Spot Paint Repair and Blend Matching in Yorba Linda

The repair area gets full color. Then each successive coat is carried further out than the last, at reducing coverage, so the new base thins into the old surface over a distance rather than ending at a line. Over the whole blended zone goes fresh clear, taken out to a natural break where clear can end without showing.

The two variables that decide whether this works are distance and break placement. Distance because a metallic needs a longer blend than a solid, since flake orientation differs slightly between a new panel and a ten year old one and the eye reads that difference as a color shift. Break placement because clear has to terminate somewhere, and where it terminates has to be a place light does not reveal it.

On a coach, valid clear breaks are a graphic edge, a molding line, a cap seam, a body crease or a slide perimeter. Invalid breaks are the middle of a flat sidewall in direct sun. If the only available break is 12 feet from the damage, then the blend zone is 12 feet, and the hours reflect that regardless of the damage being the size of a hand.

Two reasons. First, most RV sidewalls have no seam to stop at. The laminated panel runs the length of the coach. A painter accustomed to automotive work will look for a boundary that does not exist and end up creating an artificial one, which is visible forever.

Second, even where a boundary exists, hard edging a repair against a faded adjacent surface produces a step in both color and gloss. New clear at full gloss against ten year old clear at 60 percent gloss reads as a rectangle even when the color is dead on. The eye is far more sensitive to a gloss discontinuity than to a small hue difference spread over distance.

That is why a blend on an aged coach usually includes polishing the surrounding surface as part of the job. Bringing the old clear up in gloss and bringing the new clear down slightly with a light cut puts them close enough that the transition disappears.

Anything that has not compromised the substrate and sits within reach of a legitimate clear break. Rock chips, key scratches, a scuffed corner, a section of clear failure isolated to one area, or a repaired dent that only needs refinish.

What is not worth spot repairing is damage sitting in the middle of a large open surface on a heavily faded metallic. In that case the blend zone becomes so large that refinishing the entire surface costs the same or less and produces a better result. We tell customers when that line has been crossed instead of quoting a blend that will not hold up.

The other disqualifier is substrate condition. If the area around the damage has debonded laminate or lifting clear, blending into it means blending into a surface that is about to fail. That gets addressed first or the repair is temporary by design.

• Rock chips and stone damage on caps and lower sidewalls
• Key scratches and parking lot contact through the clear
• Isolated clear coat failure in one area of an otherwise sound finish
• Refinish over a repaired dent or minor collision area
• Scuffs from gate posts, fuel islands and low branches
• Touch in of areas disturbed by accessory removal or installation