Thursday, July 21, 2011

Tech Tip: Staining/Bleed Through (discoloration) of paint surface.


TECH TIPS
Staining/Bleed-Through (discoloration)
Cause:  A) Using too much or too little hardener in the putty or body filler.
             B) Insufficient mixing of putty or filler components
             C) Applying a surfacer, sealer and/or topcoat before putty/filler has thoroughly cured.
             D) Clearcoating a white or light color without using a stain-free body filler (RAGE Gold).

Repair:  1) Allow topcoat to thoroughly cure.
              2) Sand affected area, isolate with two-component undercoats and refinish.

Prevention:  A) Use correct amount of body filler hardener
                    B) Mix components thoroughly.
                    C) Allow putty or filler to cure thoroughly before topcoating.
  D) Apply undercoats and/or topcoats in medium-wet to wet coats; allowing proper flash  time between coats.
                    E) Use non-staining body fillers (RAGE Gold), especially when clearcoating light colors.
                    F) Isolate suspected staining filler by applying a two-component surfacer and sealer.
                        Allow to cure, following product recommendations, then apply desired topcoat.

For all your automotive paint and body shop supplies:  66 Auto Color

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