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Unbiased Advice ~ Independent Oversight
Residential Roof Consultant ~ Unbiased Advice ~ Independent Oversight
Copyright © 2008-2012 Seattle Roof Advisor, Inc.™ All Rights Reserved.
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Cedar
Cedar is perhaps the oldest roofing material in continuous use and is still a viable option for roof replacement today. The interwoven felt used in cedar shake installation creates a durable roof system that is designed to “recycle” moisture beneath the material back out onto the roof surface. Cedar is sold in numerous varieties, both raw and treated, and has a realistic life expectancy of 15 to 35 years depending on the system chosen. Available options are:
*Treated cedar can be installed over solid plywood decking; however, the life expectancy will be shortened by 15% to 20%.
Below are links to several manufacturers’ sites. Remember that manufacturers’ web sites are designed to promote their products and will generally provide you with only positive product information.
You can count on Seattle Roof Advisor to provide unbiased advice.
Pros
- Attractive appearance
- No plywood re-sheathing costs
- Interwoven felt roof system installation methodology for shakes
Cons
- Maintenance
- Cost
- Quality cedar availability
- Moss growth
- Poor walkability when wet
- Flammability
About Us
The Process
ROOFING PRODUCTS
Pitched Roofs
► Cedar
► Composition
► Metal
► Slate / Tile
► Synthetic
Low-Pitch / Flat Roofs
Contact Us
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Cedar Style |
Length x Butt Thickness |
Width |
Exposure |
Underlayment |
Average Life |
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Medium Shakes, Raw |
24” x 1/2” |
Various |
9-1/2” - 10-1/2” |
30# interwoven shake liner |
15 - 17 |
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Medium Shakes, Treated* |
Same as raw with CCA pressure treatment |
23 - 25 | |||
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Heavy Shakes, Raw |
24” x 3/4” |
Various |
Same as medium shakes |
20 - 22 | |
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Heavy Shakes, Treated* |
Same as raw with CCA pressure treatment |
33 - 35 | |||
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Taper-Sawn, Raw |
24” x 5/8” |
Various |
10” |
30# interwoven shake liner |
12 - 15 |
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Taper-Sawn, Treated* |
Same as raw with CCA pressure treatment |
18 - 20 | |||
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Wood Shingles, Raw |
18” x 1/4” |
Various |
5” |
None |
12 - 15 |
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Wood Shingles, Treated* |
Same as raw with CCA pressure treatment |
18 - 20 | |||