About
ProChalk Permanent chalk for weatherproof and waterproof lines that aren’t going to go away any time soon. Most users are choosing this level of intensity for applications that are going to be covered. This level is engineered for more extreme conditions. Exterior applications include exterior layout, extreme conditions, concrete layout, long-term applications.
INTERIOR OR EXTERIOR USE
Applications include interior layout, as well as roofing, siding, and concrete.
| Permanency | Colors | Permanence Rank | Best for | Applications Include |
| Standard | Blue, White | 1 | Interior/Exterior | Interior Layout, Roofing, Siding, Paneling |
| High-Visibility | Lime, Orange, Yellow | 2 | Exterior | Corrections, Plumbing, Electrical, Roofing, Masonry |
| Semi-Permanent | Black, Red | 3 | Exterior | Exterior Layout, Concrete Layout, Roofing, Metal Fabrication |
| Permanent | Black, Blue, Red | 4 | Exterior | Exterior Layout, Concrete Layout, Extreme Conditions, Long Term Applications |
| Ultimate Dye | Black, Blue, Red | 5 | Exterior | Exterior Layout, Concrete Layout, Extreme Conditions, Long Term Applications |
ProChalk Permanent chalk for weatherproof and waterproof lines that aren’t going to go away any time soon. Most users are choosing this level of intensity for applications that are going to be covered. This level is engineered for more extreme conditions. Exterior applications include exterior layout, extreme conditions, concrete layout, long-term applications.
INTERIOR OR EXTERIOR USE
Applications include interior layout, as well as roofing, siding, and concrete.
| Permanency | Colors | Permanence Rank | Best for | Applications Include |
| Standard | Blue, White | 1 | Interior/Exterior | Interior Layout, Roofing, Siding, Paneling |
| High-Visibility | Lime, Orange, Yellow | 2 | Exterior | Corrections, Plumbing, Electrical, Roofing, Masonry |
| Semi-Permanent | Black, Red | 3 | Exterior | Exterior Layout, Concrete Layout, Roofing, Metal Fabrication |
| Permanent | Black, Blue, Red | 4 | Exterior | Exterior Layout, Concrete Layout, Extreme Conditions, Long Term Applications |
| Ultimate Dye | Black, Blue, Red | 5 | Exterior | Exterior Layout, Concrete Layout, Extreme Conditions, Long Term Applications |
