Chalk Lock®

Chalk Lock® is a fast-drying, transparent coating that protects chalk lines, pencil marks, and other jobsite markings from dirt, wear, weather, and foot traffic. Its low-force precision spray applies without blowing away or spreading the markings underneath, helping crews maintain clear, accurate layouts throughout the job. 

Lock In Your Layout

Chalk lines and layout markings can quickly disappear under dirt, weather, and foot traffic. Chalk Lock® applies a fast-drying, transparent coating over your markings to help keep them clear, visible, and accurate throughout the job. 

Some key benefits of this product are:

  • Low-Force Precision Spray applies without blowing away or disturbing chalk 
  • Maintains Layout Accuracy without causing chalk lines to bleed or spread 
  • Clear Line Visibility keeps light chalk, pencil marks, and other layout markings easy to see 
  • Fast Dry Time allows work to continue with minimal delay 
  • Jobsite-Ready Protection resists dirt, wear, wind, rain, and foot traffic 
  • High Yield covers up to 800 linear feet per can 
  • Versatile Applications for framing, flooring, forming, and general construction layouts 

Packaged in convenient 16 oz. aerosol cans with 12 cans per case, Chalk Lock® delivers controlled, even application for crews that need their layout markings to stay visible and accurate.