The Patio Black Spot Removal Company Ltd has become famous, over the past fifteen years, for formulating products to cope with garden stonework cleaning issues.

During that period, the Patio Black Spot Removal Company have exhibited at around 130 garden shows, the length and breadth of the UK, including Ireland.

Patio Black Spot Remover and ancillary products have become house names. A trusted Brand, synonymous with the restoration of Garden stonework

At many of the Shows, one question that gardeners kept asking was,” have we a solution to remove rust from garden stonework?”

More specifically, the question invariably was, “how do you remove those orange spots from Garden Stonework?”

The Orange Spots are caused by overspill from lawn fertiliser which contains ferrous sulphate, which kills moss.

When wet, these leave orange rust spots that cannot be removed.

In addition, many gardeners have rust staining caused by fire pits, cast iron pots an planters, BBQ utensils, and so on.

Whether the stone be York stone or Indian Sandstone, Limestone or composite stone, or, more recently, Porcelain, the orange stains, caused by the run off of iron oxide, are both unsightly and virtually impossible to remove.

Until now!

The difficulty in removing rust from stone is that most commercial rust removers contain hydrochloric, phosphoric or other mineral acids. 

This is fine to remove rust from metal, but they must not be used on stone.

Hydrochloric acid will literally dissolve limestone, and stains Yorkstone, and Indian Sandstone, orange as it reactivates the iron in the stone.

The solution was not straight forward.

Our Product development is based on Green Chemistry, a field focused on designing chemical products and processes that minimize hazardous substances and environmental impact across the entire life cycle of a chemical.

It aims to make chemistry more sustainable, by promoting safer alternatives an efficient resource utilisation.

However, after almost four years of Research and Development, we created GO FERROUS.

Go ferrous is made from recycled green- leaf vegetables; those that have gone beyond the stage where they can be sold.

Go Ferrous is therefore fully sustainable, one of the reasons it got to be one of ten Finalists at RHS Chelsea in 2023, selected by a panel of three judges, headed by Deborah Meaden.

Garden stonework is expensive; small stains can ruin your investment.

Rust staining on garden stonework, is caused by metal oxidising (Rusting) and running off onto garden stonework.

This can be caused by old garden pots, overspill from lawn fertiliser, which contains ferrous sulphate, or, currently Corten steel panels, the new fashionable garden panel.

Go Ferrous is applied to the surface of the stonework, ensuring that the product is ‘puddling’ on the surface over the stain.

When GO FERROUS is in contact with rust staining, a chemical reaction known as a double -displacement reaction occurs. This changes the rust (a.k.a. iron oxide) into iron oxalate. Since iron oxalate is a water-soluble salt, it dissolves in water and easily rinses away, using hot water of a light pressure wash.

Over a period of between 30 minutes and two hours, the product changes the oxide back into a salt, dissolving the stain and allowing it to be removed with hot water, or a light pressure wash.

Go Ferrous is both is both biodegradable and harmless to surrounding plants, whereas acid-based products will change the soil pH, which has an adverse effect on surrounding plants. 

There are only two other similar products, both of which contain sodium mercaptoacitate and benzisothiazolinone and are acutely toxic, and  directly harmful to the environment.

Go Ferrous has the advantage of being able to be used from 3 Degrees Celsius, with no upper temperature limit. 

NB It should not be applied in full sun or when the surface of the stone is hot, as, once dried out, it will cease to work.

The ultimate aim of all the Products that we produce, is to allow old garden stonework to be completely restored, meaning that it will not only save the public money, but, equally important, it will reduce the need to through away garden stonework, at the same time, reducing the use of landfill sites as a dumping ground for old stonework ,  

This saves the public money and helps save the environment.

More Restoration, Less perspiration. 

Go Ferrous is sold through Garden centres all over the Country or delivered through well know networks such as Parcel Force or DPD

Can be used on any stone surface, without damaging or altering the appearance.

Allows existing stone to be restored without damage to surrounding plants.

GO FERROUS – A MUST for RUST!