1. Roofing Options for Green Buildings A Materials Comparison

2. Contents Underlayments Living Roofs  Extensive  Intensive Shingles  Asphalt  Cedar  Slate  Recycled Content Steel  Standing Seam  Corrugated Aluminum/Steel

3. Underlayments  Asphalt Saturated Felt / Tar Paper  Synthetic  Self Adhering http://www.graceathome.com/p ages/downloads/TriFlex_Broch ure.pdf

4. Living Roofs  Extensive Living Roof  Intensive Living Roof

5. How Living Roofs Work

6. Green Grid System http://www.buildinggreen.com/auth/article.cfm?fileName=101106b.xml Greengridroofs.com http://www.greengridroofs.c om/Pages/projects.htm

7. Asphalt Shingles  $40-$150/square  ≈2/3 new and existing roofs  Warrantees between 20 and 50 yrs.  Some contain preservatives and moss inhibitors.  Low recyclability.

8. Cedar Shakes  $200-$300/square  Can last 30+ yrs  Renewable Resource*  High amount of maintenance.  Often treated with preservatives and moss inhibitors.

9. Slate Shingles  $900-$1200/square  700-900 lbs/square  Aesthetic Value  Lifetime of 70-100 yrs, sometimes longer.  Minimal processing required.  No affect on water quality.

10. Recycled Content Shingles  $300-$600/square  Provide a similar look to slate, cedar or clay tiles.  Warrantee of 50+ yrs  Resistant to elements  Highly recyclable  Affects on water quality?

11. Solar Shingles  ~$36,000 for 300 sq. ft. of solar roofing  Provides ~80% energy needs  $114/ 17 watt shingle, 12in x 86.5in  Perform as well as conventional shingles  20 years of power output  Oksolar.com, Atlantisenergy.org

12. Solar Shingles

13. Corrugated Metal Roofing  Can last a lifetime  Non-renewable  Highly Recyclable  Exposed-screw fastenings  Lining can rot away  $150/square installed

14. Standing Seam Roofing  Lasts a lifetime  Non-renewable, very recyclable  Covered fastenings, highly weather-proof  $350/square installed

15. CostLifetim e MaintenanceRecycled Content RecylabilityOther Benefits Living Roofs$500/square 40-50 yrs LotsPartialSomeThermal performance, habitat, air purification, hydro cycle Asphalt Shingles $40- $150/squar e 25-50 yrs LittleUp to 25% Not widespread Cedar Shakes $200- $300/squar e 15-30 yrs LotsRenewabl e Slate Shingles $900- $1200/squa re 70-100 yrs No Yes, reusedLow processing, water quality Recycled Content Shingles $300- $600/squar e 50+ yrsNoUp to 100% YesImpact resistance Solar Shingles $12000/squ are 20 yrsNoOn-site energy production Corrugate d Steel $150/squar e 30 yrsLittleUp to 50% Yes Standing Seam $350/squar e 50 yrsNoUp to 50% Yes

16. Bibliography  http://www.greengridroofs.com/Pages/projects.htm http://www.greengridroofs.com/Pages/projects.htm  http://www.graceathome.com/pages/downloads/TriFlex_Brochure.pdf http://www.graceathome.com/pages/downloads/TriFlex_Brochure.pdf  http://www.isola.no/ http://www.isola.no/  http://www.graceathome.com/pages/roofingprod.htm#I_AND_W_SHIE LD http://www.graceathome.com/pages/roofingprod.htm#I_AND_W_SHIE LD http://www.graceathome.com/pages/roofingprod.htm#I_AND_W_SHIE LD  buildinggreen.com  http://www.bobvila.com/ArticleLibrary/Subject/Roofing/Flashing__and_ _Sheathing/Underlayments.html http://www.bobvila.com/ArticleLibrary/Subject/Roofing/Flashing__and_ _Sheathing/Underlayments.html http://www.bobvila.com/ArticleLibrary/Subject/Roofing/Flashing__and_ _Sheathing/Underlayments.html  http://www.interwrap.com/Titanium/titanium-index.html http://www.interwrap.com/Titanium/titanium-index.html  http://www.strongsealroofing.com/ http://www.strongsealroofing.com/  greengridroofs.com  http://www.ci.seattle.wa.us/sustainablebuilding/docs/Roofing.pdf http://www.ci.seattle.wa.us/sustainablebuilding/docs/Roofing.pdf