Shipping
2 - 3 Weeks
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 treatment
• Rustproof brass grommets with 1/2" I.D.
• Double thick, double-stitched hems/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.
Shipping
2 - 3 Weeks
Breathable & Antistatic
Why use canvas tarps made from cotton duck in a world full of tarps made from high-tech polymers? The natural fibers and permeable weave give canvas tarps two major advantages:
Breathability: Canvas tarps are treated to be water repellant, but vapor can still pass through. This natural breathability means moisture will not be trapped underneath, avoiding issues with rust, mildew, and mold that fully waterproof tarps can cause.
Antistatic: The cellulose fibers in cotton naturally resist static buildup, so canvas tarps are a great solution for environments where sparks are dangerous.
Control Fire Risk, 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
Advertising Canvas in the 1970s
Humphrys started in 1874 sewing heavy cotton canvas covers for Conestoga wagons, and we’ve been manufacturing canvas tarps ever since. New fabrics and technologies have come along, but there is still a place for a good old-fashioned canvas tarp. This clip from our early 1970s catalog is a great example of its long-standing role in our line.
American Greatness in Every Stitch
| Hem Options for Made-to-Order Tarps | |
 | Flat Hem with Grommets: This standard hem has double-layer edges, #4 rolled-rim brass grommets, and spur washers. Each grommet measures 1/2" inside diameter, is pvd-coated black, and is naturally resistant to corrosion. |
 | Grommets with Reinforced Patches: Recommended for higher tension settings, this version adds three extra layers of canvas around each grommet for added strength. It uses the same #4 rolled-rim brass grommets and spur washers as the flat hem, save with thicker material to manage load on each grommet. |
 | D-rings with Reinforced Patches: Designed for tasks like securing truck bed loads, this style includes reinforced canvas patches and steel-plated zinc D-rings. Each 1-1/8-inch D-ring is sewn onto seat belt webbing for stronger hold. Four-layer reinforced patches add further durability. Made in America, they perform well in tough conditions. |
Take a look at this quick demonstration of the fire retardant properties of our 18 oz. Flame Resistant Canvas Tarp. To learn more about how this works, read our article all about fire retardant tarps.
100% Cotton Canvas
Made entirely from natural cotton fibers, with no synthetic material blended in.
Brass Grommets
Corrosion resistant 1/2" I.D., spaced every 2" on all four edges.
Wax Treatment
Can leave a slight rub-off or odor (best suited for outdoor use).
18 oz. Post-Treatment
After it’s treated, it becomes heavier—18 ounces per square yard.
Breathable - No Condensation
Keeps items dry without sweating, reducing the risk of mold, mildew, and rust.
Full Finished Size ±3%
Accounts for minor size variation due to fabric shrinkage, sewing, and treatment—about 3% larger or smaller than the listed size.
Custom Construction Available
Need something even more custom than our Made to Order service? Get in touch.
Made in the USA
Manufactured in our Indiana facility.
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