Cedar shake roofs are a traditional American roofing option known for their natural beauty, warmth, and lasting performance when properly installed and maintained. Made from cedar wood, these roofs feature thick, textured shakes that create a distinctive, rustic look. Over time, cedar can patina into a silvery gray, adding character to homes across diverse climates. This guide explains what a cedar shake roof is, why homeowners choose it, and how to care for and maintain this classic roofing choice in the United States.
What Is A Cedar Shake Roof
A cedar shake roof uses cedar wood shakes as roofing elements. Shakes are thick, hand-split or machine-cut pieces that overlap to shed water and create a textured surface. They differ from cedar shingles, which are thinner and more uniform. Western red cedar is the most common species in the United States, valued for natural oils that resist decay and a warm tone that ages to an aged gray. Shakes are typically installed on slopes of at least 4:12, with proper ventilation and a quality underlayment to prevent moisture-related rot.
Benefits Of Cedar Shake Roofs
A cedar shake roof offers several compelling advantages that contribute to curb appeal and performance. The following key benefits help justify the investment:
- Natural beauty and curb appeal: The textured profile and warm color palette enhance architectural character and can boost resale value.
- Insulation and sound dampening: Thick shakes provide commendable insulation, helping regulate indoor temperatures and reduce exterior noise.
- Durability with proper care: When installed correctly and maintained, cedar shakes resist wind uplift and provide long service life.
- Breathability and moisture management: Cedar’s natural oils and porous structure allow vapor to escape, reducing moisture buildup when combined with ventilation and underlayment.
- Eco-friendly material: Cedar is a renewable resource, and some mills offer responsibly harvested options and low-impact finishes.
Limitations And Considerations
Cedar shake roofs require thoughtful design and ongoing upkeep. They have tradeoffs that homeowners should weigh against benefits:
- Maintenance demands: Regular inspections, moss or algae control, and resealing or staining are often needed to preserve performance and appearance.
- Higher upfront cost: Material and installation costs exceed many alternatives, though lifespans can offset long-term expenses when well maintained.
- Rot and insects risk: Moisture intrusion or poor ventilation can lead to rot; ongoing care mitigates risk.
- Fire considerations: Cedar is combustible; local codes may require fire-retardant treatments or upgrades to achieve desired fire resistance.
- Climate sensitivity: Humid or coastal environments demand more frequent maintenance due to moss and warp risk.
Materials And Styles
- Shakes vs shingles: Shakes are thicker and more irregular, offering a rugged texture; shingles are thinner and smoother for a more uniform look.
- Wood species: Western red cedar is popular for its color, rot resistance, and aroma; Alaska yellow cedar and other cedars are used in niche applications.
- Thickness and profile: Shake thickness varies, typically ranging from about 3/8 inch to 1/2 inch, influencing insulation and water shedding.
- Finishes: Finish options include natural, stain, or clear sealants to control color aging and UV exposure; many homeowners avoid paint on shakes to preserve the wood’s natural character.
Installation And Maintenance
Proper installation and ongoing maintenance are critical for cedar shake performance. Key considerations include:
- Underlayment and ventilation: A quality roof underlayment paired with adequate attic ventilation helps dry any moisture and extends shake life.
- Roof pitch and framing: A minimum slope is often required to ensure effective water shedding and to minimize standing moisture.
- Fasteners and spacing: Correct fastener type and spacing prevent lift and water intrusion during high winds and freeze-thaw cycles.
- Cleaning and moss control: Regular removal of debris and moss reduces moisture retention and keeps shingles dry.
- Finishes and resealing: Periodic staining or sealant application (every 3–5 years, depending on climate and product) helps maintain color and water resistance.
Cost, Lifespan, And Value
| Roof Type | Installed Cost Per Sq Ft | Lifespan (Years) | Maintenance | Fire Rating |
|---|---|---|---|---|
| Cedar Shake | $6–$12 | 30–50 | Moderate | Class A with proper underlayment and treatment |
| Asphalt Shingle | $2–$5 | 15–30 | Low to Moderate | Class A |
| Metal | $5–$15 | 40–70 | Low | Class A |
Fire Safety And Building Codes
Fire risk is a common consideration with cedar shakes. Without treatment, shakes are combustible, and some jurisdictions require additional measures to meet Class A fire ratings. Options include applying fire-retardant treatments, using a self-sealing or asphalt-saturated underlayment, or pairing shakes with fire-resistant barrier materials. Homeowners should verify local codes, HOA requirements, and manufacturer specifications before selection and installation. Insurance premiums may reflect fire risk, so documenting upgrades and compliance can be beneficial.
Choosing A Cedar Shake Roof Contractor
Finding a qualified contractor is essential for optimal performance. Best practices include:
- Licensing and insurance: Confirm current credentials and adequate coverage for workers’ compensation and liability.
- Experience with cedar shakes: Prior projects on similar roofs demonstrate competence with installation and maintenance.
- References and portfolio: Request recent references and review completed work for alignment with your aesthetic goals.
- Manufacturer-approved methods: Ensure the contractor follows specific installation requirements and uses recommended underlayment and fasteners.
- Warranties: Seek material and labor warranties that cover installation and product defects for a minimum of several years.
Maintenance Schedule At A Glance
A practical maintenance routine can extend the life of a cedar shake roof. The following schedule provides a baseline for homeowners:
- Yearly: Inspect for loose shakes, loose fasteners, and surface damage; clear leaves, needles, and debris from valleys and gutters.
- Biannual: Check attic ventilation, underlayment condition, and signs of moisture leakage inside the home.
- Every 3–5 years: Apply stain or sealant as recommended by product labels and climate considerations; reseal exposed edges to maintain water resistance.
- After severe weather: Examine for broken or warped shakes and promptly replace damaged pieces to prevent leaks.
Frequently Asked Questions
Are cedar shake roofs fireproof?
Not inherently. Cedar shakes are combustible, but they can achieve high fire resistance with proper underlayment, fire-retardant treatment, and adherence to local codes. Some areas may require additional protective measures for Class A ratings.
Do cedar shake roofs require special maintenance?
Yes. Regular inspections, moss control, cleaning, and periodic resealing or staining help preserve performance and appearance. The frequency depends on climate, shade, and exposure to moisture and sunlight.
How long does a cedar shake roof typically last?
With proper installation and maintenance, cedar shake roofs commonly last 30–50 years, and some premium installations may exceed this range in favorable conditions.
Can cedar shakes be painted?
Painting cedar shakes is uncommon because it obscures the natural character and oils; most homeowners prefer staining or clear sealants to preserve the wood’s integrity and allow aging to occur naturally.