For cleaning, maintaining, stain removal and re-sealing your material I recommend Italian manufacturers of stone consumables Akemi.
The Akemi range of products:
- Stone Cleaner – Slightly alkaline cleaning agent used for thoroughly removing building dirt. Removes coats of stone polish and wax, slight concrete films, oil and grease, soot and tar, the remains of synthetic paints as well as plaster on all natural and artificial stone such as Marble, Travertine, Terrazzo, Granite, Slate, Brick and Cotto slabs, tiles, fair faced concrete and fine stoneware.
- Stone Sealer – Satin finish – Sealer which contains solvents and high-grade acrylic resins. It is weather-resistant and non- yellowing. The colourless acrylic coating provides long-term protection and is water and dirt-resistant. It is used to seal porous and absorbent surfaces. Colours and structures appear more pronounced. On account of the sealed surface, the stone is easier to care for. Preferably used indoors. Also available in matt finish.
- Stain Repellent Nano Effect – Outstanding impregnation on the basis of high-quality, organic substances, food safe (tested by LGA Nuremberg). Beginning of protective effect (20°C): 10 – 20 min. Even stronger water-, grease and oil-repellent effect as Stain Repellent (see above) which already begins after some minutes and is fully effective after 2 – 3 hours. As a rule the colour of the stone remains unchanged. Special substances work against a laminar wetting through liquid drops. Ball-shaped liquid pearls which lie only selectively on top of the stone surface, run off the surface.
- Stone Impregnation – Penetrates deep into the stone, makes it water-repellent without impairing the vapour permeability. Protects facades from driving rain, causes water to pearl off and is dirt-repellent.
For more information – http://www.akemina.com