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Attachment B Green Roof Plan
Attached to the e-mail MCU14/0084 Attachment B (4) Green Roof Plan & Att C - SDAP Module 10 Email 4 of 4.
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Log in to see the plans as drawn6 Alternative Roof Treatment
Alternative Roof Treatment
The following roof treatment is proposed in the event that the green roof is unsuccessful following an adequate establishment period of a minimum of 2 years
and follwoing unsuccessful remedial works in attempt to rectify issues.
1. Waterproof membrane - maintain 10
Waterproof membrane to protect substructure from water damage. 4
2
3
2. Root barrier protective layer - maintain
Root barrier to protect substructure and waterproof membrane.
3. Drainage layer with moisture retention cells -
Retain moisture retention cells where gravel is to installed. (Upper sections of the roof). Remove drainage layer elsewhere.
4. Filter fabric - 1
Retain moisture retention cells where gravel is to installed. (Upper sections of the roof). Remove drainage layer elsewhere.
11
5. Planting substrate - remove
6. Pre-planted coco - coir planting tray - remove
75mm deep coconut coir planting trays pre-planted with native coastal dune species act as a temporary support structure until the plants establish. Coir trays
break down and form part of the growing media.
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7. Woven coir mat - remove
Coir matting will prevent soil erosion and provide surface stabilisation.
8. Intercept Drains - maintain
A grid of intercept drains / gabions will support and contain growing media and pre-planted biodegradable trays. 9
9. Off-form concrete facade - steeper than 45 degrees
Where roof is steeper than 45 degrees an off-form concrete facade is proposed.
10. Gravel infill- install
Install gravel (local quarry rock) in place of planting substrate to upper sections of roof. Nominal size 100mm - 200mm. dia.
11. Timber infill- install Figure 6 - Alternative Roof Treatment Detail (1:20)
Install 200mm x 75mm native HWD timber sleepers in place of planting substrate to mid sections of roof.
Green Roof Proposal
Date : 24.09.2014
Hasler Residence, Seaview Terrace A
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