A wet look without a slippery surface: this sealer visibly deepens the colour of block paving and strongly lowers its water uptake without closing the pores. Water-based, made with siloxanes and modified silanes; on absorbent paving apply it two or three times wet-on-wet.
Block pavingHK-2 is the wet-look version: it deepens the colour of the concrete and holds it there, instead of letting it return to grey once the rain has dried.
The product does not increase slipperiness, so it is an excellent choice for drives and steps too. It is water-based, solvent-free and alkali resistant.
Application follows one rule: if the product soaks in within 5-10 minutes, apply again wet-on-wet without letting the first coat dry. On absorbent paving that usually means two or three passes.
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 - usually around 28 days from the date the block was made. You will find the exact time for each product in its 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.
Only if you want it to. An invisible product leaves the colour alone, a wet-look sealer deepens it permanently, and a colour sealer gives it a new shade.
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.
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 are the few products that tolerate slight surface dampness.
Not if you choose a penetrating product - it forms no film on the surface and does not change its grip. If the surface is already slippery, choose an anti-slip treatment rather than a sealer.
Composition and finish. The -1 versions are single-component, based on siloxanes alone, and dry colourless. The -2 versions are multi-component - siloxanes with modified silanes - and give a lasting wet-look finish. Both meet PN-EN 1504-2 tab. 3 and both leave the pores open.
Consumption depends on the absorbency of the material, because the product is applied to saturation - so the surest way to work it out is to seal one square metre, see how much product it took, and multiply by your area, adding a margin.
After 5-6 hours. Until then, protect the freshly sealed surface from rain and from direct sun.
The next coat goes on before the previous one has dried - the product then joins into a single film instead of forming two separate ones. If the first dries, part of the second stays on the surface and gives an uneven sheen.
No. Sealing a heavily salt-laden surface can intensify salt crystallisation and damage the material. Remove the efflorescence first with an efflorescence remover, then seal.
If the sealer has soaked in after 5-10 minutes, apply again wet-on-wet - usually two or three times.
Write to us with the area and the type of surface - we will help you work out how much you need.
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A sealer will not bond to a dirty surface. Start by cleaning it thoroughly.
