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Autoshield GB Primer is a solvent-based polyurethane primer engineered for high-performance automotive glass replacement and industrial glass assembly. This moisture-reactive system functions as a chemical link layer, providing essential UV shielding for transparent substrates while featuring a built-in UV-fluorescent tracer to enable 100% in-process control.
Technicians can prime and degrease surfaces including float glass, ceramic coatings, and E-coated metals to ensure maximum adhesion for polyurethane sealants. To prevent bond failure, the formula reacts with ambient humidity to lock the adhesive to the substrate, achieving a rapid flash-off time of 10 minutes in standard conditions.
The black opaque finish provides a reactive link between the substrate and the adhesive, ensuring the structural integrity of the windscreen fitment under vibration and high-stress environments. To maintain product performance, always reseal the inner plastic liner immediately after every application to prevent premature gelling caused by moisture exposure.
Frequently Asked Questions About Autoshield GP Primer
Q: How do I ensure correct application of Autoshield GP Primer on glass?
A: Clean the glass surface thoroughly to remove dust and grease. Shake the primer can until the mixing ball rattles, then apply one thin, uniform coat using a brush or felt applicator. Let flash off for 10 minutes before adhesive application.
Q: Can I use Autoshield GP Primer in cold weather?
A: Yes, but if the temperature is below 5 °C, additional testing is mandatory. Cold conditions may increase flash-off time and affect performance. Warm the surface or product slightly if practical, or apply in a controlled indoor environment.
Q: Does the primer need to be reapplied if I miss a spot?
A: No re-coating should be done. Autoshield GP Primer must be applied once only. Ensure adequate coverage during the first application. For missed areas, gently remove the existing primer layer and reapply a fresh coat.
Q: What is the significance of the UV fluorescence?
A: The primer fluoresces under 320–420 nm UV light, allowing installers to verify coverage during the process. This is especially useful in workshops with QA checks. The effect fades over time, so inspect promptly after application.
Q: What should I do if the primer starts gelling or thickening?
A: Discard it immediately. Changes in viscosity, separation, or gelling indicate moisture exposure or product degradation. Do not dilute or attempt to remix. Always reseal tightly after use and store as per guidelines.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Automotive Glass Replacement | Improves adhesive bond and long-term durability | Auto Glaziers, Crash Repairers |
| Body Panel Bonding | Improves primer-to-paint adhesion for structural seals | Panel Beaters, Vehicle Fabricators |
| UV Light Blocking for Windscreens | Protects adhesives from UV degradation | Automotive Refinishers |
Autoshield GP Primer Adhesion & Preparation Guide
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Substrate preparation guidelines
- Float Glass: Clean with alcohol-based cleaner. Abrade only if contaminated. - Primer: Required.
- Ceramic-Coated Glass: Clean and apply primer directly. - Primer: Required.
- Ecoated/Pre-Painted Surfaces: Scuff lightly and degrease. - Primer: Required.
- Plastics: Test first. Some plastics prone to stress cracking. - Primer: Required if compatible.
- Metals: Clean and degrease thoroughly. - Primer: Required.
Limitations & Safety
Product limitations and safety information
Limitations:
- Do not apply below 5 °C without pre-testing and validation.
- Do not reapply or layer multiple coats. One-pass only.
- Not suitable for untreated plastics prone to stress cracking.
- Must not be diluted or mixed with other products.
Safety & Handling:
- PPE: Gloves, eye protection, and chemical-resistant clothing recommended.
- Ventilation: Use in well-ventilated areas or under fume extraction.
- Handling: Avoid skin contact. Store upright with lid tightly sealed.
- First Aid: Rinse skin or eyes with water. If inhaled, move to fresh air. Seek medical attention for irritation.
Autoshield GP Primer Adhesion & Preparation Guide
-
Substrate preparation guidelines
- Float Glass: Clean with alcohol-based cleaner. Abrade only if contaminated. - Primer: Required.
- Ceramic-Coated Glass: Clean and apply primer directly. - Primer: Required.
- Ecoated/Pre-Painted Surfaces: Scuff lightly and degrease. - Primer: Required.
- Plastics: Test first. Some plastics prone to stress cracking. - Primer: Required if compatible.
- Metals: Clean and degrease thoroughly. - Primer: Required.
Downloads & technical resources
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