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
Built to Breathe — Water Rolls Off, Moisture Escapes
Condensation Control:
The breathable canvas design allows airflow beneath the tarp, helping trapped humidity escape. This reduces condensation buildup and minimizes the risk of mildew that often forms under fully airtight covers.
Balanced Moisture Protection:
A wax-treated heavy duty canvas tarp sheds rain effectively while still allowing moisture to evaporate. This balance helps protect materials like lumber, produce, equipment, and machinery from rust, rot, or spoilage.
Temperature Regulation:
Unlike plastic covers, breathable canvas reduces heat buildup. This helps keep stored items and covered work areas closer to ambient temperatures, improving protection in changing weather conditions.
Canvas Tarps in our 1974 Catalog
Humphrys began in 1874 sewing heavy cotton canvas covers for Conestoga wagons. These covers were tough then, and our tarps are even tougher now. Each tarp starts with premium 12 oz. cotton duck that is then given a 6 oz. wax treatment 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.
American History in Every Stitch
| 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.
