MAPESIL AC – Premium Mould-Resistant Silicone Sealant with High Elasticity
MAPESIL AC is a pure acetic silicone sealant formulated for superior flexibility, durability, and long-term performance. Engineered with BioBlock® technology, it provides advanced mould resistance, making it ideal for both interior and exterior applications where hygiene and lasting adhesion are essential. Designed to accommodate movement up to 25%, MAPESIL AC remains smooth, strong, and elastic under a wide range of conditions.
Perfect for sealing joints in bathrooms, kitchens, pools, and even industrial applications, this sealant offers perfect adhesion to ceramic, glass, and a variety of materials—without the use of solvents. Its high thermal and chemical resistance ensures longevity even in the most demanding environments.

Key Features:
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BioBlock® Technology: Prevents mould growth in wet and humid areas
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Highly Elastic: Absorbs movement up to 25% without cracking
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Solvent-Free: Safe, low-odor formulation
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Exceptional Durability: Long-lasting performance in various conditions
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Perfect Adhesion: Bonds effectively to a wide range of materials
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Thermal & Chemical Resistance: Maintains strength under extreme conditions
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Smooth Finish: Easy to apply and clean
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Wide Colour Range: Matches all Mapei grout colours
Common Applications:
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Joints in ceramic and cement wall/floor coverings
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Sealing between sanitary fixtures and tiles in kitchens, bathrooms, and showers
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Expansion joints in swimming pools
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Glass tile installations and stained glass compositions
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Window, door, and porthole frame sealing
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Air duct and water pipe sealing
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Boilers, tanks, and service pipe sealing
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Joints exposed to high thermal or chemical stress
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Sealing between materials with different thermal expansion properties
Packaging Sizes:
Whether you're working on a home renovation or a commercial-grade installation, MAPESIL AC delivers reliability, hygiene, and lasting results.
Downloads
Data Sheet
Safety Sheet
EPD
GEV