MAPETHERM AR2 – Cementitious Mortar for Bonding & Smoothing Insulation Panels
MAPETHERM AR2 is a single-component, cement-based mortar designed for bonding and smoothing thermal insulating panels and cladding systems. It delivers excellent adhesion, workability, and thixotropic properties, making it ideal for professional insulation installations on vertical and overhead surfaces.
Where to Use
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Bonds all types of thermal-insulating panels (foam/extruded polystyrene, mineral fibres, cork, etc.) on walls or ceilings.
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Smooths insulation panels with embedded fibreglass reinforcing mesh for internal and external applications.
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Suitable for bonding and smoothing systems for:
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Insulating radiator alcoves
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Insulation under roofs
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Loft floor insulation
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Internal insulation for walls above ground
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Basement retaining walls
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Loft ceiling insulation
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External faces of ventilated facades
Technical Characteristics
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Appearance: Grey powder
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Composition: Cement, fine graded sand, synthetic resins, special additives
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Workability: Medium viscosity for easy application
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Thixotropic: Stays in place on vertical surfaces without sagging
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Bonding Strength: Excellent adhesion to masonry materials
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Shrinkage: Hardens without shrinkage
Recommendations
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Not for metallic surfaces or substrates with large movements (wood, cement-fibre).
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Avoid use on smooth-surfaced panels (e.g., kraft paper-coated mineral fibres, skinned extruded polystyrene, high-density pressed foam).
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On poor-quality render or deteriorated substrates, use mechanical anchors for secure fixing.
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