Dow Corning® 790 Silicone Building Sealant


Dow Corning® 790 Silicone Building Sealant is a ultra-low modulus, one-part neutral-cure silicone sealant and offers outstanding unprimed adhesion to masonry.

It is particularly effective for use for sealing in

  • Expansion and control joints
  • Precast concrete panel joints
  • Exterior Insulation and Finish Systems (EIFS) joints
  • Curtainwall joints
  • Mullion joints
  • Stone pavers
  • and many other construction joints.

Features and Benefits

  • Excellent performance even in building joints that experience extreme movement
  • Suitable for new and remedial construction
  • Extension/compression capability of +100/-50 percent
  • Excellent weathering properties and resistance to sunlight, rain, snow, and temperature extremes

This sealant meets or exceeds the requirements of:

  • ASTM Specification C 920, Type S, Grade NS, Class 100/50, Use T, NT, M, G, A, and O
  • Many UL wall/floor fire designs, some without a protective cover plate
  • Fire Tests of Building Construction and Materials, UL 263 (ASTM E 119)

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