Excellent Surface Solutions
01 Dec 2021
Long Read
DOWSIL™ 789-P Silicone Hybrid Sealant is a mono- component hybrid sealant suitable for sealing joints in porous substrates. It is tailor-made to provide a weather sealing solution, when there is over-paintability, low dirt pick-up and low staining is required. It is easy-to-use and has excellent extrudability and toolability, and can be used for quick and aesthetic joint seal applications.
DOWSIL™ 789-P Sealant is also used as neutral curing sealant particularly suitable for exterior applications such as pre-cast panel joints, expansion joints and weather seals for concrete, masonry, bricks, stone or wood façades. It conforms to EN 15651-1, 2&3. It does not contain any solvents and any free isocyanate compounds. It can be painted over after 3-7 days.
Major application areas:
DOWSIL™ 789-P Silicone Hybrid Sealant are neutral curing sealant, particularly suitable for exterior applications such as: Panel joints, Expansion joints, Weather seals for concrete, masonry, bricks, stone or wood façades.
Key features and benefits:
DOWSIL™ 789-P Silicone Hybrid Sealant, doesn’t contain any solvents, it doesn’t contain free isocyanate compounds. It offers good unprimed adhesion to most porous substrates. It also has properties like neutral cure — can be painted over after three to seven days. Has low staining, low dirt pick-up; it has excellent paintability with water-based and synthetic paints and is suitable for building, sanitary and glazing joint sealing and interior and exterior surfaces.
Technical performance parameters
- Non corrosive towards metals
- No shrinkage and bubble free
- Good resistant to UV, weather and water
- Excellent tooling properties
- Adheres perfectly without primer on most common building materials
- Excellent toolability even at low temperature
- Conform to EN 15651 –25 HM
- Develops quickly a tack-free surface in less than 90min
- Generally good adhesion of facade paints on the sealant
(Communication by the management of the company)