RENSA ROOF Roof wash


RENSA ROOF is an efficient detergent for washing of tile roofs and previously painted very dirty sheet-iron roofs.

RENSA ROOF is a pretreatment agent for maintenance painting. It is primarily meant for washing old tile roofs before painting with KIRJO TILE paint for tile roofs. It removes very efficiently both dirt and algae, moss and lichen growth.

RENSA ROOF is also suitable for washing of painted very dirty sheet-iron roofs before maintenance painting.

RENSA ROOF 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 of all used raw material (OECD 301B, EC 648 / 2004).

Tehnilised andmed


abt. 10


For washing of and pre-treating surface to be painted: 1 : 6 (1 litre of detergent to 6 litres of water)

For very dirty surfaces: 1 : 3

Spreading rate

abt. 35 m² / 1 l undiluted detergent.

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

Ingredients of RENSA ROOF detergent

INCI name


Benzalkonium chloride

Trisodium dicarboxymethyl alaninate

2-propylheptanol ethoxylate






If needed, please contact for the full ingredient data sheet.

Packages (availability varies by country)

1 L, 5 L


See Safety Data Sheet.


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

For washing of and pre-treating surface to be painted: 1 : 6 (1 litre of detergent to 6 litres of water)

For very dirty surfaces: 1 : 3

Remove loose dirt, moss and growth from the roof by brushing and/or using a pressure washer.

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. 20 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 by using a pressure washer.


RENSA ROOF 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 Material 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.

The detergent may matten or lighten surfaces – avoid unnecessary splashing.



Tootekirjeldustes esitatud andmed põhinevad laboratoorsetel katsetel ja toodete praktilisel kasutamisel. Kõik esitatud väärtused on suunavad ning olenevad muu hulgas toonist ja läikeastmest. Kuna me ei saa mõjutada värvi kasutus- või tööolusid, vastutame ainult värvi kvaliteedi eest ning tagame, et see vastab Teknose kvaliteedikinnitusele. Me ei vasta kahjude eest, mis tulenevad toote kasutamisest kasutusjuhendi või -otstarbe vastaselt. Meie koduleheküljelt leiab ajakohased versioonid tootekirjeldustest, ohutusjuhenditest ja süsteemikirjeldustest.