Always follow instructions on the product labels, technical information and videos.
Always test products on a small area first.
Call us on 1-800-864-5625 if you have any queries.
Your Unilock Sandstone will be much easier to maintain if you have correctly sealed it. For further information about sealing click here or see the article, below.
If you have specific cleaning issues with your Unilock Sandstone such as oil stains, leaf stains, or rust marks please click here or see the article, below.
Algae prevention. By far the most advantageous thing to do is to ensure you prevent algae and lichen from growing on your stone. This is very easy and inexpensive to do by using Algerase. Full instructions are on the product page.
General dirt. You can use PowerClean, diluted about 1:15 with water, to remove general soiling and dirt. Full instructions are on the product page.
Food and Drink Marks following a BBQ, party or dining outside. Use PowerClean, diluted about 1:20. Full instructions are on the product page.
Leaf and plant stains. Use BioClean. Full instructions are on the product page.
For algae or black spot lichen please see our article by clicking here or see the article, below.
Be careful..! We suggest you read our article on pressure washing by clicking here or see the article, below.
Removing cement, efflorescence, mud, algae, leaf and plant stains, bird droppings, BBQ grease, food stains, drink stains etcSealing Unilock Stone Cliff Grey sandstone
Products and procedures to seal Unilock Stone Cliff Grey sandstoneHow To Remove Algae and Black Spot Lichen From Stone
How to remove algae and black spot lichen from stoneGuidance For Using A Pressure Washer On External Stone and Patios
Guidance for using a pressure washer on external stone and patios
Send us a picture of the problem and we will give you the benefit of 25 years of experience