The scratch depth is measured to determine the severity of the scratch and the expected outcome result. The scratch length is measured to determine the material use and the time of the job.
Scratches are categorized in the following levels of severity:
|The scratch is 1/1000" deep or less. The scratch will appear light white in color. It can be restored with no distortion and minimal abrasive steps.
The scratch is over 1/1000". The scratch appears distinctly white in color. It can be removed with multiple steps with minimal to no distortion in the glass.
The scratch is up to 3/1000" deep. The scratch is white in color and can be scalloped on the edges with glass missing along the scratch edge. It requires multiple abrasive and polish steps to remove the scratch and restore clarity. Slight distortion may occur from the repair.
The scratch is deeper than 3/1000" and visible distortion will occur by removing the glass to the bottom of the scratch.
EVALUATE DEPTH & LENGTH
The scratch depth is measured to determine the abrasive steps that are needed and to gauge the blending area to avoid distortion. The scratch length is measured to determine the time spent using each abrasive step and estimate the total time of the job. The scratch depth can be measured using a Digital Micrometer and the thickness of the glass measured throughout the process using an Ultrasonic Instrument.
MASK & PROTECT
The work area is completely covered with painter’s mask, plastic on the bottom and absorbent on the top, and taped into place. Carpets, walls and fixtures will be protected in buildings. Vehicles are masked to protect the paint from any overspray.
The initial scratch is removed using the most robust abrasives that remove the surrounding glass in increments of less than 1/10,000th of an inch per application. When the scratch is completely removed, the glass will be opaque and/or white from the aggressive abrasion.
Clarity is restored by applying lesser abrasives in diminishing stages to create a smoother surface to the glass. As each application of lesser abrasive is applied, additional clarity is achieved. This process can be from three to twelve steps of various abrasives.
Using foam pads the final polish is made with a mixture of rare earths and oxides to remove the residual haze from the abrasives and restore the like-new clarity of the glass.
All masking materials, tape and debris is collected in waterproof containers and removed from the site. All polish residue is wiped clean. There is no trace of work being done in the area.