Mapei - Malech is used as a primer for wall surfaces in general (e.g. concrete or repairs with cement mortars) before applying a coloured finishing coat from the Elastocolor, Quarzolite and Colorite range, used as regulator of substrate absorption and as adhesion promoter.

Recommended Use

• As a primer on well cured new or old renders as long as they are not damaged, before applying a coloured finishing coat of Elastocolor, Quarzolite or Colorite range product.
• As a primer over old paint, even if slightly chalky, before applying Elastocolor, Quarzolite or Colorite coloured finishing coat.
• As a primer on surfaces that need to be treated in close or poorly ventilated environments because Malech is odourless, before applying a product from Elastocolor, Quarzolite or Colorite ranges.

Characteristics

Malech is a micronized acrylic resin based primer in water dispersion that, once applied on the surface, penetrates better than traditional water based primers. Malech is odourless and solvent free, therefore can be applied in close or poorly ventilated environments.

Thanks to Malech’s formulation, it ensures the consolidation of chalk present on surfaces that need to be treated. Thanks to Malech’s deep penetration into the surface, it slows down the formation of efflorescence.

Application Procedure

Preparation of the substrate

New surfaces that need to be treated or small repairs with repair mortars must be cured, perfectly clean, sound and dry. Remove from the surface all traces of oil or grease and any loose material that is not perfectly bonded. Seal any cracks and repair deteriorated surfaces. Seal any porous sections and level any uneven parts of the substrate.

Preparation of the product

Interior application:

Dilute Malech with water at a variable rate depending on the type of substrate. As a general rule, it is suggested a dilution Malech/water in a ratio of 1/1 for more absorbent substrates and 1/2 for less absorbent substrates, in order to avoid the forming of a glassy film on the wall surface.

Exterior application:

Malech is used as it is in case of porous and very absorbent substrates. In case of other types of substrate, dilute Malech with up to 50% of water
according to the absorbency, in order to avoid the forming of a glassy film on the wall surface.

Application of the product

Mix Malech before use and apply it with a brush, roller or spray.

Protect from pouring rain for at least 12 hours. Malech can be painted after 12-24 hours depending on the environmental conditions.