Absence of Gloss
Dried paint film appears satin or even matte; does not provide gloss characteristics expected of a new finish.
While all paints will lose some degree of gloss over time due to everyday weathering, there are several reasons why new paint may dry to a satin or matte finish. They are:
- Insufficient film thickness: If the final coat of single-stage paint or a clearcoat is applied too thin, finished paint film will not exhibit full gloss potential. This also may occur when material is applied too dry, causing orange peel.
- Insufficient flash time between coats: If solvent does not have adequate time to flash between coats, the result may be loss of gloss in finished paint film.
- Excessive film thickness: Applying too much material in full wet coats can prevent the finished paint film from exhibiting its full gloss potential.
- Poor choice in reducer: The wrong grade or the wrong temperature reducer for the conditions can cause solvents to evaporate too fast, allowing the paint film to dry too quickly, leaving a satin or matte finish. This also may occur if too much solvent is used. Also worth noting: too strong of a reducer or other material can cause the topcoat to lift certain components of the previously applied material, which can cause a less than desirable gloss.
- Insufficient time between different materials: Gloss may be compromised if a topcoat or clearcoat isapplied too soon, or in some cases, before the previously applied material has achieved a full cure.
- Insufficient cross ventilation: It is important to maintain air movement even after application. Closing a paint booth to allow materials to dry too soon can impede the overall gloss development.
Once paint film is cured, compound and polish to restore gloss or scuff sand and reapply paint material.