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Waterproof Plastic Sheet


SKU MM-HDPE-18-30-100

Our waterproof plastic sheet is manufactured from HDPE and is available in a variety of different roll sizes ranging from 10” to 60” in width. The material is both tear and puncture resistant and can be purchased in thicknesses ranging from 30 mil to 100 mil. The thicker sheets are less flexible than the thinner but provide enhanced durability. The waterproof sheet ships in a 100’ roll allowing for a long seamless barrier to be installed. The sheet can be installed either below ground or exposed and is designed to last for decades of continuous use. The plastic is UV stabilized to provide resistance to breakdown when exposed to sunlight. Our waterproof plastic sheets are manufactured in the USA. 

Note: Our HDPE plastic is only available in roll widths up to 60 inches.

Please note that we are unable to provide custom roll lengths.


We also offer rigid HDPE in 48" x 96" sheets in both black and white colors.

View pricing and product info >


Product Info

  • Model: HPDE
  • Material: High Density Polyethylene (HDPE)
  • Size: Various
  • Free Shipping
  • Need a written quote? Request Online
  • Questions?  Call (800) 604-5537

Product Benefits

  • Waterproof
  • Commercial Grade
  • UV Resistant
  • Non-Biodegradable
  • Will Not Rot or Mildew
  • Resistant to Rodent and Insect Damage
  • 100 Year Material Lifespan
  • Made in the USA

Connecting HDPE Pieces

There are two ways to connect multiple pieces of HDPE together. One method is to overlap the HDPE and use our double sided seam tape to connect the two pieces. The other method is to butt the ends together and use our 17 mil single sided seam tape to create a solid connection.


Overlap Method
(for underground installations)

The overlap method is best used when connecting two pieces of HDPE in a buried application. Due to the overlap, a ridge is exposed which is not ideal when installed in exposed vertical or flat installations in high traffic areas as there is a possibility of an object catching on the ridge and pulling the two pieces apart.

In a below ground installation, the large overlap area provides a more water resistant connection as well as enhanced protection against tree and plant root intrusion.

View Tape Pricing and Seaming Instructions >

End to End Method
(for exposed installations)

When installing HDPE on a wall, floor or anywhere that is exposed, the end to end method provides a secure connection and does not leave any ridges exposed to potential catching by a person or object.

View Tape Pricing and Seaming Instructions >


  • All HDPE rolls ship for free (standard ground, see map)
  • Call: (800) 604-5537 for pricing and shipping questions.

    Shipping estimates shown on the map pertain to this specific product only. HDPE orders typically ship same day if the order is placed before 12:00 noon CST. Transit times displayed in the map are listed in business days, and are approximate. Transit times are subject to stock levels at regional warehouses.  The day that the order is shipped is not counted as a transit day.

    Stratagrid Shipping Map
    HDPE Seam Tape
    HDPE Seam Tape
    HDPE Seam Tape
    HDPE Seam Tape
    HDPE Seam Tape
    HDPE Seam Tape

    HDPE Seam Tape


    Reasons Why Manufacturers Are Flocking To HDPE Plastic

    HDPE or high density polyethylene, is an amazing plastic in plastic injection molding. HDPE is made from petroleum and thermoplastic polymer offering the best plastic on the market. When it's heated it's very flexible, when it cools down it's hard once again.

    HDPE has a high melting point making it ideal for injection molding. In the 1030s, HDPE was created for short-wave radar cabling during World War II.

    Plastic kids toys

    Kid's Plastic Toys

    What's The Hype Surrounding HDPE Plastic?

    HDPE has many attractive characteristics that have manufacturers wanting more. Its lightweight means products can be transported elsewhere with little cost. It is extremely strong for use in various automobile parts such as the fuel tank. Many households have discovered HDPE plastic is dishwasher safe and will hold up for a very long period of time.

    Other fantastic advantages include excellent resistance to impacts, chemical damage, and several harmful external factors. HDPE is ideal for plastics used outside as it's resistant to weather conditions including UV rays. HDPE plastic can remain outside during damp weather conditions, unlike other materials. HDPE is immune to flood water, solvents, acids, and most chemicals it might come in contact with. Many manufacturers choose HDPE for their products because it resists, rust, insect damage, and rot. This plastic is used for underground pipes for many of the same reasons just listed.

    Another great advantage of HDPE plastic, it's inexpensive to produce and will create an attractive finish in a range of colors and textures that can be transparent or opaque. You can print images, logos, and text directly on the surface. If colors or pigmentation are added to the surface of the plastic, the finished product will actually be stronger.

    Because HDPE is lightweight, it has been replacing heavier, less environmentally friendly plastics used in many industries. The process of molding plastic saves on energy. HDPE plastic will help manufacturers save money and reach their targeted goals. Unlike other plastics, HDPE's longevity properties have made it a popular choice for consumers.

    Since the discovery of HDPE plastic, everyone from consumers to manufacturers are seizing the opportunity to take advantage of this amazing product. This material is giving manufacturing worldwide the ability to increase their line of products due to its incredible flexibility.

    Because HDPE is recyclable, it reduces the impact on landfills and their carbon footprints. HDPE is cost-saving because it can be melted back into a liquid and then reshaped into something completely different.

    If you are shopping for a plastic container, you can find out if the plastic you have chosen is made from HDPE. Look for the symbol on the package that has the number “2” in the center of the triangle shaped by three arrows. If yes, it's a type 2 plastic and is recyclable. Also, the package might have HDPE printed just below the symbol.

      Other Things Made From HDPE Plastic

      To date, HDPE plastic is being used in almost all industries worldwide including:

    • For packages and bottles containing shampoo, detergent, and soap.
    • Bottles as well as containers and cartons are used for milk and fruit juices. Liners for cereal, bags for bread, and carrier bags for shopping are now made from HDPE plastic
    • Fuel tanks, automotive components, and casings are made from this plastic.
    • Flower pots and lawn furniture
    • Both indoor and outdoor toys
    • Shoe lacings
    • A fiber for 3D printing
    • Equipment for playgrounds
    • Picnic utensils
    • Cutting boards
    • Insulation, cables, and pipes
    • Outdoor signs
    • Storage and garbage containers
    • Promotional material
    HDPE Planters

    Plastic Pots

    The Pros & Cons Of Using HDPE Injection Molding

    One of the major concerns regarding HDPE injection molding, it's susceptible to cracking and can be flammable. The materials can be more difficult to bond vs other polymers so steps must be taken to lessen the injection molding process. While HDPE injection molding can be recyclable, it cannot be composted. Also, it has less effective qualities to temperatures than other plastics. It's important to select the right material for objects exposed to extreme temperatures.

    HDPE Cutting Boards

    Plastic Cutting Boards

    In Conclusion

    The invention of HDPE plastic has taken over the world by storm. Due to its many excellent features and properties, consumers have started using HDPE more than any other plastic on the market. Most industries are using this valuable material for everything from bottles, food containers, toys, packaging, and the list goes on. Due to its lightweight, it's so much easier to transport as well as allowing the manufacturing industries to ship the final products somewhere else, saving them time and money.