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GREEN ROOFS (layers to a green roof system (REQUIRED (insulation layer…
GREEN ROOFS
layers to a green roof system
NOT REQUIRED
INSULATION NOT NECESSARY
IT IS NECESSARY FOR THE BUILDING, BUT NOT ESSENTIAL FOR A GREEN ROOF
INSULATION LAYER WILL HELP KEEP THE PLANTS ALIVE
EPS (expanded) blocks for lightweight fill over structure deck
XPS (extruded) insulation board, protection board wand waterproofing membrane
KNOW ROOT BARRIER FOR QUIZ
flashing areas are important
Where water goes, roots will follow
TYPES
impervious concrete, High-Density polythylene DPE, Polypropylene, Copper sulfate impregnated fabrics, copper foil, herbicide embedded fabric - increasingly being prhibited
bio barrier, a secondary root barrier may consist of poylpropylene geo-textile fabrics, impregnated with root inhibitors, applied over he drainage board to prevent roots from filling in the void.
REQUIRED
insulation layer
IRMA KNOW FOR QUIZ - Inverted Roof Membrane Assembly
protection board
this conversation is with the contractor about sequence of installation... this is needed after the water proof test
DRAINAGE LAYER
FILTER MAT
GROWING MEDIA
PLANTS
TYPES
EXTENSIVE
4-6"
INTENSIVE
6"+