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  • Tarps by Material & Application
  • Canopies for Outdoor Shelter, Events & Storage
  • Canopy Fittings
  • Canopy Replacement Covers
  • Canopy Box Kits
  • Privacy Fence Tarps 87%
  • Sun Shade Sails 90%
  • Tarps By Size
  • Firewood Rack Covers
  • Fabric By The Yard
  • Accessories

    • Shop by Brand

  • MDM Shelters
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    • 20' x 40' Tarps

    Our 20' x 40' tarps provide large coverage for demanding residential, commercial, agricultural, and industrial applications. This tarp size is commonly used for protecting construction materials, covering large equipment, and creating temporary shelters.

    Available in several materials including poly, vinyl, canvas, and mesh, 20' x 40' tarps are designed to deliver dependable protection in a wide range of outdoor environments. Reinforced hems and rust-resistant grommets help provide secure tie-down and long-lasting performance.

    When choosing a tarp size, remember that many tarps are listed by their cut size. The finished tarp size may be slightly smaller after hems are folded and sewn. Learn more in our cut size vs finished size guide.

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    Common Uses for 20' x 40' Tarps

    20' x 40' tarps are frequently used for:

    • Covering large construction materials and job site equipment
    • Protecting heavy machinery and industrial equipment
    • Temporary shelters and canopy roofs
    • Agricultural storage and hay protection
    • Outdoor storage coverage
    • Large ground covers for construction or landscaping projects

    Available Materials for 20' x 40' Tarps

    20' x 40' tarps are available in several materials designed for different durability requirements and applications.

    • Poly Tarps – Lightweight and waterproof for general-purpose protection
    • Vinyl Tarps – Heavy-duty tarps designed for demanding industrial environments
    • Canvas Tarps – Breathable tarps commonly used for equipment and construction covers
    • Mesh Tarps – Allow airflow while providing shade and debris containment

    Choosing the Right 20' x 40' Tarp

    The best tarp for your project depends on the environment where it will be used and the level of durability required. Lightweight poly tarps work well for temporary protection, while heavier vinyl or canvas tarps provide better durability for long-term outdoor use.

    Because of the large coverage area, it is important to secure the tarp properly using grommets, tie-downs, or bungee cords to prevent wind damage and ensure reliable protection.

    Browse Other Popular Tarp Sizes

    Need a different size? Browse other popular tarps by size to compare dimensions and coverage options.

    Helpful Resources

    Frequently Asked Questions About 20' x 40' Tarps

    What are 20' x 40' tarps used for?

    20' x 40' tarps are commonly used for covering construction materials, protecting large equipment, agricultural storage, and temporary shelters.

    Are 20' x 40' tarps waterproof?

    Poly and vinyl tarps are waterproof and designed to protect materials from rain and moisture, while canvas and mesh tarps may allow airflow depending on the material.

    Are tarp sizes exact?

    Most tarp sizes are listed as cut sizes, and the finished tarp dimensions may be slightly smaller after hems are sewn.

    Do 20' x 40' tarps include grommets?

    Most tarps include rust-resistant grommets spaced around the edges for secure tie-down.

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