Mapei Antipluviol W is a milky, silane and siloxane-based dispersing agent in watery emulsion, characterised by its high capacity to penetrate all absorbent mineral materials used in the building industry to make them water repellent.

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• Features & Benefits
• Recommendations & Limitations
• Application & Preparation

Features & Benefits

• When applied on a porous substrate, Antipluviol W penetrates deep down and reacts with the natural humidity present in the said substrate to form a hydrophobic, water-repellent layer inside the pores and capillaries
• Forms an efficient barrier against aggressive agents present in the atmosphere, which are carried into the material by rainwater. The water-repellent treatment formed by Antipluviol W also improves the self-cleaning effect of the façade and reduces the capacity of moss and mildew from adhering to the material
• Does not form a film on the surface. Therefore, the material’s permeability to water vapour is not modified and the appearance of the surface remains practically unaltered
• Has excellent resistance to alkalinity and UV rays and maintains its water-repellent properties over a long period of time

Recommendations & Limitations

• Antipluviol W is not suitable for impregnating the following:
• Horizontal surfaces (terraces)
• Basements
• Water tanks
• Walls subject to rising damp carrying salts
• Lift wells and areas subject to water under pressure
• Gypsum surfaces
• Synthetic plasters and surfaces decorated with synthetic paint
• Carry out a preliminary test to ensure no colour changes take place on the substrate when Antipluviol W is to be used on natural stones, coloured renders or on other types of substrates which show no uniform absorbency
• Do not apply Antipluviol W on damp substrates or on substrates that are not well cured
• Do not apply Antipluviol W if the temperature is lower than 5°C or higher than 35°C (the surface must be dry in all cases and must never be exposed to direct sunlight)
• Do not apply Antipluviol W if the level of humidity is higher than 85%
• Do not apply Antipluviol W if it is about to rain or in windy weather
• Please refer to the “Safety instructions for preparation and application” section in the data sheet

Application & Preparation

Please refer to the data sheets in the tab above for further information.