Exterior Waterproofing Membrane



The Exterior Waterproofing Membrane is a durable, commercial grade HDPE plastic. It can be used for commercial and residential applications where water is needed to be blocked and/or diverted from a certain area. This material is puncture resistant, waterproof and non-biodegradable with a long material lifespan of 100 years (if not in direct sunlight). It has a built in UV inhibitor to help protect the membrane from ultraviolet light.

This American made product is mildew and rot resistant as well as resistant to rodent and insect damage. The Exterior Waterproofing Membrane is available in various widths and thicknesses ranging from 40 mil to 100 mil. A mil is 1,000th of an inch.


Please Note: The widest rolls that we offer in HDPE are 60” (5ft).

We are also unable to provide custom roll lengths on orders less than 50 rolls.


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

View pricing and product info >


Product Specifics

  • Material: High Density Polyethylene
  • Texture: Smooth
  • Size: Various
  • Free Shipping
  • Need a Written Quote?
    Request Online > 
  • Volume Pricing Available - orders $6,500+
  • Questions? Call (800) 520-7731

HDPE Plastic

  • 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

All of our plastics are professional-grade and are designed for use in both residential & commercial applications. Our plastics are designed for years of continuous use in the designated application.

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 Ships for Free (standard ground, see map)
  • Expedited shipping only available on orders over $2,000 
         Call: (800) 520-7731 for pricing and ship times

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.

Thickness comparison

The below is a thickness comparison of the material. HDPE plastic thickness is measured in "mils" which is "thousands of an inch".

Dimple Drain Board Installation

Drainage Mat Installation

The Different Kinds Of Waterproofing Materials Along With Uses, Costs, & Benefits

In this article, we are going to discuss the different waterproofing materials on the market to help you find what will work best for your upcoming project.

Not only are there many kinds of waterproofing materials to choose from but waterproofing is a must for most structures. Not having the right kind of waterproofing, your home could end up with many problems. Waterproofing is very important for many different reasons.

Speaking of waterproofing, some of the best and most popular waterproofing materials include polyurethane, cementitious coating, EPDM rubber, rubberized asphalt, thermoplastic, bituminous membrane, and PVC waterproofing membrane. Again, not all are the same or for the same use.

In the following, we will go over waterproofing materials, their varying benefits, when they are used properly, and the overall cost. So let's get started -


Again, not all waterproofing materials are the same. For many people, polyurethane is at the top of the list. It provides numerous benefits and many of these benefits cannot be found in other products. This material provides a seamless waterproofing membrane which can make a big difference in your selection. This waterproofing material is perfect for filling capillary cracks and will decrease concrete's water absorbency. Also, this material will harden the uppermost surface of the concrete. It's able to accomplish this because it deeply penetrates the surface. Take heed, there are some risks you should take into consideration. This material can be dangerous. If the material touches your skin, there is a risk you could suffer from adverse health effects that could be short-term or long-term.  Also, if inhaled, there can be serious ramifications.  It's really important to let a professional handle the process when using polyurethane material or you might put yourself in harm's way.  Polyurethane liquid membrane can be used for many purposes or projects.  Polyurethane waterproofing is good for pedestrian decks, water tanks, ponds, balconies, roofs, bridges, parking decks, and many other projects. All said, this material is extremely versatile and can be used for so many purposes.

Polyurethane liquid membrane offers a wide range of benefits. As an example, it helps resist water and will not cause any joints or leak risk areas. The material is water vapor permeable as well.  It offers adhesion for a full surface.  Another important benefit, polyurethane is excellent because it will resist oils, detergents, and other chemicals and therefore a perfect choice for this particular category.

In general, it's estimated that this material will have a working life of 25 years or more. The material will ensure that it will keep your home protected for a long period of time.

Cementitious Coating

The cementitious coating is a powder that includes sand, organic and inorganic chemicals, and silica-based substances. When the active ingredients are combined with lime, it can cause a hydration reaction by creating a waterproof seal. Many professionals prefer to work with this material because it's so easy to use.

As mentioned, the cementitious waterproof coating is very easy to use.  Most products recommend mixing the coating with a specific amount of tap water before applying.  Some experts use an acrylic additive to create a more durable solid coating.

Mix the cement product using the instructions provided by the manufacturer. Add the cementitious coating then mix thoroughly. If you want to use an acrylic additive, add it after the cementitious coating.

Waterproofing Foundation on jobsite

Workers Unrolling Foundation Waterproofing

Like other kinds of waterproofing products, cementitious has its advantages and disadvantages. The leading advantage is its easy application while the biggest disadvantage is a lack of flexibility. This is because cement does not have a lot of flexibility to start with.  Even though concrete does flex, bend, compress, and stretch, it's very minimal.

Cementitious waterproofing products are used for many projects. Professionals use them to create a waterproof seal over concrete structures including foundations, walls, sidewalks, and walkways.  You can use this waterproofing product for a huge range of concrete applications. If you follow the manufacturer's instructions it will offer a durable watertight seal that will last for many years.

These waterproofing products are used to treat water-retaining installations, concrete tunnels, and tanks. They also work well for water treatment facilities.  These cementitious products are available in both spray and liquid forms. It will depend on what you want to use them for so you will know which is best for you. Smaller surfaces can be treated with the spray while larger surfaces will need the liquid formula.

