Protective Coatings Water-based T-Wash is an etching wash for non weathered, untreated galvanised surfaces.
It creates a chemical reaction and causes the surface to turn black, which confirms that the surface has been satisfactorily degreased and is ready for priming.
For further information follow this link: https://www.crowntrade.co.uk/product/exterior-products/crown-trade-protective-coatings-t-wash/
- Etching wash
- Reaction causes surface to blacken
- Confirms surface has been degreased and etched