Wax Bleed
Manifestations
- Waxy substance stains come from reconstituted wood products that are used in producing hardboard siding.
- It may contain staining substances, which bleed through paint and also through some primers.
- This can cause problems such as poor adhesion of paint, dirt pickup and areas of mildew on the surface.
- Causes
- Not applying primer on the hardboard siding prior to painting.
- Letting hardboard siding become weathered before paint is applied.
- Solutions
- Applying a high qualityacrylic latex primer intended for exterior surfaces.
- Allow sufficient drying time.
- Then apply high quality acrylic latex paint made for exterior use.
- Two coats are recommended by the American Hardboard Assoc. to achieve the best results.
- If the grade of hardboard siding you are treating has already been primed at the factory, only the high quality paint is required.
- Do not use low quality paint as it is highly pigmented and more likely to develop wax bleeding than the high quality paint.