Heavy Duty Cotton Duck Tarp – 21oz Waterproof Dark Green Canvas Tarpaulin Sheet

Heavy Duty Cotton Duck Tarp – 21oz Waterproof Dark Green Canvas Tarpaulin Sheet

Our dark green canvas tarpaulin is made from 21oz heavyweight cotton duck — the time-tested material of choice for professional covering applications where synthetic options fall short. Naturally breathable, exceptionally strong, and built for years of demanding outdoor use, this waterproof canvas tarp delivers performance that PE simply cannot match.

Why Choose Canvas Over Polyethylene?

Polyethylene tarpaulins work well for general-purpose jobs, but canvas offers something fundamentally different. Cotton duck fabric allows moisture vapour to pass through while keeping rain out — eliminating the condensation that builds up beneath sealed plastic covers. For vehicles, machinery, antiques, and heritage items, that airflow isn't just a bonus — it's essential. Canvas is the professional's answer when breathability matters as much as weather protection.

21oz Cotton Duck — Serious Weight, Serious Performance

Weighing in at 21oz per square yard, this is among the densest natural-fibre tarpaulins on the market. The tightly woven cotton duck construction delivers outstanding tear resistance, while a wax treatment boosts water repellency without sacrificing breathability. The result is a tarp that handles harsh weather conditions while still letting your covered equipment breathe — the defining characteristic that sets 21oz canvas apart from the rest.

Key Features

• 21oz heavyweight cotton duck — premium natural fibre build quality
• Wax treated for reliable rain resistance with maintained breathability
• Rot resistant treatment for extended outdoor service life
• UV stabilised for long-term exposure without deterioration
• Dark green finish — blends seamlessly into outdoor environments
• Reinforced eyelets for strong, secure rope attachment
• Heavy hemmed edges for superior strength when tying and stretching

Professional Applications

• Vehicle covers — lorries, trailers, classic cars and machinery requiring airflow
• Flatbed transport — the traditional choice across the haulage industry
• Agricultural — produce storage, equipment protection and livestock shelters
• Military & MOD — a standard-issue solution across defence applications
• Events & outdoor venues — a premium look for high-profile covering requirements
• Antiques & collectables — safe, breathable protection for condensation-sensitive items

Canvas vs Synthetic — Understanding the Difference

Canvas tarpaulins are heavier and carry a higher price point than comparable polyethylene options — but they earn it. Natural breathability, a refined appearance, and exceptional durability under sustained heavy use make them the right tool for professional transport, agricultural, military, and heritage applications. For everyday general-purpose covering, our 200gsm polyethylene range offers outstanding value.

Available Sizes

Stocked across a wide range of sizes, from compact vehicle covers to large-scale agricultural sheets. Select your required size above. For bulk or trade enquiries, contact our team directly for pricing.