Changes

#Install green roof perimeter or vegetation free zones (if applicable) a minimum 2 feet from parapet wall and around other critical infrastructure such as vents or roof drains root free zone. Green roof perimeter may consist of metal edging which will be installed according to design and/or manufacturer’s specifications

#Install green roof perimeter or vegetation free zones (if applicable) a minimum 2 feet from parapet wall and around other critical infrastructure such as vents or roof drains root free zone. Green roof perimeter may consist of metal edging which will be installed according to design and/or manufacturer’s specifications

#Install the root barrier (if applicable) on top of the roof membrane according to design or manufacturer specifications.  

#Install the root barrier (if applicable) on top of the roof membrane according to design or manufacturer specifications.  

##Ensure sheet goes up the parapet wall the full height of the green roof system (if applicable).

#*Ensure sheet goes up the parapet wall the full height of the green roof system (if applicable).

##Where additional root barrier sheets are laid side by side, a minimum of 30 cm overlap between sheets is needed.  

#*Where additional root barrier sheets are laid side by side, a minimum of 30 cm overlap between sheets is needed.  

##Make appropriate slits in root barrier with a retractable knife (away from waterproof membrane) to allow installation around roof infrastructure such as drains, air vents and stacks

#*Make appropriate slits in root barrier with a retractable knife (away from waterproof membrane) to allow installation around roof infrastructure such as drains, air vents and stacks

##Install drainage layers on top of the root barrier according to design or by manufacturers specifications

#*Install drainage layers on top of the root barrier according to design or by manufacturers specifications

#Install filter layer according to design and manufacturer’s specifications. Ensure 30 cm overlap between adjacent rows and it runs up green roof edging (perimeter) the full thickness of the green roof

#Install filter layer according to design and manufacturer’s specifications. Ensure 30 cm overlap between adjacent rows and it runs up green roof edging (perimeter) the full thickness of the green roof

#Place green roof growing medium to specified depth within the design or manufacturer’s specifications. Growing media is typically blown onto the filter fabric layer by blower truck.

#Place green roof growing medium to specified depth within the design or manufacturer’s specifications. Growing media is typically blown onto the filter fabric layer by blower truck.