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Sika Sikaflex Primer 429 Pint 91133
Sikaflex Primer-429 is a single-component clear primer in a pint for Sikaflex urethane sealants on concrete, masonry, EIFS, and wood. It seals porous substrates so the joint sealant bonds cleanly.
- Promotes urethane sealant adhesion across porous substrates
- Brush, dauber, or spray application for clean dry surfaces
- Recommended by EIFS makers to seal the substrate before sealant
$39.54
Availability:
In stock
( 6 Available )
Sikaflex Primer-429
Sikaflex Primer-429 is a single-component ready-to-use clear primer that promotes adhesion of Sikaflex urethane sealants to concrete, masonry, EIFS, and unfinished wood. This pint (part 91133) applies by brush, dauber, or spray, dries in more than 1 hour and less than 8 hours before sealant, and covers approximately 300 linear feet of 1/2 by 1/2 in joint per pint. Use it when the substrate needs a sealed surface ahead of the urethane joint.
Key Features
- Single-component ready-to-use clear primer
- Promotes adhesion of Sikaflex urethane sealants
- For concrete, masonry, EIFS, and unfinished wood including teak and mahogany
- Dry time more than 1 hour and less than 8 hours before installing sealant
- Coverage approximately 300 linear feet of 1/2 by 1/2 in joint per pint
- Apply at substrate temperatures of 40 F and rising
Applications
- Priming concrete, masonry, and mortar ahead of Sikaflex sealants
- Sealing EIFS substrates before perimeter sealant
- Unfinished wood joints including teak and mahogany
- Porous cementitious substrates that need a sealed face before urethane
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex Primer-429 |
| Part no. | 91133 |
| Unit | Pint |
| Color | Clear |
| Chemistry | Single-component urethane sealant primer |
| Dry time before sealant | More than 1 hour and less than 8 hours |
| Coverage | Approximately 300 ln ft of 1/2 x 1/2 in joint per pint |
| Shelf life | 6 months |
| Min substrate temp | 40 F and rising |
Product documents: Sikaflex Primer-429 Product Data Sheet (PDF)
Frequently Asked Questions
What substrates suit Sikaflex Primer-429?
Concrete, masonry, mortar, grout, granite, unfinished woods, and EIFS systems such as Dryvit, Sto, and Synergy when the maker calls for a sealed substrate.
What dry time applies before installing sealant over Sikaflex Primer-429?
More than 1 hour and less than 8 hours after application.
What coverage should crews plan for Sikaflex Primer-429?
Approximately 300 linear feet of 1/2 by 1/2 in joint per pint, depending on porosity.
What application methods work for Sikaflex Primer-429?
Brush, dauber, or spray onto a dry, clean, oil-free surface after shaking or stirring well.
What temperature limit applies for Sikaflex Primer-429?
Apply at substrate temperatures of 40 F and rising on a frost-free surface.
What size is Sikaflex Primer-429?
The container is a pint, part 91133.
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