RENSA STEEL 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 primarily meant for washing new untreated zinc-coated and galvanized steel surfaces before painting with KIRJO or KIRJO AQUA paint for sheet-iron roofs. It removes very efficiently zinc salts, grease, dirt and other impurities.

RENSA STEEL is also suitable for washing of previously painted sheet-iron roofs before maintenance painting.

RENSA STEEL is environmentally friendly and biodegradable.

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).

Tehnilised andmed


abt. 2 - 3


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

Spreading rate

abt. 40 m² / 1 l undiluted detergent.

Absorption of the surface, dirtiness, air humidity etc. factors affect considerably on the spreading rate.

Packages (availability varies by country)

1 L, 5 L


See Safety Data Sheet.


Dilute RENSA STEEL with water depending on the purpose of its use:

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

Remove loose dirt and dust from the roof by brushing.

Wet the tile surface with water before applying the detergent. This prevents the detergent from absorbing too much and drying too fast.

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.


RENSA STEEL is an efficient, but environmentally friendly and biodegradable product.

However, 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.



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