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Geonets are integrally connected parallel sets of high density polyethylene (HDPE) strands intersecting at different angles and spacings. Geonets have a high resistance to chemicals and are resistant to ultraviolet (UV) radiation. The advanced manufacturing process of high density polyethylene geonet allows for high compressive strength and resistance to punctures and tears. Geonet drainage core offer high flow rates due to their large internal voids. Additionally, the central ribs increase the structural stability of the geonet while still allowing for high flow rate. Overall, geonets are an excellent solution for applications requiring high flow rates and stable drainage channels. There are two main types of geonet: bi-planar and tri-planar. Biplanar geonet is composed of two layers of intersecting ribs. Triplanar geonet, on the other hand, is composed of three layers of intersecting ribs. Both types of geonet have their advantages and disadvantages, and the best choice for a particular application will depend on the specific requirements.


Geocomposites are composed of a geonet core and a heat bonded nonwoven geotextile on one or both surfaces. Similar to geonet, drainage geocomposite provide a controlled/ engineered drainage channel for applications requiring water or gas mitigation. Drainage geocomposites are used in broad range of applications such as landfill liners, drainage channels, canal linings, reinforcement of slopes, MSE walls, and embankments. They are also used in railway tracks, roadways, and airfields. Geocomposites have high compressive strength and shear strength which makes it suitable for many civil engineering applications. 


Geosynthetics have been used for drainage purposes since the early 1970s. Early applications were for sports fields and golf courses. Geosynthetics are now commonly used in a variety of municipal, commercial, and industrial applications. Geonet drainage core materials have several advantages over traditional drainage materials. They are lighter weight, easier to install, and have a lower installed cost. Geocomposite drainage material also provide superior performance in terms of durability, infiltration, drainage channel,  clogging resistance, slope stability, and soil reinforcement. In many cases, the use of geosynthetics can result in a project that requires less excavation and fewer fill material—resulting in a smaller environmental footprint.

Geonets/ geocomposites are commonly used in civil engineering and environmental projects. They are usually placed between two soil layers or in between geomembrane liners. Geonets have a variety of applications, including drainage, filtration, reinforcement, and erosion control. Drainage geonets are used to drain water from behind retaining walls or beneath paved surfaces. Filtration geonets are used to filter out sediments and other particles from water flowing through them. Geonets are also used in landfills for leachate collection, and gas collection systems as prefabricated vertical drains. 

liner installers placing geocomposite drainage material over geomembrane for a landfill

Landfill Cap Installation


Landfill Cap Installation


5 Reasons to Partner with Penteco:

1. Competitive Pricing: As a wholesaler with low overheads, Penteco offers cost-effective solutions without compromising on quality. Our streamlined operations allow us to pass on savings to our clients, ensuring competitive pricing for all our products and services.

2. Comprehensive Engineered Systems: Penteco boasts a dedicated engineering team specializing in a wide range of engineered systems, including soil stabilization, MSE walls, and containment systems. From initial consultation to project completion, our experts provide tailored solutions to meet the unique needs of each project, ensuring optimal performance and longevity.


3. Custom Stamped Designs: Penteco offers custom stamped designs to provide clients with personalized solutions that meet their specific requirements and preferences. Whether it's a unique MSE wall design or a customized containment system, our team collaborates closely with clients to bring their vision to life, ensuring compliance with industry standards and regulations.

4. Extensive Product Range: Penteco offers an extensive range of geosynthetic products and solutions to address various project needs. From geotextiles and geogrids to geomembranes and erosion control products, we provide a comprehensive selection of high-quality materials sourced from reputable manufacturers.

5. Exceptional Customer Service: At Penteco, we prioritize customer satisfaction and aim to exceed expectations with every interaction. Our team is committed to providing exceptional service, from prompt responses to inquiries to on-time delivery of products and support throughout the project lifecycle. When you choose Penteco, you can trust that you'll receive attentive, reliable service from start to finish.

These reasons, along with our commitment to safety, quality, reliability, and expertise, make Penteco the ideal partner for your geosynthetic needs. Contact us today to learn more and discover how we can help you achieve success with your projects.


The Answers You Need

How do geonets and geocomposites compare to traditional natural drainage material (sand & gravel) in terms of cost and performance?

