Sealant Primers - Sikaflex® Primer-429
Sikaflex primers are special materials formulated to improve the bond of Sikaflex urethane sealants when applied to specific substrates.
Sikaflex® Primer-429 promotes adhesion to clean, sound, and dry concrete, masonry, Exterior Insulation Finish Systems (EIFS), and wood - including teak and mahogany.
- Single-component, ready to use.
- Easily applied by brush, dauber, or spray.
Usage
Most substrates require a primer only if testing shows need for it or where the sealant will be underwater after cure. Certain substrates do require a primer under all conditions.
Advantages
- Single-component, ready to use.
- Easily applied by brush, dauber, or spray.
Packaging
Sikaflex 429 primer is available in pints (6/carton); and gallons (2/carton).
Color
Clear
Product Details
Product Information
Shelf Life6 months in original, unopened containers.
Storage ConditionsSikaflex® Primer-429 shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +40°F and +95°F (+4°C and +35°C).
Application
Consumption
CoverageFollowing are average coverages, depending on porosity of substrate:
Sikaflex Primer 429 Coverage per pint (Liner ft. 1/2” x 1/2” joint): 300 Linear ft.
Application Steps
SUBSTRATE PREPARATIONThe key to good bonding with Sikaflex sealants/primers is surface preparation. Specifically, all surfaces must be dry and free of dirt, grease, mold release agents, loose mortar, laitance, and any foreign matter. If the joint contains old sealant, it and all extraneous material must be removed and the substrate cleaned by mechanical means. Apply primers at substrate temperatures of 40°F and rising. Surface must be frost free.
CLEANING OF TOOLSIn case of spill or leaks, wear suitable protective equipment, contain spill, collect with absorbent material, and transfer to suitable container. Ventilate area. Avoid contact. Dispose of in accordance with current, applicable, local, state and federal regulations.
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