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Why Cool Metal Roofing’s energy benefits are important?
- The US primary energy consumption is expected to grow 1.1% annually – source EIA
- By 2030, our nation’s electricity demands will be 45% greater than today – source Nuclear Energy Institute
- The level of oil imports will remain between 53% and 68% of our total oil usage through 2030 – source EIA
- "The cheapest, most reliable source of new energy is saved energy." Peter Turnbull, PG&E
| Roofing Material | Manufacturer's Warranty | Life Expectancy | Relative Cost (low=1 high=10) | Special Maintenance Requirements | Fire Rating | Comments |
| 20-year composition 3 Tab shingles * | 20 years | 15-20 years | 1 | None | Class A - good | Economic fiberglass product, but I would recommend the 25+ yr. versions. |
| 25-year composition* * | 25 years | 20-25 years | 2 | None | Class A - good | Upgraded 20-year version, good choice for roofing over existing material. |
| Architectural grade composition 30-40 Yr.* * * | 30-40 years | 30-45 years | 2-4 | None | Class A - good | The variety of styles and textures makes this product very popular. |
| Cedar Shake (Medium and Heavy) | Generally none | 8-25 years | 5-6 | Repair, clean and treat with wood preservative every 3-5 years | None - can be ordered with fire retardant | Requires careful selection of materials and workmanship. High maintenance cost. |
| Treated Cedar Shake (Medium and Heavy)* | 30-50 years | 30+ | 6-7 | None | None | If you must have cedar, this may be the best way to go. Treated with a preservative or a fire retardant. |
| Standing Seam Metal* * * * | 20-40 years | 20-50 years | 5-7 | None | None - non-combustible | Made out of steel and/or aluminum. Factory painted in various colors. Very good for heavy weather locations. |
| Metal - Exposed fastener* | 20 years | 20+ years | 4 | None | None - non-combustible | Tends to hold debris and deteriorate at fasteners. |
| Metal "Shake"* | "Lifetime" ? | 30 years | 7 | None | Class A | This is a new product with a limited "track record", installation requires special training |
| Concrete shakes and Tile* * | 50-60 years | 50+ years | 5-6 | None | Non-combustible | Several styles are available. |
| Hot tar* | Generally none | 10-20 years | 3 | Seal coat every 5 years | None | Best on low sloped roofs. |
| Torch down* * | 10-12 years | 10-20 years | 3 | Re-coat every 5 years | Generally none | Best for flat or low sloped roofs. |
| Natural slate* * * | None | 50-150 years | 10 | Leave it alone | Non-combustible | An excellent roofing product, but not all slate will stand up to wet climate |
| _________________________________________________________________________________________ Roofing Material Ratings ( Depending upon what region you live in) | |||
| * * * = Great! | * * = Very Good | * = Good | No star = Not Recommended |
