Advice on paint defects
Swelling and Lifting of the substrate layers when new paint is applied. Problem may appear during the painting process or on drying.
- Flash-off time too long when working wet-on-wet with some 2K-Products (recoating during Gel-phase).
- Recoating solvent-sensitive layers (NC/ TPA) with the wrong repair materials or when layers are too thick.
- Coats used as a sealer are not thick enough (sprayed too thin or when sanded down too far).
- Substrate layers not thoroughly dried.
How to avoid
- Always keep to the recommended Flash-off times.
- Carry out a Solvent Test, use the correct repair process and use the correct film thickness.
- Use the correct Film Thickness as advised in the product technical data.
- Ensure that the substrate is dry. (Re-bake or use IR lamps).
Sand down the paintwork back to a sound substrate. Rework using suitable Primer and Top Coats. (If necessary be prepared to strip back to a sound substrate).