1. Design Aspects of the Arboretum Green Roof Green Roof Symposium

5. Project Issues: Shady location Close to natural grade Teaching tool for arboretum

6. University Issues: Risk Management - 70% lawsuit/roof failures ratio Maintenance Warranties BCOM Approval

7. A Short History of Roofs… there are several types of roofs: roofs that shed water: ▪ metal roofs ▪ shingle roofs

8. A Short History of Roofs… roofs that are barriers: ▪ EPDM ▪ TPO ▪ Modified Bitumen ▪ PVC ▪ single-ply roofs (sheets) - ▪ liquid-applied membranes there are several types of roofs:

9. A Short History of Roofs… typical single-ply installations: there are several types of roofs:

10. A Short History of Roofs… IRMA roofs: there are several types of roofs:

11. A Short History of Roofs… green roofs: there are several types of roofs: ▪ extensive/intensive ▪ planted in place ▪ green grid green roofs:

12. the JMU Arboretum will be extensive green roofs: ▪ extensive/intensive

13. advantages: ▪ wrap around warranty ▪ membrane by a reputable local installer disadvantages: ▪ more costly to repair leaks ▪ single supplier requires exemption from BCOM ▪ immature plants may be installed in summer, requiring watering green roofs: ▪ planted in place

14. green roofs: ▪ green grid advantages: ▪ grids are removable for repair ▪ can be installed on any roof membrane ▪ plants can be installed later, once established & more mature disadvantages: ▪ no wrap around warranty with preferred roofing manufacturer ▪ possible additional cost ▪ single-source exemption from BCOM ▪ available details ▪ warranty

15. critical steps: ▪ provide information on each system ▪ technical information ▪ research references for each system ▪ find installations for client to view ▪ create comfort with decision architect as advisor:

16. JMU arboretum