Dry-Treat’s STAIN-PROOF™, an Australian product, has been used to seal the terrazzo of Anden station, one of Barcelona’s busiest metro stations. It was the only sealer able to comply with Barcelona’s Metro Council stringent quality and safety specification as STAIN-PROOF™ does not alter the slip resistance of the sealed surface.

STAIN-PROOF™ contains specially engineered molecules that penetrate deeply and form permanent chemical bonds inside the material. Therefore, as STAIN-PROOF™ works from inside the material, it is able to maintain, and not alter, the slip resistance.  Independent testing by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) has also shown that STAIN-PROOF™ has a negligible effect on the slip resistance of a surface.

STAIN-PROOF™ was also used to minimize the effects of graffiti, humidity and salt efflorescence on the train station, as well as strong alkaline liquids that are used for commercial cleaning. STAIN-PROOF™ lasts longer than other impregnators and the terrazzo can be routinely maintained without the use of special equipment or chemicals.