained, which is the situation that you are in.

I would also call lithofin yourself and get some advice on removing the stains, we have always found them very helpful and knowledgeable. I would not recommend sealing the stone, Kota stone is very hardwearing and more than capable of standing up to our British climate. If you do opt to seal, then I dont think that lithofin is the best product out there. We use a product called dry treat which comes with a 15 year guarantee, its about 30% more expensive than lithofin but does not need re-applying annualy (the guarantee is subject to the sealant being installed by a dry treat accredited installer and the best thing is Dry treat will come to the job and train you up to be an accredited installer, free of charge)
Gareth Wilson December 3, 2012 at 4:02pm

If it was me I'd be letting the contractor who let the resin leach onto the patio do the running about and ask him to sort it at his own cost and time. Other that that you could try sandblasting it off I've done this with paint stains in the past. Also Resiblok patio sealant will protect against stains in the future.
Dave Sewell December 3, 2012 at 5:21pm

This might be of help from kerrys website...

http://www.jacksonslandscapedesign.com/2012/07/tannin-stain-removal...
Thermo December 6, 2012 at 8:35pm

depends how far its penetrated, but the old fashioned method of a small piece of sandstone, some water and a little bit of sharp sand, work wonders in rubbing off marks and stains. Works quite quickly as well