Keson 5 lb. Glo-Orange ProChalk Standard Grade Marking Chalk

Make your layout lines impossible to miss. Glo-Orange ProChalk delivers bright, high-contrast snaps that stand out on wood, concrete, and sheathing—perfect for framing, roofing, masonry, and general layout. The standard-grade, finely milled formula feeds smoothly, holds to the line in dry conditions, and wipes or rinses away when the job’s done. The bulk 5 lb jug keeps crews moving with fewer refills and less downtime.

Key Features

• High-visibility Glo-Orange color: Bold, easy-to-spot lines for fast checks at a distance.
• Standard/removable grade: Designed for temporary marks; cleans up with a wipe or rinse (always test first).
• Finely milled formula: Smooth loading and sharp, consistent snaps with minimal clogging.
• Strong adhesion in dry conditions: Clings to wood, concrete, drywall, and subfloor sheathing.
• Universal compatibility: Works with most chalk line reels from major brands.
• Bulk 5 lb jug: Fewer refills and better value for crews and big jobs.
• Jobsite-friendly container: Resealable cap and pour spout to help prevent spills and caking.
• Versatile applications: Framing/layout, roofing lines, fence runs, and general construction.

Brand/Model: ProChalk Standard Grade, Glo-Orange

Product Type: Marking chalk powder for chalk line reels

Color: Glo-Orange (high-visibility orange)

Material: Finely milled calcium carbonate with inert pigments and flow/anti-caking additives

Form: Dry powder

Net Weight: 5 lb (2.27 kg)

Container Type: Resealable plastic jug with pour spout

Dimensions (Container): ~10 × 6 × 4 in (approx.; varies by packaging)

Compatibility: Standard chalk line reels (most major brands)

Surface Suitability: Wood, concrete, drywall, OSB/plywood, subfloor sheathing (best in dry conditions)

Permanence: Standard/removable grade; typically wipes or rinses off (always test first)

Mark Visibility: High-contrast, easy-to-see lines for general layout

Primary Use Cases: Framing/layout, roofing, masonry, fencing, general construction

Operating Conditions: Use in dry weather for best adhesion; avoid saturated/oily surfaces

Storage: Keep sealed and dry; avoid humidity to prevent clumping

Safety Notes: Avoid inhalation/eye contact; follow basic dust precautions

Country of Origin: Varies by batch (check product label)

Manufacturer Part Number (MPN): Varies by supplier (commonly listed as ProChalk Glo-Orange 5 lb)

Q: Is Glo-Orange standard grade chalk permanent or removable?
A: It’s standard/removable. Marks typically wipe or rinse away; always test first on porous or delicate finishes.

Q: How visible is Glo-Orange compared to blue or white?
A: The high-visibility orange pigment pops strongly on wood, concrete, and sheathing, often standing out more than white and many blues for long-distance checks.

Q: What surfaces and conditions give the best results?
A: Use on dry wood, concrete, drywall, OSB/plywood, and subfloor sheathing. Dry weather yields the strongest lines; humidity and wet surfaces reduce adhesion and longevity.

Q: Any tips for cleanup and avoiding stains?
A: Don’t overload the reel, snap on clean, dry surfaces, and clean soon after use. Start with a dry brush, then a damp cloth if needed; avoid harsh cleaners on sensitive finishes.