Heavy Duty Canvas Tarp - Flame Resistant
• 12 oz. cotton duck with 6 oz. FR wax treatment
• Meets CPAI-84 & NFPA 701 standards
• Water and mildew resistant
• Rustproof brass grommets with 1/2" I.D. every 2'
• Double thick, double-stitched hems and seams
Made In The USA
By choosing this product, you're supporting American craftsmanship, local jobs, and ethical manufacturing. Built with care — designed to last.
Reduce Flammability, Maintain Airflow
Stop sparks before they spread. Our treated cotton canvas self-extinguishes in under 2 seconds, which meets the NFPA 701 after-flame limits and confirms the material will resist sustained combustion. Common uses include:
• Welding & grinding screens: Blocks sparks while letting fumes escape.
• Hot-work covers on construction sites: Shields nearby materials during cutting or torching.
• Emergency heat shield: Create quick barriers around boilers, generators, or heaters.
• Farm and heavy-equipment covers: Protects machinery that is still warm after shutdown.
These tarps are typically chosen over vinyl and poly options in situations where breathability is important, as the canvas material allows airflow and helps prevent condensation, while still providing robust fire protection
The Superior Flame-Resistant Cotton Canvas Tarp
Humphrys began in 1874 sewing heavy cotton canvas covers for Conestoga wagons—the freight haulers of the day. These covers were tough then, and they are still tough now. Each tarp starts with premium cotton duck that is treated for lasting water resistance. The reliable construction that served 19th‑century wagon drivers still defines every cotton canvas tarp we make today.
Check out this advertisement we ran back in the early 70s —it’s a reminder that quality never goes out of style.
