Deals with damp problems, outbreaks of saltpeter or the brittleness of materials.
Guard Hardener® W is a mineralisation product for new or old brittle porous materials damaged by water ingress, damp, ice, etc.

Guard Hardener® W penetrates brittle materials in order to crystallise, harden and mineralise. Once treated, the material becomes harder and resistant to harmful external factors. It can also be used as an anti-dust treatment. Guard Hardener® W possesses excellent water-repellent properties which enable the adverse effects of damp to be limited: ingress, acid rain, erosion, ice/de-icing cycle, formation of moss and lichens, efflorescence, saltpeter formation, etc.

Guard Hardener® W is a non-film forming impregnation product, the material remains permeable to air and water vapour. Completely colourless after application, it does not change the appearance or the nature of the treated material. It is also fully resistant to UV rays and does not yellow over time.