Removing parking lot lines without scarring the asphalt

Any time a lot is restriped to a new layout, the old lines have to come off or you end up with two layouts visible at once.

Why grinding disappoints

A grinder removes the paint and a layer of asphalt with it. You get a shallow trench where the line was, which fills with water, collects dirt, and remains visible as a scar long after the paint is gone. In low sun it reads as clearly as the original line.

What blasting does

Media removes the paint from the surface texture with far less substrate removal. Done properly the line disappears rather than becoming a groove. It is not invisible — anything that has been under paint for years is a slightly different colour — but it does not cast a shadow.

What affects the result

• Paint type. Thermoplastic is a different job from traffic paint.
• Age. Old paint has usually worn thin and comes off easily. Fresh paint is harder.
• Asphalt condition. Oxidised, brittle surfaces are more easily damaged.

Relevant to the commercial lots through Box Springs Business Park and along Dunmore Road, where re-striping after a tenant change is routine and scarring the asphalt is the expensive mistake.