18oz Heavy Duty Canvas Tarp – Reinforced Grommets


  • Heavy Duty 18oz Canvas
  • Water, Mold & Mildew Resistant
  • Rustproof, #4 Brass Grommets
  • Double Lockstitched Hems
  • Rot-resistant, Polyester thread
  • Treated with Canvak – The industry’s BEST
  • 100% Cotton Canvas – Top Grade
  • Made in the USA by us, not a third party!
  • Due to COVID-19 and the sheer number of orders this season, our manufacturing lead time will be up to 25-30 days before shipment.


Our Brass Spur Grommets measure 1/2″ inner diameter, are extremely durable, and completely rust-proof. We source our grommets from Stimpson, a great American company in Pompano Beach, FL.

Given its durability, this component will certainly outlive every other part of the tarp. Now that’s saying something!

We use the very best thread from Champion Threads in Gastonia, NC. Polyester thread is the most versatile choice for industrial sewing. With the strength of nylon plus UV and mildew resistance, this construction will certainly keep our tarp protecting you through the heaviest of winds and rain.

We use only the top shelf in water, mold, and mildew protection from Buckeye Fabric Finishing in Coshocton, OH on our Heavy Duty Canvas Tarps. This protective coating ranks as one of the best in the industry and has a unique military smell that takes you back in time. Unfortunately, this smell dissipates quickly outdoors but the protection lives on!

Not only are our canvas tarps heavy duty they are also made from 100% Cotton. Talk about a natural and sustainable product! Keep in mind, these tarps are susceptible to small size fluctuations in certain climates, and considering this we do not recommended for over-the-road hauling. If that is your need we suggest our Heavy Duty Vinyl Tarps.

We insert rust-proof #4 brass grommets every 1′- 2′ that have an inner dimension of 1/2″. They are reinforced with triple layer patches. Our panels are double chain stitched together with rot-resistant thread. All hems are 1-1/2″ flat hems and double lock stitched for the best durability. We use Canvak on all of our canvas tarps for the best in water, mold, and mildew resistance. This makes our tarps 18oz after treatment. Canvas is breathable to let moisture out and most importantly keep your valuables dry.

This Heavy Duty Canvas tarp with reinforced grommets has many uses around the home, construction site, farm or wherever you need to keep valuables covered. With Old School construction and reliability, it’s hard to beat a Tarp Nation canvas tarp.

At Tarp Nation, we proudly make all our tarps in the USA!

Extra Components That Make This Tarp Great!


One of the greatest features of a canvas tarp is that it will not trap moisture and heat.

The breathable quality of a canvas tarp is extremely helpful in protecting your valuables from not only moisture but also heat.

Hems & Seems

All hems are double lock stitched and every panel seam is double chain stitched for a significantly superior hold.


What’s with Cut Size and Finish Size?

The Cut Size of a tarp is the size of the material when it is being cut. After all of the hems and seams are made the overall tarp size will be smaller, typically 3-5%.
The Finish Size of a tarp is the actual size after all hems and seams are made.

Things to know about your new tarp

Although very strong, we do not recommend this tarp for highway travel. Since this is a need for some we recommend?our?Heavy Duty Vinyl Tarps.

Your canvas tarp can be re-treated with Canvak?as a result, providing years of service and durability.

This canvas tarp is not fire resistant and therefore will burn if brought into contact with flames.

Need a custom size you don’t see? Give us a call or message us and we will custom make you the perfect tarp!


Thank you for your interest in our products!

Due to COVID-19 & the beginning of our busy season, lead times will be 25-30 days before shipment this year. Please enter your email below to be added to our mailing list.