Why Choose a Composite Drainage Material?

Why Choose a Composite Drainage Material?

Information technology (IT) refers to the computer systems, hardware, software, and networks used by an organization to store, process, and distribute data. It also includes the people who manage these systems.

A drainage composite is a prefabricated, multi-functional geosynthetic material that performs multiple geosynthetic functions such as protection, separation, filtration, and drainage. It is easy to install and can be used in a wide variety of applications.


Unlike traditional French Drains, which require a wide trench to install pipe and crushed stone enveloped in geotextile fabric, drainage composites offer a one component system. The composite is installed in a narrow trench and embedded in washed concrete sand. The sand helps prevent soil fines from clogging the geotextile surface of the drainage composite.

This type of geosynthetic combines a molded three-dimensional plastic core with non-woven filter fabric on one or both sides. These drainage geocomposites fulfill multiple of the five primary geosynthetic functions: separation, reinforcement, filtration, and drainage.

Drainage composites are ideal for applications like commercial and residential composite drainage material landscaping, athletic field drainage and highway edge drainage. They can also be used for green roof and foundation drainage, behind retaining walls and along the face of bridge abutments.

Team EJP manufactures its own drainage composite product line, called EJP-DRain, which has exploded in popularity due to its long term performance and low initial installation cost. This drainage composite is available for sale in all 50 states and has been widely adopted by landscape architects, civil engineers and contractors.


Drainage is an essential component for any project, ensuring that soil erosion and foundation damage are minimized. It’s also important to choose a material that is durable and long-lasting, which is where composite drainage materials excel. These innovative products offer unparalleled performance compared to traditional alternatives, including better hydraulic properties and resistance to clogging. They also require minimal maintenance, saving you money on expensive repairs down the road.

Prefabricated composite drains feature a formed polymeric core with nonwoven geotextile filter fabric bonded to one or both sides. They can be used to replace traditional gravel-covered drains or in landfill liner applications to intercept and convey leachate from capillary zones or to relieve hydrostatic pressure buildup against the subterranean surface.

A geocomposite’s datasheet should present a range of relevant information to help designers evaluate the product’s suitability for their application. This includes in-plane flow capacity, reduction factors for creep, chemical clogging and installation damage and a wide-width tensile strength. For example, the drainage geocomposite DriwallTM prefabricated composite drain has an in-plane flow reduction factor of less than 5%.


A major advantage of drainage composites is their long lifespan. They can withstand repeated exposure to moisture, chemicals, and UV radiation without losing their strength. This durability makes them a cost-effective alternative to traditional materials that require frequent replacement and maintenance.

Typically, drainage composites consist of a molded three-dimensional plastic core surrounded by a nonwoven geotextile fabric. The core provides separation, filtration, and reinforcement functions. In addition, it also helps to prevent clogging by fine-grained soil particles. Moreover, the composite is designed to reduce soil erosion and prevent foundation damage by channeling water away from buildings.

Drainage composites are ideal for residential, commercial, and industrial construction projects. Their superior performance, longevity, and durability ensure that they provide a high return on investment. Additionally, they are extremely easy to install and offer a variety of benefits that will revolutionize the way your construction project is carried out.

Incorporating drainage composites in your construction project will save you time and money, as well as prevent costly issues caused by water infiltration. Strata’s innovative drainage systems can help you avoid costly repairs and protect your structures from water-related damage.

Resistant to Clogging

Drainage composites are prefabricated geosynthetic products that combine multiple functions of separation, filtration, and drainage. They are made up of a molded three-dimensional polymer core that is surrounded by a woven or nonwoven geotextile. The fabric allows water to pass through but restricts the movement of soil particles that could clog the core.

Typical drainage geocomposites contain a high-density polyethylene (HDPE) geospacer or a geonet sandwiched between two needlepunched nonwoven geotextiles. However, innovative multilinear drainage geocomposites use perforated mini-pipes in place of the geonet. The drainage capacity of these products is comparable to granular drainage materials when tested under similar conditions.

The flow rates of drainage composites depend on many factors, including the hydraulic gradient, the boundaries, and seating. These factors are difficult to control during construction, which is why they’re often compared to granular drainage materials.

It’s important to note that the tensile strength values listed on a drainage geocomposite datasheet are meaningless in design, since the HDPE core is susceptible to Environmental Stress Cracking (ESC). ESC failure can lead to reduced in-plane flow resistance and downstream settlement.

Easy to Install

Drainage composites are easy to install, providing an alternative to traditional french drains. They are made from a three-dimensional plastic core bonded to a non-woven geotextile fabric that is resistant to clogging, which makes them an ideal drainage product for foundation walls and tunnels. They also help to relive hydrostatic pressure buildup against subterranean surfaces.

The TREMDrain 6600 drainage and protection board is compatible with PROCOR fluid-applied waterproofing membranes, as well as BITUTHENE spray-applied waterproofing membranes. It has a nonwoven, needle punched polypropylene filter fabric heat-bonded to a Plastic Dimple Drainage Board formed, high-compressive strength and high flow capacity core. The woven fabric helps prevent soil particles from passing into the core, but allows surface moisture to pass through.

To install the drainage composite, simply unroll it with the flat side facing the wall or waterproofing membrane. Then, tape or adhere the fabric overlap to the adjacent sheet to ensure continuity. Lastly, cut drainage composite neatly around any penetrations or projections. The 4′ x 50′ rolls ship from both east and west coast warehouses to help ensure timely delivery.

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