CONCRETE FLOORINGS
JOINT PRIMER
BAUFLEX® PRIMER
Solvent‑Based PU Primer for Joint Edges
BAUFLEX® PRIMER is a one-component, solvent-based polyurethane primer formulated to enhance adhesion between concrete joint edges and BAUFLEX sealants. Designed for ease of use, this primer boosts system performance within Bautech's joint sealing range.
Key Features
- One-component, ready-to-use — no mixing required
- Enhances adhesion of polyurethane sealants to concrete
- Efficient coverage — economical application reduces material waste
Benefits
- Promotes robust adhesion across diverse concrete substrates
- Prevents delamination and enhances joint longevity
- Easy-to-apply with predictable consumption and reliable performance
System Integration
BAUCORD, BAUFLEX Primer, and BAUFLEX 35 form the core components of Bautech’s comprehensive BAUFLEX Joint Sealing System, ensuring joints are correctly formed, primed, and sealed.
Application Guidelines
-
Prepare joint edges meticulously — remove dust, loose particles, and moisture.
-
Apply primer using a brush or roller, ensuring full coverage of both joint edges.
-
Allow to dry until adhesive to the touch (approx. 60 minutes, depending on ambient conditions).
-
Proceed with BAUCORD placement and BAUFLEX sealant application once primed area is tacky.
Technical data
| Property | Value |
|---|---|
| Density | ≈ 1.0 g/cm³ |
| Viscosity (Ford cup #4) | ≈ 15 seconds |
| Substrate moisture content | < 4 % |
| Application temperature | +10 °C to +25 °C |
| Ambient humidity | ≤ 80 % relative humidity |
| Consumption rate | ≈ 1 L per 300 m joint length |
| Packaging | 1 L bottle (also available in 5 L) |