• Comparing Composite Drains | Prefabricated vs. Thermoformed

    All structures are prone to water intrusion. Because of this, moisture damage has become one of the top litigated aspects of construction today. This damage can come in different forms, such as mold, mildew, rot, rust etc. In addition to the immense structural damage, the inevitable repairs can be financially detrimental to the building owner(s). But can this be prevented?


    Of course it can! The key to combating these issues is ensuring you have control over where the water flows.  


    At Keene, we provide you options to accomplish moisture management specifically for applications such as foundations, planters, slab drainage, green roofs, plaza decks, or balconies. These products are the DriwallTM Prefabricated Composite Drain or Trident Dimple Drain, a high-performance Composite Drainage Mat. First, let’s better understand the terminology being used by defining Composite 




    As a noun, composite is a solid material with two or more substances having different physical characteristics & in which each substance retains its identity while contributing desirable properties to a structural material. As an adjective, composite is made up of distinct separate parts or elements. In terms of Keene’s Composite drains, both the DriwallTM   Prefabricated Composite Drian and Trident both apply.


    Why? Because the material elements that make up the products create a solid whole while having distinct components that differentiate them. When these elements are used in conjunction, they become a functional "Composite Drain." 





    The DriwallTM Prefabricated Composite Drian is produced from an extruded polymer matrix of tangled monofilaments, which are heat-welded at the junctions to form a resilient structure. This product utilizes a non-woven geotextile filter fabric to hold the soil or concrete away from the wall or deck and the core. When using DriwallTM Prefabricated Composite Drian, aggregate for drainage can be eliminated from a construction site. 



    Features & Benefits:   

    • Fire resistant – Class A fire rated product 
    • Minimal deflection, and no creep or long-term degradation 
    • Provides a thin profile for tight construction assemblies 
    • Lightweight and easy to handle 


    Offers variety of sizes:  


    Tracing back to the mythological roots of Ancient Greece, Trident  DD earned its name in respect to the Greek god, Poseidon. As the God of the Sea, Poseidon commanded the ocean water to bend to his will by means of his instrument, the Trident. While Poseidon used the Trident  to weaponize the sea, he also used it as a tool for forcing the water to achieve his desires. This is what we are doing at KEENE with our Trident DD. We have manufactured a building material that forces water to do what we want, which is drain through its designated channels. We may not be Poseidon himself, but our Dimple Drain is the most effective tool for draining water since Poseidon wielded his Trident.   


    The first layer is constructed of a thermoformed, high strength, moisture impermeable, cuspated (dimpled) polystyrene sheet that provides superior compressive strength. Adhered to the high strength, cuspated polymer base is a nonwoven, polypropylene filter fabric. The filter fabric works in conjunction with the HIPS sheet to promote a high-water flow while preventing silt, dirt, and concrete from penetrating the drainage channel.  


    Features & Benefits:   

    • Drainage of Excess Moisture & Ventilation in One Product 

    • Creates an Air Gap Between the Membrane and Foundation Wall 

    • Light-Weight & Easy to Handle 

    • High Performance Filter Fabric 

    • High Strength & Durability 



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