Washing agent for galvanized surfaces

RENSA STEEL is a very efficient citric acid based detergent for pretreatment of galvanized sheet-iron and zinc-coated steel surfaces before painting.

RENSA STEEL is a pretreatment agent for maintenance painting. It is meant for washing new untreated zinc-coated and galvanized steel surfaces before painting with paints for sheet-iron roofs. It removes very efficiently zinc salts, grease, dirt and other impurities. RENSA STEEL is a biodegradable product. It meets the requirements by OECD and by the Detergent regulation of European Parliament and the Council on detergents for biodegradability (OECD 301B, EC 648 / 2004).


Remove loose dirt and dust from the roof by brushing. Apply the detergent to the surface to be cleaned by using e.g. a brush or low-pressure spray (so-called garden spray). Let it act for abt. 10 minutes. Enhance the cleaning effect by brushing strongly. NB! The detergent must not dry on the surface to be cleaned - wet the surface again with the washing fluid, if needed. Rinse the surface thoroughly with a plenty of clean water.


Must not freeze.

Special precautions

RENSA STEEL is an efficient product. Therefore, using the detergent must be followed with a reasonable caution. Avoid skin contact and breathing the spray mist. Protect eyes from splashes. More information from product’s Safety Data Sheet. The detergent may harm garden plants – avoid unnecessary splashing. The most sensitive plants can be covered or wetted with water before the treatment.
pH 2
Dilution For washing of and pre-treating surface to be painted: 1 : 3 (1 litre of detergent to 3 litres of water). For very dirty surfaces: 1 : 1
Thinner Water.
Packages 1 l, 5 l.
Safety markings See safety data sheet.
Approvals & certificates OECD 301B, EC 648 / 2004