Sikaflex 1a is a premium-grade, high performance, moisture-cured, one-component, polyurethane-based, non-sag elastomeric sealant.
Ideal for: Weatherproofing of joints between brickwork, blockwork, masonry, wood and concrete or metal frames; joints in walls, floors, balconies, around window or door frames: expansion joints; roofing.
Eliminates time, effort, and equipment for mixing, filling cartridges and cleaning of equipment.
High elasticity - Cures to a tough, durable, flexible consistency with exceptional cut and tear resistance.
Excellent adhesion - Bonds to most construction materials without primer in most cases.
Excellent resistance to aging, weathering.
Proven in tough climates around the world.
Resists fuel, mineral oils, and dilute minerals, plant and animal fats.
Odourless, non-staining, can be painted over with water, oil, and rubber-base paints. Since some paints dry slowly and the surface may remain slightly tacky, a preliminary test is essential.
Meets CAN/CGSB 19.13-M87, Classification MCG-2-25-B-N.
Meets Federal Specification TT-S-00230C, Type II, Class A.
Meets ASTM C 920 Type S, Grade NS, Class 25.
Jet fuel resistant.
NSF approved for potable water contact.
Urethane based, suggested by EPA for radon reduction.
USDA approved. Chemically acceptable to the U. S. Department of Agriculture for use in meat and poultry processing area under federal inspection.
Canadian Food Inspection Agency acceptance.
Ministry of Transport Québec acceptance.
Where to Use
Designed for all types of joints with maximum depth of 13 mm (1/2 in) and a maximum expansion of 35%.
Excellent for small joints and fillets: windows, door frames, reglets, flashing, glazing, and many construction adhesive applications.
Suitable for vertical and horizontal joints; readily placeable at 4°C (39°F).
Many applications as an elastic adhesive between materials with dissimilar thermal coefficients of expansion.
Submerged conditions such as canal and reservoir joints.