Sandstone is very popular. It is commonly used in- and outside and outside, as a building material and design medium, as a wall cladding, floor covering, in the garden, for sculptures and also as a headstone. The applications are as diverse as the compositions of the various types of sandstone themselves. Which is why there are a few things to consider when maintaining it.

Sandstone is a sedimentary rock that can be found around the globe in numerous forms and compositions. The potential uses of each specific type of sandstone depend primarily on its so-called granular binding. This refers to how the millions of tiny sediment particles of the stone are bound to each other. Rough-cleaved sandstone, for instance, is valued for its slip-resistant effect for use around swimming pools, other types are used as fireplace surrounds or as a resilient, high-quality material in bathrooms. This diversity also has an influence on the cleaning and maintenance of the natural stone.

The MELLERUD product range holds the right solution for every application. MELLERUD's experts also have one or two practical tips for successful cleaning and for protecting your sandstone.

As a general rule: 
apply, test and assess each cleaner first on a small, inconspicuous area. This often gives very accurate information on the quantity, application time and results.

MELLERUD Sandstone Tips

Sandstone Outdoors

Siliceous (quartz-bound) sandstone is primarily used outdoors. This is more coarse-grained, fairly robust and tolerant to frost and acid. Nevertheless there are one or two things to consider:

Tip 1

As sandstone is relatively soft, particularly at the surface, we advise against the frequent use of pressure washers. It enlarges pores, making it easier for dirt to take hold and algae to settle.

Tip 2

About twice a year stones used outdoors should be treated with Algae and Green Growth Remover. This prevents blackening as a result of fungi and other micro-organisms.

Suitable products from the MELLERUD range for sandstone used outdoors:

 

For Cleaning

Tile & Stone Heavy-Duty Cleaner

Ideal for post-construction cleaning and against residues of grouting compounds or limescale. Also very well suited to an intensive clean.

Heavy-Duty Intensive Cleaner

Perfect for post-construction cleaning and for general heavy-duty cleaning – especially against greasy contamination and environmental pollution.

Algae & Green Growth Remover

Gets rid of organic impurities such as green growth, plant remains or mould.

for Protection
Concrete, Plaster & Paving Impregnator

Concrete, Plaster & Paving Impregnator

Oil, water and dirt resistant, particularly suited to level surfaces such as patio slabs.

Colour Enhancer for Stone Surfaces

Colour Enhancer for Stone Surfaces

Revives colour, strengthens structure, reduces susceptibility to dirt.

Stone Sealant

Stone Sealant

Enhances the colour and texture. Repels dirt and gives a silky sheen.

Masonry and Façade Impregnator

Stops damp penetrating and acts against driving rain. Particularly suited to vertical surfaces such as walls and masonry. Also hinders new green growth.

Sandstone indoors

Inside – for instance as a fireplace surround – carbonatic (carbonate-bound) sandstone is generally used. The lime content means that they are usually sensitive to acid and more susceptible to weathering. Our tips:

Tip 1

Fireplace surroundings made of sandstone are easier to clean and treat with the MELLERUD Stone Sealer. This makes it more difficult for soot to settle. MELLERUD Stone Sealer is heat resistant after hardening and suitable for the intended purpose.

Tip 2

Be careful when laying and joining! Not all mortars are suitable for all types of stone. For sandstone you should use a jointing material that is softer than the natural stone. If the mortar is too hard it can cause the edge of the sandstone to crumble. Specialist cement mortars are idea

Suitable products from the MELLERUD range for sandstone used indoors:

For Cleaning

Heavy-Duty Intensive Cleaner

For post-construction cleaning and general heavy-duty cleaning, especially against greasy contamination and traces of use.

For Maintenance Cleaning

Floor Tile Care

Cleans and maintains in one step, preserves the natural appearance.

For protection

Marble & Natural Stone Impregnator

Marble & Natural Stone Impregnator

Durable protection against oily, greasy dirt, no change in its appearance, no shine.

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Colour Enhancer for Stone Surfaces

Emphasises the stone's natural texture and revives its colour, repels water and dirt.

Stone Sealer

Stone Sealer

Colourless and watertight long-term protection, creates a silky-matt, gleaming, colour-enhancing protective layer.