A solvent-based sealer that forms a protective layer on paving and deepens its colour. The manufacturer states 5-10 m² per litre for a single application, and no foot traffic for the first 24 hours.
Surface
Block paving
The surface the manufacturer intends this preparation for.
SK-2 is the only solvent-based paving sealer in this range and the only one for which the manufacturer publishes a coverage figure: 5-10 m² per litre for a single application.
It forms a protective layer on the surface and deepens the colour. The manufacturer also gives two things the other data sheets in this range do not: 28 days of seasoning for paving and concrete from the date of manufacture before sealing, and no foot traffic for 24 hours after the work.
Drying 2-3 hours depending on temperature and humidity; working temperature 5-30 °C. Flash point approx. 51 °C - the product is flammable, which rules out working near a naked flame.
The usual reason a sealing job fails is not the product but the substrate. A sealer will not bond to a surface with grease, lime efflorescence or an old coating on it.
New paving has to season first. Manufacturers state that period on the data sheet - usually around 28 days from the date the block was made. The figure for each product 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.
That depends on the finish given in the technical data. An invisible product leaves the colour alone, a wet-look version deepens it permanently, and a colour sealer gives it a new shade. Each product's finish is listed under "Technical data".
By how the water behaves. While it still beads on the surface, the treatment is working. Once water starts soaking in and dark patches return after rain, the protection has worn out. We do not quote a number of years, because it depends on traffic, sun and whether the drive is salted in winter.
No. Water occupies the pores the product is meant to enter, and stays trapped under the film. The result is often a milky bloom that cannot be removed without stripping the coat. The exceptions - products that allow slight surface dampness - say so in their technical data.
Use the calculator under the product description: it takes the manufacturer's coverage figure, the number of coats and the absorbency of the substrate, and turns them into pack sizes. On older, thirstier paving, work to the lower end of the coverage range.
Penetrating products form no film on the surface and do not change its grip. Where a manufacturer says something about slipperiness, we quote it in the technical data. If the surface is already slippery, the right product is an anti-slip treatment, not a sealer.
Both give a wet look. HK-2 is water-based, solvent-free and applied to saturation. SK-2 is solvent-based, has a stated coverage of 5-10 m²/l and requires the surface to be kept out of use for a day.
No - that condition is about newly manufactured paving and concrete units. Paving laid years ago is seasoned; what matters then is only whether it is clean and dry.
The manufacturer gives a flash point of approx. 51 °C. Work away from sources of ignition and ventilate - this is a solvent-based product.
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.
Coverage for a single application, depending on how absorbent the paving or concrete is.
Example for 45 m²
6L
Enter your own area to calculate for your job.
An impregnation will not bond to a surface with anything left on it. This is the most common cause of complaints.
Go directly to the right category. We do not imply compatibility across materials.