WHITEDUCK 8x20 Canvas Tarp 18 oz Heavy Duty Waterproof - Olive

In this review of the WHITEDUCK 8'x20' canvas tarp the bottom line is clear: this is a heavy-duty, weather-ready cover for industrial, agricultural, and general outdoor use where durability and water resistance matter most. The reviewer found the tight woven, 18 oz/37 mil duck fabric provides a noticeably stiff, long-lasting cover that keeps equipment and stored items dry while allowing minimal airflow to reduce trapped humidity. If you need a robust tarp with reinforced grommets and professional construction, this tarp is worth considering.

Key Features

• Tight woven fabric: The Grade A double-filled duck weave gives a denser, smoother surface that resists tearing and performs well in outdoor applications.
• Waterproof finish: Wax treatment repels water so the tarp prevents seepage and helps keep valuables dry in heavy rain.
• Reinforced grommets: Stainless steel rustproof grommets and poly-vinyl corner patches provide secure tie-down points that resist pull-out under tension.
• Durable construction: Double-stitched seams and rot-resistant thread extend service life through multiple seasons and exposure to moisture.
• Practical tie-down aids: Polypropylene loops at each grommet reduce wear from rope and make all-round tensioning easier and safer.
• High visibility corners: Reflective tape at the corners improves visibility in low light, helping mark hazardous areas at night.

Who It's For

This tarp is best suited for users who need a heavy, dependable cover for tools, machinery, feed, lumber, pergolas, and other outdoor assets where long-term protection from rain and UV is required. Landscapers, farmers, contractors, and homeowners who prioritize tough construction and secure tie-down points will appreciate the materials and reinforcements.

It is not intended for automotive or boat covers that require form-fitting designs or highway use, so buyers seeking a lightweight, temporary sheet or a custom vehicle cover should look elsewhere.

Pros & Cons

Pros

• Very durable Grade A 18 oz duck fabric resists wear and holds shape in outdoor conditions.
• Waterproof wax finish and double-stitched seams keep stored items dry and limit rot on covered objects.
• Stainless steel grommets with reinforced patches and polypropylene loops make secure tie-downs reliable under tension.
• Reflective corner tape and overall solid build make it practical for industrial or commercial settings.

Cons

• Heavier weight makes handling and folding more cumbersome compared with thinner poly tarps.
• Not recommended for use as a car, boat, or highway cover where tailored fit or specialized materials are required.

Specifications

Finished Size	7'6" x 19'6" (approx for 8' x 20')
Fabric Weight	18 oz / 37 mil / 610 gsm
Weave	Grade A double-filled (plied yarn) tight woven duck
Grommets	Stainless steel rustproof, spaced ~2.5-3 ft
Reinforcement	Poly-vinyl corner patches and polypropylene loops at grommets
Stitching	Double-stitched seams with rot-resistant thread
Color	Olive

Our Verdict

The WHITEDUCK 8'x20' 18 oz canvas tarp is a sensible purchase when longevity and weather protection matter; its tight woven Grade A fabric, waterproof wax finish, and reinforced grommets deliver reliable performance for agricultural, construction, and general outdoor storage needs. Buyers who need a heavy, secure cover for seasonal or year-round protection will find it good value despite the added weight; those needing lightweight or vehicle-specific covers should consider alternatives.

Frequently Asked Questions

Is this tarp fully waterproof?
Yes; the waxed-treated, tight woven duck fabric is designed to repel water and prevent seepage while allowing limited airflow to reduce trapped moisture.

Are the grommets durable for heavy tension?
Yes; stainless steel rustproof grommets are reinforced with poly-vinyl patches and polypropylene loops to reduce wear and prevent pull-out under high-strapping conditions.

Can this be used as a boat or car cover?
No; the manufacturer advises these tarps are not intended for cars, boats, or highway use and are better suited for general outdoor, industrial, and agricultural protection.