A water-based silane sealer for concrete and precast concrete products. Once dry the film is invisible and changes neither the appearance nor the colour of the material. Dries in 1-2 hours at 20 °C.
Surface
Block paving
The surface the manufacturer intends this preparation for.
EH-17 is a water-based silane sealer aimed at concrete and precast concrete products - edgings, palisades, garden elements, blocks.
What sets it apart is the pace of work: drying in 1-2 hours at 20 °C and protection from rain for a minimum of two hours. With a short weather window that is a real advantage over products needing a full day.
The manufacturer states consumption by volume rather than in square metres per litre: 0.20-0.35 l/m² on concrete and 0.20-0.25 l/m² on precast units. The film is invisible and changes neither the appearance nor the colour of the material.
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 We do not quote a number of years, because it depends on traffic, sun and whether the drive is salted in winter.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.
Multiply the area by the consumption: 40 m² × 0.25 l/m² is 10 litres. Note that this is the inverse of "square metres per litre" - the higher the number, the more product you use.
That is the minimum the manufacturer gives at 20 °C. At lower temperatures and higher humidity drying takes longer - it is better to have margin in the forecast.
The technical sheet and safety data sheet will be available after approval.
This product has no stated coverage yet, so we cannot work out the requirement.
The manufacturer states consumption by volume: concrete 0.20-0.35 l/m², precast concrete 0.20-0.25 l/m².
The calculator starts once the manufacturer states the coverage.
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.