An anti-slip treatment for granite and gneiss tiles. 5-8 m² per litre; the manufacturer states the effect lasts 6 to 24 months. Applied at +10 to +25 °C, out of direct sun.
Surface
Natural stone
The surface the manufacturer intends this preparation for.
R-9G is the anti-slip treatment made for granite and gneiss tiles - stone that is harder and less receptive than ceramics, hence the different pH (3.5) and the higher coverage: 5-8 m² per litre.
The manufacturer states that the anti-slip effect lasts 6 to 24 months - as with the ceramic version, this is a periodic treatment.
The working conditions are narrower here: +10 to +25 °C, with the surface protected from direct sun and rain during application.
Stone forgives less than concrete. An acidic cleaner used on marble or travertine will etch the surface irreversibly, and excess sealer on a polish leaves a smear that can no longer be removed.
After sealing polished stone, manufacturers require the surface to stay out of use, usually for 72 hours. The exact figure is under "Technical data".
Before sealing the whole area, test on a patch hidden by a planter or in a corner of the patio. The same product can read differently on two batches of the same material, and on a surface with old coating left on it, it will not bond at all.
Chemistry and finish. The -1 versions are single-component, siloxane-based and dry colourless. The -2 versions also contain modified silanes and deepen the colour for a wet-stone effect. Protection against water is the job of the product in both cases; what separates them is the finish.
Do not assume so. Marble is soft and sensitive to acids, granite is not - the manufacturer states the stone in the product's intended use, and our categories follow that. Every product lists its recommended substrates in the technical data.
Manufacturers of the polished-stone range state a permitted pH range for cleaning products - usually pH 5-9 for the invisible versions and wider for the wet-look ones. The figure for each product is under "Technical data".
It limits the ingress of water and the compounds dissolved in it, including those that discolour stone from below. It will not stop processes inside the stone itself, or rust from fixings.
The manufacturer states granite and gneiss tiles without distinguishing the surface finish. On a polish, any treatment that changes grip is worth checking with a test - a polish is the most sensitive of all to a change in appearance.
They are two different mechanisms. R-9G is acidic at pH 3.5 and works for a period of 6-24 months. Guard Slip Resistant reacts with the silica in the material and its maker describes the effect as long-lasting without giving a period. On stone sensitive to acids, the latter is the right one.
The technical sheet and safety data sheet will be available after approval.
Enter the area and how absorbent the substrate is. We work out the litres and the packs.
Example for 45 m²
6.9L
Enter your own area to calculate for your job.
Go directly to the right category. We do not imply compatibility across materials.