Mapeflex AC-P is used to seal internal and external expansion and construction joints subjected to a medium amount of movement and surface cracks in all types of absorbent building materials.

The “render effect” finish of Mapeflex AC-P, which is obtained by adding special white aggregates in a particular particle size, helps sealed joints blend in with substrates with a rough or coarse textured finish such
as render, concrete and exposed brickwork.

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Some application examples
■ Seals between prefabricated concrete panels with movements up to 12.5% of the width of the joint.
■ Seals between prefabricated concrete, wooden and plasterboard walls.
■ Seals between concrete members, render, brick walls, cellular concrete, wood, natural stone, etc.
■ Air and water-tight seals between wooden window frames and walls.
■ Leak-proof elastic gaskets between doors, roller-blind housings and walls, adjacent walls, ceilings, wooden panels and insulating panels.
■ Fillet seals between construction features (ledges, windows, window sills, stringcourses. etc.) in external thermal “cladding” systems.
■ Sealing accidental surface cracks in internal and external vertical walls.

Technical Characteristics
■ Mapeflex AC-P is a one-component sealant made from acrylic resins in water dispersion. It comes in the form of a thixotropic paste which is easy to apply in joints on both horizontal and vertical surfaces. After smoothing
■ Mapeflex AC-P sealant, its surface has a “render effect” finish that helps it blend in with substrates with a rough or coarse textured finish.
■ Seals made using Mapeflex AC-P remain stable even after years of exposure to all types of weather conditions, industrial surroundings and temperature variations. They remain flexible at temperatures as low as -30°C and are resistant to temperatures up to +80°C (up to +100°C for short periods).
■ It has good resistance to accidental contact with diluted acids and alkalis. However, because of the wide range of products and service conditions that may be encountered, carry out preliminary tests beforehand.
■ It also offers good resistance to water as long as it is not constantly immersed.
■ Mapeflex AC-P complies with EN 15651-1 norm (“Sealants for façade elements”) with performance rating FEXT-INT.

Mapeflex AC-P adheres well to all porous, absorbent surfaces such as concrete, wood, gypsum, render, brickwork, cellular cement, natural stone, etc. It also adheres well if the surface is damp, but not wet, or if there is a film of non-stagnant water. If joints sealed with Mapeflex AC-P are to be subjected to particularly severe service conditions, we recommend priming the walls of the joint (with Mapeflex AC-P diluted with water) just before applying the sealant.


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