When you use cementitious waterproofing coating to treat potable water tanks, you must be sure it meets the ANSI/NSF Standard 61 which pertains to drinking water treatment.  This standard states that lead cannot be used in products used to treat potable water. Before you decide to use this product, you have to find out if the NSF 61 comes into play.

EPDM Rubber

This is an effective material for waterproofing your roof. It's a synthetic rubber material that can be used for many different situations. It's a class M rubber that is made of ethylene and propylene and is often associated with silicone but the two materials are very different. EPDM rubber is used as a waterproofing coating for roofs and is considered an excellent product. It's also used on vehicles including windows, trunks, and wood.

Exterior Waterproofing Rolls

Two Rolls of Exterior Waterproofing

Rubberized Asphalt

This is another excellent waterproofing material that is great for keeping your home protected from various elements.  Generally, it's found on roofs for commercial businesses.  The 790-11 hot rubberized asphalt is great for two specific applications. If you are working with comprehensive vegetative construction or roofing projects, you want this material. It will prevent problems and provide the very best results.  This material is often used to waterproof the covers of RVs and campers as well. There are many reasons for liking this rubberized asphalt including how tough it is.

Those who have used rubberized aslphalt for some time now know it can handle anything nature can dish out. Also, it's very low in moisture vapor permeance and excellent when it comes to flexibility.  You are going to get the very best results using rubberized asphalt. On top of the many other applications, this material is used for waterproofing bridges, plazas, parking spaces, and commercial roofs.  When it's used on concrete, it will help to cut down on cracking, noise, and hydroplaning. It will also improve the durability of the underlying material. The material normally dries within 3 to 4 hours after application.


This is another very popular waterproofing material. While it's not particularly cheap, it does come with a host of benefits. It's considered one of the strongest materials on the market and on average, it will give you  long-lasting waterproofing for 50 years or more, which is more than many alternatives.

When this material is heated, it will transform from solid to semi-solid allowing a professional to seal the sheets or panels together.  In turn, this makes thermoplastic waterproofing more effective for its intended purpose.  This material also offers elastomers.

Elastomers means they can resist impact much better than some other materials that have been mentioned. Thermoplastic waterproofing can be used for so many reasons and is particularly good for bladder accumulator circumstances. The bladder accumulator is a gas-charged bag fixed in the shell of the accumulator. When pressurized, oil enters into the accumulator and the gas bag compresses. When oil is required, it goes out and the bladder expands. Thermoplastic works great for oil blooms, spill protection, inflatable watercraft, splints, storage bags, and many other uses. The material is also used for pharmaceutical products. It can keep air and liquid out so it's perfect for storage bags for food and water.

The TPU coating will protect tents, flexible ducting, curtains, pipe plugs, and more. It's also used for split slabs, property lines, elevator pits, tanks, fountains, and decks. The downside, this material will cost slightly more than others.

Bituminous Membrane

Bituminous waterproofing is a great product for many applications. This waterproofing is a great choice for commercial and residential buildings.  Bitument is combined with a mixture of substances and bitumen which is asphalt or coal tar.  It's normally made of organic liquids which will be very sticky. and are gummy but long-lasting.  This makes the material effective for many purposes. Also, you should know that it can be great for many applications, It's often used for roof construction and can be found in rolls of roofing material and roofing felt.

One downside, the bituminous membrane is made from crude oil. and therefore not considered a sustainable building product.  Also, the material does not work well in areas that have extreme temperatures. When exposed to these extreme temperatures there will be a great deal of UV radiation so its lifespan will be significantly decreased. Also, the material is combustible and can cause other issues. When applying this material, it will release some fumes. These fumes can lead to respiratory issues in the future.

Rolling on liquid waterproofing

Employee Rolling Waterproofing Material

PVC Waterproofing Membrane

This is a very popular and commonly used roof material that is made from polyvinyl chloride. It's mostly used to waterproof roofs and there are a lot of perks to using PVC waterproofing. To begin with, it's water resistant so you are guaranteed it is going to keep water out. It's also vapor permeable which is one of its biggest benefits. This type of waterproofing material also features a reinforcing base. The base is usually made of glass fiber or polyester mesh. Even though it's usually chosen for roofs, it is also used for tunnels, swimming pools, and underground structures.

You can choose this material from reinforced or unreinforced membranes and both are equally beneficial. With the reinforced membranes, you will get more durability. With the unreinforced membranes, you will have more flexibility and will not end up tearing. One thing that sets PVC apart from other materials is its very easy to install and provides a significantly longer service life.  The only flaw of this material is it allows moisture to escape out of the building's roof area.

Foundation Waterproofing Example

Brush Applied Foundation Waterproofing On House

HDPE Waterproofing Materials

HDPE (High Density Polyethelyne) is a great solution for controlling and directing ground or surface water in a landscape. It is flexible, resists freezing and UV denigration. The material can be placed vertically in the ground and is often used to direct water away from a foundation wall. The material is available in rolls and can be installed by a landscape contractor or homeowner.

Final Word

There are so many excellent choices of waterproofing materials to choose from. Some work better than others so you need to know the differences and realize they are not all going to work the same. You should take your time to find out what will work best for your project requirements. You need to research these materials to find out what will be the most effective for your needs.