Attachment B Green Roof Plan

                                                                  Introduction

                                                                  James Birrell Design Lab has been engaged by the client to prepare a report to address the preliminary design
                                                                  of the green roof for the proposed residential building at Seaview Terrace, Sunshine Beach, Queensland. The
                                                                  proposed project site is located adjacent to Noosa National Park at the northern end of Sunshine Beach on the
                                                                  foredune of the coastline.

                                                                  The topography of the site is sloping with an eastern aspect and comprised of natural foredune heathland and
                                                                  shrubland vegetative cover.

                                                                  The aim of the proposed green roof is to replicate a natural foredune environment where the proposed residential
                                                                  building has a minimal visual and environmental impact on the immediate and surrounding natural environment and
                                                                  ecosystem.

                                                                  Green roofs are known to promote proven sustainable concepts with environmental and economic advantages
                                                                  such as:

                                                                  Environmental advantages:
                                                                  • key advantage is collecting and harvesting stormwater:
                                                                           1. reduces rate of flow from roof through stormwater system, i.e reducing flooding / water pollution.
                                                                           2. green roof substrate filters water as is passes through, providing cleaner water.
                                                     SITE                  3. collected water can be used for irrigation.
                                                                  • minimises surface run-off
                                                                  • reduces heating effect by using planting materials instead of traditional roof construction methods.
                                                                  • Increases biodiversity through use of local native plant species

                                                                  Economic advantages:
                                                                  • Thermal insulation, reducing heating and cooling costs
                                                                  • Increase the lifespan of the roof membrane by directly shading and protecting to the roof membrane and
                                                                      therefore greatly reducing exposure to harsh environmental conditions. This means that the expected lifespan
                                                                      of the roof is much longer than a traditional roof deck. (Sydney City Council Green Roof Design Resource
                                                                      Manual)

                                                                  This report has been prepared to respond to the following items that council have requested information on:
                                                                  1. Proposed green roof design
                                                                  2. Character of the site and indicative plant palette
Photo 1 : Locality Plan - Google Earth.                           3. Proposed drainage, irrigation and substrate (soil)
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                                                                  4. Maintenance
                                                                  5. Stormwater Quality Considerations
                                                                  6. Alternative roof treatment
                                                                  7. Case studies




                                                                                                                                     Project Background
                                                                                                                                                     Date : 24.09.2014
                                                                                                              Hasler Residence, Seaview Terrace                                   A


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