Geonets and geocomposites can be more cost-effective and perform better than traditional natural drainage materials, such as sand and gravel, in certain applications. Here are some ways in which geonets and geocomposites can compare to traditional natural drainage materials in terms of cost and performance: Cost: Geonets and geocomposites can be more cost-effective than traditional natural drainage materials in some cases, especially for large-scale projects. This is because they are often lighter and easier to transport and install, which can reduce labor and transportation costs. Additionally, geonets and geocomposites are typically more durable and long-lasting than natural materials, which can reduce the need for frequent repairs or replacements. Performance: Geonets and geocomposites can also outperform traditional natural drainage materials in terms of their drainage capabilities. For example, geonet drainage cores and geocomposite drainage materials are specifically designed for efficient water drainage, and can be more effective at removing excess water from a site than sand or gravel. Geonets and geocomposites are also typically more resistant to clogging, which can help maintain their long-term drainage performance. Overall, the cost and performance of geonets and geocomposites compared to traditional natural drainage materials will depend on the specific requirements and conditions of each project. It is important to carefully consider these factors and consult with a professional to determine the best solution for a particular application.

How are geonets/geocomposites used in Landfills?

Geonets and geocomposites are frequently used in landfill projects for a variety of purposes, including methane gas collection, separation, drainage layer, and reinforcement. Drainage Geocomposite can be utilized to remove excess water from the site and prevent leachate from escaping into the environment. Some geonets and geocomposites are made with materials that have chemical resistance, which can protect them from leachate and other pollutants present in the landfill. In addition to providing separation and drainage functions, geonets and geocomposites can also be used to reinforce steep slopes in landfills, helping to stabilize the waste and prevent landslides. Also, they provide a protection layer for the geomembrane. Overall, geonets and geocomposites can be a cost-effective and reliable solution for managing waste in landfill projects while protecting the environment.

How long do geonets last?

The lifespan of a geonet can vary depending on a number of factors, including the specific type of geonet, the conditions it is exposed to, and the way it is used. In general, geonets made of high-density polyethylene (HDPE) are known for their durability and resistance to UV light, chemicals, and extreme temperatures. This makes them suitable for long-term outdoor use in a variety of applications. Geonets that are used for drainage purposes, known as geonet drainage products, are typically designed to last for many years. Some manufacturers of geonet drainage products offer warranties of up to 20 years or more, indicating the expected lifespan of the product under normal conditions. To determine the lifespan of a particular geonet product, it is important to consider the test methods that have been used to evaluate the product's performance. Many geonet products are tested according to industry standards or other recognized test methods, which can provide information about the product's expected lifespan under specific conditions. Overall, the lifespan of a geonet can vary depending on the specific product and the conditions it is exposed to. However, geonets made of HDPE and used for drainage purposes are generally expected to have a long lifespan, especially when compared to other products.

How do geonets and geocomposites enhance the durability and lifespan of retaining walls and other structures?

Geonets and geocomposites can enhance the durability and lifespan of retaining walls and other structures by providing reinforcement, erosion control, and drainage functions. Here are some specific ways in which geonets and geocomposites can improve the performance of retaining walls and other structures: Reinforcement: Geonets and geocomposites can provide reinforcement to the soil or other materials used in the construction of retaining walls, helping to prevent movement or settling of the wall. This can help extend the lifespan of the wall and reduce the risk of failure or collapse. Erosion control: Geonets and geocomposites can help prevent erosion on the slopes of retaining walls by providing a protective layer. The geosynthetics can help hold the soil in place and prevent it from sliding or washing away, which can help extend the lifespan of the wall. Drainage: Geonets and geocomposites can also be used to drain excess water from the area around the retaining wall, helping to prevent erosion and soil movement. This can help prevent the wall from being destabilized by excess water and extend its lifespan. Overall, the use of geonets and geocomposites in retaining walls and other structures can provide reinforcement, erosion control, and drainage functions, helping to enhance the durability and lifespan of the structures.

What are the design perimeters for specifying a geonet?

There are several factors that should be considered when specifying a geonet for a particular project. These factors will depend on the specific requirements and conditions of the project, and may include: Load-bearing capacity: The load-bearing capacity of the geonet should be sufficient to support the loads that will be placed on it, including the weight of the soil or other materials above it, as well as any other loads that may be applied. Permeability: The permeability of the geonet should be suitable for the specific drainage requirements of the project. This may include the ability to drain water at a specific rate or to filter out particles of a certain size. Chemical resistance: If the geonet will be exposed to chemicals, such as leachate or other pollutants, it should be made of materials that have appropriate chemical resistance. UV resistance: If the geonet will be exposed to UV light, it should be made of materials that are resistant to UV degradation. Temperature resistance: The geonet should be able to withstand the temperature range that it will be exposed to during its intended service life. Thickness: The thickness of the geonet should be sufficient to provide the desired level of support and protection.

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