Nothing looks quite like a cedar roof. The texture, the warm color, the way it silvers with age. It is the roof of mountain lodges, coastal cottages, and high-end custom homes. It is also one of the most demanding roofs you can own.
This guide covers what cedar does well, what it asks of you, and how to decide if it fits your home and your tolerance for maintenance.
Cedar Shakes vs Cedar Shingles
The terms get mixed up, but they are different products.
Cedar shingles are sawn smooth on both faces. They are uniform, thinner, and give a neat, tailored look.
Cedar shakes are split, not sawn, at least on one face. They are thicker, rougher, and more rustic looking. Hand-split shakes are the most textured. Tapersawn shakes are a middle ground.
Shakes generally cost more and last longer because of their thickness. Shingles give a cleaner look for a bit less money.
Why Homeowners Choose Cedar
Unmatched natural beauty. Cedar has a warmth and texture that manufactured materials imitate but never quite match. It weathers to a silvery gray that many people love.
Natural insulation. Wood insulates better than asphalt or metal. A cedar roof can help keep the house a bit cooler in summer and warmer in winter.
A renewable material. Cedar is a natural product, and old cedar roofs can be recycled into mulch or other wood products instead of going to a landfill.
Good storm performance. Thick shakes stand up well to hail and wind when installed correctly.
Neighborhood character. In some areas, especially historic districts and coastal towns, cedar is simply what a house is supposed to wear.
The Honest Downsides
Maintenance is real and ongoing. This is the big one. A cedar roof needs regular attention: clearing debris, treating for moss and mildew, and replacing individual shakes as they crack or curl. Ignore it and the lifespan drops fast.
Fire classification matters. Wood roofing is combustible, and local codes or wildfire rules may limit where cedar can be used. The Cedar Shake & Shingle Bureau publishes information on pressure-impregnated fire-retardant cedar products, but the required fire classification depends on the tested roof assembly, product and local code. Do not assume that every treated cedar roof automatically meets the same rating—verify the exact product and assembly before ordering.
Moisture is the enemy. In damp, shaded climates, cedar grows moss and mildew. That is not just cosmetic. Growth holds moisture against the wood and speeds up decay.
Insects and woodpeckers. Wood is food and habitat. Carpenter ants, woodpeckers, and other pests can damage cedar roofs in some regions.
Cost. Cedar costs several times what asphalt shingles cost, both for material and for the skilled labor to install it.
How Much Does a Cedar Roof Cost?
Rough installed ranges for a typical home. Prices move with cedar availability, region, and roof complexity.
| Material | Rough cost per sq ft installed | Typical lifespan |
|---|---|---|
| Cedar shingles | $8 to $12 | 20 to 25 years |
| Cedar shakes | $10 to $15 | 25 to 35 years |
| Fire-treated cedar | Adds roughly $2 to $4 per sq ft | Similar, with retreatment |
A well-maintained cedar roof in a dry climate can outlast these ranges. A neglected one in a damp climate can fail much sooner. Maintenance is the variable that matters most.
Caring for a Cedar Roof
If you buy cedar, buy into the upkeep. Here is the routine:
- Keep it clear. Remove leaves, needles, and branches at least twice a year. Debris traps moisture.
- Treat for growth. Apply a moss and mildew treatment every few years, or as your contractor recommends for your climate.
- Mind the shade. Trim overhanging branches. Sunlight and airflow are cedar’s best friends.
- Replace damaged pieces promptly. One cracked shake lets water in. Individual replacement is normal and expected.
- Consider preservative treatments. Some homeowners apply water-repellent preservatives every several years to slow weathering.
Budget a few hundred dollars a year for routine care, plus occasional repair visits.
Fire Ratings and Local Codes
Fire classification is determined by the tested product and roof assembly, not simply by whether the roof is “cedar.” CSSB identifies pressure-impregnated fire-retardant products such as Certi-Guard®, while local building and wildfire requirements determine what classification is acceptable for a specific project. Verify both the product documentation and the local code before purchase.
Before you commit, call your local building department. Ask what fire rating is required and whether wood roofing is restricted in your area. This one phone call can save you from buying a roof you cannot legally install.
Cedar in Different Climates
Cedar performs very differently depending on where you live.
Dry climates are cedar’s happy place. Sun and low humidity keep the wood dry, and a cedar roof in the Mountain West can last 35 years or more with basic care.
Humid climates are tougher. The Southeast and Pacific Northwest grow moss and mildew fast. Expect more frequent treatments and a shorter lifespan unless you stay on top of maintenance.
Cold climates are a mixed bag. Freeze-thaw cycles can crack aging shakes, but snow itself is not a problem. Ice dams are, so good attic insulation and ventilation matter as much as the roofing material.
Wildfire zones need treated cedar at minimum, and many areas will not allow wood roofs at all. Check local rules first, as noted above.
Match the material to your climate honestly. Cedar rewards the right setting and punishes the wrong one.
Frequently Asked Questions
How long does a cedar shake roof last?
With good maintenance, expect 25 to 35 years from shakes and 20 to 25 from shingles. Without maintenance, cut those numbers roughly in half.
Why does cedar turn gray?
Sunlight breaks down the wood’s surface lignin, and the roof silvers naturally. It is cosmetic, not damage. If you prefer the original brown, preservative stains can slow the graying.
Is a cedar roof worth it over architectural shingles?
For looks, many homeowners say yes. For pure value per year of service, architectural shingles usually win. Cedar is a choice you make with your eyes, not your calculator.
Can I walk on a cedar roof?
Avoid unnecessary roof walking. Cedar can be damaged by foot traffic, especially when it is aged, wet or brittle, and roof access creates a serious fall hazard. Inspections, cleaning and repairs are best handled by a qualified roofing professional familiar with wood shake and shingle systems.
