Shipping
1 - 2 Days
Heavy Duty Canvas Tarp
• Water and mildew-resistant canvas tarp
• 12 oz. cotton canvas with 6 oz. wax coating
• Rustproof #4 brass grommets with 1/2" I.D.
• Rot-proof polyester thread
• 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.
Shipping
1 - 2 Days
American-Made Canvas Tarps Since 1874
Humphrys began in 1874 sewing heavy duty canvas covers for Conestoga wagons. These water-resistant canvas tarpaulins were built to last then, and our canvas tarps are even tougher now.
Each heavy duty canvas tarp starts with premium 12 oz. cotton duck canvas, then receives a 6 oz. wax treatment for lasting water resistance. The same reliable construction that protected 19th-century wagon cargo still defines every canvas cover we manufacture in our Philadelphia facility today.
Check out this advertisement from our 1974 catalog. It's proof that quality heavy duty canvas never goes out of style.
American History in Every Canvas Tarp
Canvas Tarps: Breathable & Water-Resistant
Breathable Design Stops Moisture Damage
Unlike waterproof vinyl or poly tarps, heavy duty canvas tarpaulins allow airflow beneath the cover. This breathability prevents condensation buildup that causes rust, mildew, and rot on stored equipment, lumber, and machinery.
Water-Resistant Treatment Sheds Rain
Our canvas tarps are treated to repel light to moderate moisture while allowing trapped humidity to escape. For maximum protection in wet conditions, apply Canvak Canvas Protectant to enhance water resistance. Learn more about waterproof vs. water-resistant tarps.
Temperature Control for All-Season Use
Breathable canvas covers reduce heat buildup under the tarp, keeping stored materials closer to ambient temperatures. This makes heavy duty canvas ideal for protecting equipment, firewood, vehicles, and temperature-sensitive materials year-round.
| Hem Options for Made-To-Order Tarps | |
| Flat Hem: This is the standard hem that comes with this product. It consists of double-folded edges with three corner grommets, plus grommets installed at either 2' (standard) or 1' intervals. The hem is then chain-stitched on either side. |
 | Grommets with Patches: Similarly to the Flat Hem, this hem is double folded with grommets installed every 2 feet. Unlike that option, though, this hem also includes patches of reinforced fabric underneath each grommet to provide extra strength. |
 | D-Rings with Reinforced Patches: Ideal for securing large loads, this configuration uses webbing and steel-plated zinc D-rings plus four-layer patches every 2'. The 1-1/8-inch D-rings accommodate standard webbing and handle heavier weights. Made in America, they remain reliable in harsh conditions. |
 | Rope In Hem: Spread load along the entire edge of the tarp, dramatically reducing the risk of tearing from tension. This is the option you want if your canvas tarp is going to be relied upon for the most demanding of jobs and conditions. |
Wax Treatment
Will initially leave a slight rub-off or odor. Best suited for outdoor use.
Brass Grommets
Corrosion resistant 1/2" I.D., spaced every 2" on all four edges.
18 oz. Post-Treatment
After it’s treated, the 12 oz. cotton duck becomes heavier—18 ounces per square yard.
Polyester Thread
Treated to resist rot and UV, seams and hems will not be failure-points.
Full Finished Size ±3%
Accounts for minor size variation due to fabric shrinkage, sewing, and treatment.
Anti-Static Cotton Canvas
Safer for use in settings where static discharge could cause damage or risk.
Custom Sizes Available
Need a different size or style? Request a quote.
Made in the USA
Manufactured in our Indiana facility.
