Sealant Primers - Sikaflex® Primer-449

Sikaflex® Primer-449 is formulated to improve the bond of Sikaflex urethane sealants when applied to porous substrates.

Sikaflex® Primer-449 is designed to promote adhesion to porous substrates such as porous PVC, solvent-based enamel, PPG’s fluorocarbon Duranar-finish, and certain plastics such as ABS and Plexiglass. Not designed for applications on concrete or cementitious surfaces.

• 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 449 primers are available in pints, 6/carton.

Color

Clear

Product Details

Product Information

Shelf Life

6 months in original, unopened containers.

Storage Conditions

Sikaflex® Primer-449 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

Coverage

Following are average coverages, depending on porosity of substrate:
Sikaflex Primer 449 Coverage per pint (Liner ft. 1/2” x 1/2” joint): 300-500 linear ft.

Application Steps

SUBSTRATE PREPARATION

The 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 TOOLS

In 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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