Mapei Mapecoat I 62 W

Mapei Mapecoat I 62 W is a two-component, coloured and water dispersed epoxy formulation, used to form smooth resinous film coatings with an attractive, shiny finish for treating surfaces of walls and ceilings in cleanrooms.

Best Uses

Mapecoat I 62 W is applied on cementitious substrates or as finish for epoxy systems and forms a seamless coating with an attractive finish both on flooring and walls. Mapecoat I 62 W forms a strong film with a good resistance to abrasion, chemicals, inorganic acids and bases, and it is also dustproof. It withstands light vehicles and pedestrian traffic and avoids the absorption of moderate amounts of liquid on the treated surface.

Mapei Mapecoat I62 W is ideal as a dustproof and oil repellent coating for floors stressed by light vehicles and pedestrian traffic. It is also suitable for coating for floors and ceilings in damp areas such as car-washes, agricultural and industrial warehouses in presence of water, etc. Ideal for coating walls, ceilings and cementitious surfaces in general in clean rooms or as a maintenance layer on old epoxy coatings.

• Easy to apply
• Odourless during application and hardening
• Low emission of volatile organic compounds and micro-particles
• Available in various RAL colours on request
• Good mechanical and chemical resistances
• Dustproof surface; easy to clean and maintain
• Impermeable to oils and liquids in general
• Suitable for application on floors, walls and ceilings

Application

Preparation of the substrate
The surface of concrete floors and cementitious substrates must be dry, clean and sound and have no crumbling or detached portions. The compressive strength of the substrate concrete or mortar must be at least 25 N/mm² and its tensile strength must be at least 1.5 N/mm². The substrate must be suitable for its intended use and the types of loads to which it will be subjected. The water content in the substrate must be a maximum of 4% and there must be no capillary rising damp (check by testing it with a sheet of polythene). The surface of the floor must be prepared with a suitable mechanical process (e.g. grinding or sanding), to remove all traces of dirt, cement laitance and crumbling or detached portions and to make the surface perfectly clean, sound and slightly absorbent. Before applying the product, remove all dust from the surface with a vacuum cleaner.

Any cracks, holes or surface irregularities must be repaired and smoothed with epoxy resin Mapei Primer SN fillerised with quartz sand or made thixotropic with Mapei Additix PE, or epoxy mortar Mapei Mapefloor EP19 or thixotropic epoxy resin Mapei Mapefloor JA or Mapefloor JA Fast. Before applying Mapecoat I 62 W remove all traces of dust from the surface with a vacuum cleaner.

Application of Mapecoat I 600 W primer (optional)
It is not usually necessary to apply a coat of primer. However, on particularly porous and absorbent substrates, or on substrates whose surface needs to be consolidated, we recommend applying a coat of Mapei Mapecoat I 600 W water-based epoxy primer diluted 1:1 by weight with water, with a short-pile roller.

Preparation of the product
Stir the component A and pour it all into the container of component B along with the water required for dilution. The amount of water required for the first coat is 20-25% by weight of the resin for substrates that haven’t been primed with Mapei Mapecoat I 600 W and 10% by weight if a coat of primer has been applied. The second coat should then be diluted with a maximum of 10% on the weight of the resin formulation. Mix together for at least 2 minutes until completely blended with a low-speed electric mixer (300-400 revs. /min.), to avoid entraining air into the mixture. Do not overmix the product to prevent entraining too much air. Pour the mixture into a clean container and briefly mix again. Apply the mixture within the pot life indicated in the table (at +23°C) if the temperature is higher its pot life will be reduced, while with lower temperatures the pot life will be longer.

Application of the product

Apply two or more layers of Mapecoat I 62 W with a short-pile roller or by airless spray. The second coat should be applied between 12 and 24 hours at +23°C from the application of the first coat, depending on the surrounding conditions on site. Apply the product evenly and go over the surface with the roller several times in perpendicular directions. When applying colours with poor hiding power (such as bright colours), a preliminary base coat of white Mapecoat I 62 W will help obtain an even colour in the finished coating. Depending on the colour chosen and the type of substrate on which it is applied, a third coat of coloured resin (apart from the white base coat), may also be required. Always carry out preliminary tests beforehand.