|
RE-ROOFING SYSTEMS
SELECTION CRITERIA CHECKLIST |
|||
|
If you are replacing a wood shake roof and wish to maintain the current wood shake appearance but anticipate using a next generation wood substitute material in place of wood, use the following checklist of critical factors to capture your perceived needs and expectations and to convey them to your contractor or supplier. |
|||
|
Roof Appearance
Suggested
|
|||
 |
Wood shake appearance | Copy of real wood shake | |
|
|
Butt thickness ____ inches minimum | 5/8 to 1 inch | |
|
|
Installation pattern - straight line - staggered - random |
Personal preference | |
|
|
Shake exposure _____ inches minimum | 10", if straight line | |
|
|
Spacing between shakes ____ inches maximum | 3/8 inches | |
|
|
Color-after aging | Aged cedar | |
|
|
Coloring method | Pigmented throughout | |
|
|
Individual pieces or panels | Individual pieces | |
|
|
Preapproved by local authority or association | Yes | |
| Roofing Material | |||
|
|
Composition-material compatibility | One homogenous material | |
|
|
Water absorption | Impervious to water | |
|
|
Conformance to roof deck | Flexible-self conforming | |
|
|
Weight-installed | Less than wet cedar | |
|
|
Expansion/contraction | Very low | |
|
|
Matching accessories-starter, hip and ridge | Same material-code demands | |
|
|
Sealers and/or coatings | None required | |
|
|
Impact resistance | UL 2218 Class 3 minimum | |
|
|
Walkability | Yes, without special precaution | |
|
|
Recycled material content | Significant | |
|
|
Snow/ice release | Slowly, like wood | |
|
|
Thermal insulating value | Like wood, min. 1 R per inch | |
|
|
Impact self-healing | Yes, like wood | |
|
|
Solid or hollow backed | Solid | |
| Installation | |||
|
|
Color pattern-installed | Does not require on-the-roof sorting | |
|
|
Install roof covering - directly on roof deck - on spaced sheathing |
Same as existing roof material | |
|
|
Class A fire rated installation | If required by code or desired | |
| Warranty | |||
|
|
Minimum ____ year, transferable | 40-50 years, once | |
|
|
Hail warranty-minimum ____ inch diameter | Depends on location | |
|
|
Wind warranty-minimum ____ miles per hour | Yes, depends on location | |
For a look at how Ce·DUR Shakes meet the above requirements - click on 'Best Roof.' |
|||
