NRCA's new green roof systems manual
This month, NRCA is publishing The NRCA Green Roof Systems Manual—2007 Edition. This new manual provides NRCA's best-practices guidelines applicable to the design, materials and installation of quality vegetative green roof systems.
The manual is arranged into three primary sections: General Green Roof Project Considerations, Green Roof System Guidelines and Green Roof System Construction Details.
The project considerations section provides project information concerning the design and installation of green roof systems. For example, for horizontal green roof systems, NRCA strongly recommends the waterproofing membrane be water-tested before the installation of overburden to ensure watertightness.
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