JDR Enterprises, Inc. believes greenroofs are about ‘altitude
Our goal is to manufacture, supply, and promote the most efficient, high
quality green roofing drain components and technology to our community.
JDR ENTERPRISES, INC. has been a leading manufacturer of Prefabricated
Drainage Composites since 1982. Our product range includes not only
greenroof applications, but drainage composites for both home and
commercial construction foundation walls, natural and synthetic athletic
field, golf courses, under slab and split slab drainage, plaza deck
drainage and planters.
The greenroof drainage layer is installed over the waterproofing
membrane to remove excess water and prevent saturation of the growing
medium. In some cases, the drainage layer can be designed to retain
water and serve as a reservoir for irrigating plants between rainfalls.
J-DRain GRS is four-feet wide and comes in fifty-foot rolls for easy
A function of the drain layer is the application of a root resistant
filter fabric. It is placed directly atop the drain layer for maximum,
long-term success of the drainage layer. The root resistant filter
fabric prevents roots from affecting the efficiency of the
drainage/aeration layer. It also acts as a filter fabric, preventing
fine particles from being washed out of the substrate soil, ensuring
efficiency of the drain layer.
For greenroof information visit our new greenroof webpage’s at