Measure twice, snap once.
Waterproof, windproof, scuff proof snap line chalk.
Permanent marking chalk designed to be used in any chalk reel.
Our Line of Products
Snap a clean crisp line that withstands water, wind, and high traffic job site conditions, ensuring your measurements last until the job is done;
Saving you time from start to finish.
Snap a clean solid line.
What customers are saying about Blackline Chalk.
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"The only chalk that goes in my crews reels"
I know it’s only chalk, but to someone who lives in the elements just like the snapped lines has to, it’s hands down the only chalk that goes in my crews reels.
~ Zack B., Customer
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"Leaves a clean line"
“Leaves a clean line that won't disappear from the job site. The days of smudging, washing away, or blowing a line off the job-site are over. The make of the chalk allows it to permanently infuse with the surface of the material. Its wonderful to finally make a line and not worry about losing it to the elements or spending time protecting it with a clear coat.”
~ Ed Capozzi, The Masonry Man Blog
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"The Ultimate Chalk!"
“This chalk does exactly what it claims to do! This chalk combined with an Irwin Speed-Line Pro Chalk Reel leaves an excellent mark that doesn't come off. The line is crisp, waterproof, and scuff proof. I wish I would've purchased this chalk sooner.”
~ Ed C., Customer
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"Simply the best!"
“This product is worth its weight in gold! Absolutely the best chalk product I’ve used so far! 100% worth it!”
~ William R. Dee, Customer
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"Blackline BL816 chalk works great."
“Handles great, not dusty. Stays in place. Easy to see. Doesn't clump.”
~ David Bryant, Customer
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"Five Stars"
“Works better than local stuff”
~ Michael W. Shannon, Customer
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"Five Stars"
The best!!!!!!! Nothing better!!!!!!
~ MarylMar, Customer
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"Five Stars"
“Arrived as expected and excellent product.”
~ JAMG046, Customer
Permanent black marking chalk that snaps a bold clean line. Designed for application on porous surfaces such as wood and concrete for the highest level of permanence, outperforming traditional chalk with less smudging.
Permanent red marking chalk, designed for application on cured concrete and wood, dark surfaces, and in low light areas. Redline’s pigment provides a highly visible line for cleaner crisper measurements that last long after the job is done.
Safe & Easy Clean Up.
Our product is virtually permanent on the job site, but is easily washed away from hands and work clothing with mild dish soap, laundry detergent, and water.
Let’s talk shop.
Whether you’re purchasing through our online retail store, locating a wholesale distributor, or have questions about Blackline products,
reach out to us and we’ll get back to you in a snap.
contact@blacklinechalk.com
(403) 703-1085
Calgary AB, T2T 0T1
Canada
