NRCA has made available The NRCA Vegetative Roof Systems Manual, Third Edition, which provides technical
information for those involved with the design and installation of quality vegetative roof systems.
The publication also addresses waterproofing systems and their associated components—including the protection
course, root barrier, drainage layer and thermal insulation—and overburden of growth medium and plantings.
The NRCA Vegetative Roof Systems Manual, Third Edition is $95 for members and $190 for nonmembers. For more
information, click here.