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J Drain GRS - Green Roof Drainage System

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 Product Description


 For Best Pricing Please Call: (800) 950-4972

Product Description:

J-DRAIN GRS consists of a impermeable polymeric sheet cuspated under heat and pressure to form a high flow dimpled drainage core. The core is perforated, then bonded to top root resistant filter fabric and bottom protection fabric, specifically designed for Green roof applications. The top root resistant filter fabric prevents roots from affecting the efficiency of the drainage/aeration layer and retains soil or other fine particles from being washed away and allows water to pass into the drainage core. The bottom protection fabric safeguards the waterproofing membrane. The core is installed dimple side down to allow water retention. The excess water is collected and conveyed to a proper collection system.





  • Easy install / No loose fabrics
  • Pre-assembled drain system 
  • 100% Post- consumer recycled filter fabric (ECO) 
  • Root, mildew & rot resistant 
  • Water retention chambers (1.1 gal/10 sq. Ft.)
  • Reduces weight of greenroof (no gravel necessary) 
  • Low Cost
  • Filters fine particles 


Additional Information:





(800) 950-4972


Volume Discounts Available

on Orders Over $5,000

Contact us for volume pricing.


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