We are often asked this question. There is no absolute, fixed answer but there are two or three Lithofin products that usually work. We do not offer any guarantee of outcome as each issue varies but here is the process we use:
You should try Lithofin Wexa first. Wear suitable gloves. Dilute approximately 1:3 with water and apply to the stain. Keep the surface wet with product and agitate with a sponge or brush (being careful not to scratch the stone). You can use a kitchen scouring pad but, again, don't scratch your stone.
Rinse well after 5 minutes, allow to dry and check results.
If Lithofin Wexa is working but has not quite removed all of the stain it is certainly worth repeating the above process.
If Wexa has not worked you can try Lithofin Oil-Ex. This is a gel that is applied approximately 2mm thick over the stain and left until dry (approximately 6 to 12 hours). Brush away the remaining powder.
Full Manufacturers Instructions are available on the product page on our site.
Remember that Oil Ex will strip any sealers out of your stone. The whole area may require a deep clean with Wexa and then re-sealing.
If the stone was never sealed you can use MN Stain Stop. If it has been previously sealed with an unknown product you should call us first on 0845 226 1488.
Extensive is the UKs most experienced contractor for stone treatment and maintenance.
Click below to see the range of services we offer
Send us a picture of the problem and we will give you the benefit of 25 years of experience