Protective agent

Alkali resistant, ready for use colourless protective agent containing silicone, for porous rock material surfaces. Repels water and prevents penetration of moisture into the structure, but allows water vapour to evaporate from the concrete.

Roof tiles, stone pavings, concrete socles and other porous mineral surfaces. Not recommended for dense substrates, such as natural stone and marble.

Surface preparation

Clean the surface that is to be treated. Wash stone surface with RENSA ROOF roof wash.


Apply undiluted with low pressure or airless spray 2–3 times „wet on wet“. Protect from splashes surfaces, which are not meant to be treated with TEKNOSTONE.

Application conditions

The surface must be clean and dry. The temperature shall be above +5°C and the relative air humidity below 80%.


Must not freeze.
Volatile organic compound (VOC) EU VOC limit value (kat A/h): 30 g/l. The product's VOC: max. 30 g/l.
Density abt. 1 g/ml
Drying time - overcoatable Earliest the following day.
Clean up Water.
Packages 5 L, 10 L, 20 L
Safety markings See safety data sheet.
Approvals & certificates Finnish Key Flag