|
Protection/
Benefits |
Gerard
Tile, Shake
& Canyon
Shake |
Concrete
Tile & Shake |
Fiber Cement
Tile & Shake |
Architectural
Composition Shingle |
Wood Shake |
|
Lightweight |
Excellent
1.4 lbs./sq. ft.,
Average Roof
4,200 lbs |
Poor
9-15 lbs./sq.ft.,
Average Roof
36,000 lbs |
Fair
6 lbs./sq.ft.,
Average Roof
18,000 lbs |
Good
3-4 lbs./sq.ft.,
Average
Roof
10,500 lbs |
Good
3-5 lbs./sq.ft.,
Average Roof
10,500 lbs |
|
Ratings based on Comparison with Gerard, as determined from
manufactured specifications, independent testing
laboratories, and published industry studies and
statistics. |