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

#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

#Install the root barrier (if applicable) on top of the roof membrane.  

#Install the root barrier (if applicable) on top of the roof membrane.  

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

#*Ensure sheet is 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 existing 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 existing waterproof membrane) to allow installation around roof infrastructure such as drains, air vents and stacks

##Please note that modular systems often include a root barrier built into the system but some systems recommend doubling up  

#*Please note that modular systems often include a root barrier built into the system but some systems recommend doubling up  

#Install the modular system according to manufacturer specifications or green roof design

#Install the modular system according to manufacturer specifications or green roof design

#If modular system is installed on a slope roof, the system will need to be anchored according to manufacturer specifications or design

#If modular system is installed on a slope roof, the system will need to be anchored according to manufacturer specifications or design