Pure acetic silicone sealant, highly elastic and resistant to mould. Available in all the colours in the Mapei grouts collection.

Pure, mould-resistant, acetic silicone sealant with BioBlock® technology for movements up to 25%.


  • High elasticity
  • Mould-resistant (BioBlock® technology)
  • Solvent-free
  • Strong and durable
  • Maximum guarantee
  • Perfect adhesion
  • Smooth and elastic
  • High thermal and chemical resistance
  • Excellent durability
  • Wide range of colours

Application examples:

  • Sealing joints in wall and floor coverings of ceramic and cement, provided they are not subject to heavy abrasion.

  • Sealing joints between sinks or sanitary ware and ceramic tiles in kitchens, bathrooms and showers with colours coordinated with the Mapei coloured grout ranges.

  • Sealing expansion joints in swimming pools.

  • Assembling compositions of glass tiles and artistic stained glass windows.

  • Sealing glazing, door, and window frames portholes, windows, and glass.

  • Sealing air ducts, and water pipes.

  • Sealing tanks, service pipes, and boilers.

  • Sealing of joints subject to high chemical and thermal stress.

  • Sealing materials of different thermal exposure coefficients.

Packaging: Mapesil AC: 310 ml cartridges. Primer FD: 0.9 kg and 0.2 kg bottles.

Related documentation

Technical data sheet
Safety Data Sheet
CE Declaration of Performance
National Declaration of Performance

Color Palette

100 White
187 Linen
176 Green Grey
174 Tornado

Last Projects MAPESIL AC

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