Alaskan Yellow Cedar
A highly durable softwood valued for its stability, workability, and long-term performance in demanding environments.
Alaskan Yellow Cedar is a dense, fine-grained species known for exceptional durability, dimensional stability, and natural resistance to decay. Its performance in demanding exterior environments has made it a trusted choice for applications where long service life is essential, while select interior uses benefit from its clean appearance and workability.
At Oregon-Canadian, Alaskan Yellow Cedar is carefully selected and remanufactured for projects where long-term performance matters. Our disciplined approach supports clean machining, reliable quality, and consistency throughout production runs.
Available in standard architectural patterns and custom profiles for high-performance applications.
Species Snapshot
Common Name: Alaskan Yellow Cedar (often referred to as Yellow Cedar)
Scientific Name: Cupressus nootkatensis (also referenced in as Callitropsis nootkatensis )
Typical Appearance
- Pale yellow to light golden tones, aging to a soft silvery gray when exposed
- Fine, even texture with a subtle, uniform grain
- More uniform color variation compared to Western Red Cedar
Grain Characteristics
- Straight, tight grain with fine texture
- Naturally dense for a cedar species
- Supports clean machining and crisp profile definition
Primary Uses
- Exterior cladding and siding in demanding environments
- Soffits, overhangs, and exposed architectural elements
- Coastal, marine, or high-moisture conditions
- Select interior applications where durability and stability are priorities
Performance Highlights
- Exceptional natural resistance to decay
- High dimensional stability
Grades & Grain Structure
Industry Grading Standards
Alaskan Yellow Cedar lumber grades are established using recognized softwood grading rules published by:
- West Coast Lumber Inspection Bureau (WCLIB)
- Western Wood Products Association (WWPA)
These standards define allowable characteristics such as:
- Knot size and distribution
- Grain deviation and slope
- Wane, checks, splits and other natural features
- Appearance and structural classifications
These rules establish minimum grade requirements. OCFP selection, remanufacturing, and appearance standards often exceed those minimums.
Appearance Grades
Clear Grades
- Minimal knots and visual interruptions
- Fine, uniform texture and color
Commonly specified for:
- Exterior cladding and siding
- Soffits and overhangs
- High-visibility architectural applications
Knotty/Character Grades
- Visible knots and natural variations
- More expressive appearance
Often chosen for:
- Applications where visual character is acceptable, and performance requirements remain high
Grain Structure
Vertical Grain (VG/CVG)
- Tighter, uniform grain orientation
- Excellent dimensional stability
Often preferred for:
- High-exposure applications
- Projects where movement must be minimized
Flat Grain
- Broader grain pattern with slightly more visual variation
- Performs well due to AYC’s natural stability
Often selected for:
- Applications where appearance variation is acceptable
How OCFP Approaches AYC Selection
At Oregon-Canadian, Alaskan Yellow Cedar is selected with an emphasis on:
- Grain orientation appropriate to exposure
- Consistency across boards and runs
- Suitability for long-term performance in demanding conditions
Profiles, Patterns and Product Forms
Alaskan Yellow Cedar is frequently specified for demanding exterior use and supplied in forms suited for applications where long service life and dimensional control are critical.
Featured Profiles & Patterns
Available in various Tongue & Groove (T&G) or Shiplap profile options. Core offerings are available across species. Additional profiles are available upon request.
Most Common Sizes
Most Common Profiles
1x4 - 1x12
V-Groove (V-Joint, WP4, WC-200)
2x2 - 2x12
Nickel Gap / Channel
3x3 - 3x12
Center Match
4x6 - 4x12
Bead Board
Most Common Sizes
1x4 - 1x12
2x2 - 2x12
3x3 - 3x12
4x6 - 4x12
Most Common Profiles
V-Groove (V-Joint, WP4, WC-200)
Nickel Gap / Channel
Center Match
Bead Board
Standard Forms:
- Roughsawn
- S2S (Surfaced Two Sides)
- S4S (Surfaced Four Sides)
- Precision-Milled Custom Patterns
Custom Milling Capabilities
Alaskan Yellow Cedar’s density and stability make it well suited for:
- Exterior siding, soffits and rainscreen assemblies
- Profile matching for additions or phased projects
- Interior projects where warmth and natural variation are desired
At OCFP, custom milling is handled with discipline and care — supporting predictable installation and long-term performance.
Availability Note
- Availability may vary by grade, grain orientation, and profile
- Sales coordination is recommended for project-specific needs
Performance & Technical Characteristics
Technical Overview
Characteristic
Alaskan Yellow Cedar
Strength-to-weight
Moderate
Dimensional stability
Excellent
Hardness (Janka)
~580 lbf (moderate)
Natural decay resistance
Exceptional
Workability
Machines cleanly; crisp detail
Finish acceptance
Accepts stains and coatings well
Moisture condition
Kiln-Dried (KD)
Kiln-Dried (KD) Moisture Content
Alaskan Yellow Cedar is commonly supplied kiln-dried to support stability and long-term exterior performance.
- KD (General): ~12-15% MC
- Exterior, high-exposure applications: moisture targets should align with detailing and
exposure conditions - Interior applications: often targeted toward the lower end of the KD range
Durability & Exterior Performance
- Naturally resistant to decay and insect activity
- Performs exceptionally well in wet, cold, coastal, or otherwise demanding environments
- Frequently specified where replacement or maintenance access is limited
While AYC offers outstanding durability, proper detailing, drainage, and finish selection still matter.
Dimensional Stability & Grain Orientation
- Dense structure contributes to excellent stability
- Vertical Grain (VG/CVG):
- Maximizes stability and uniform movement
- Preferred for long runs and exposed assemblies
- Flat Grain:
- Slightly more visual variation
- Still performs well due to inherent stability
Interior Performance
- Suitable for select interior applications where durability and precision are priorities
- Fine texture supports clean finishes and crisp profiles
- Performs predictably in controlled interior environments
Machining & Installation Performance
- Machines cleanly with sharp tooling
- Holds fasteners and adhesives reliably
- Well suited for precision remanufacturing and tight tolerances
Environmental & Specification Consideration
- Coordination with the supplier and installer is recommended for project-specific applications and requirements.
- Performance influenced by:
- Grain orientation
- Moisture content
- Exposure conditions
- Finish and maintenance strategy
Finishing Guidance
Alaskan Yellow Cedar performs well with a range of finish approaches and is often selected for applications where durability is prioritized over frequent maintenance.
Exterior Applications
- Can be left unfinished to weather naturally over time
- Often finished with penetrating stains or protective coatings to:
- Moderate color change
- Reduce surface checking
- Establish a predictable maintenance cycle
Finish performance depends on:
- Exposure severity (coastal, wet, cold, UV)
- Orientation and detailing
- Maintenance expectations
Interior Applications
- Clear or lightly pigmented finishes highlight AYC’s fine texture
- Performs well in controlled environments with minimal upkeep
Weathering & Appearance Over Time
- Unfinished exterior AYC will weather gradually and evenly
- Color will shift from pale yellow to a soft silvery-gray over time
- Weathering is predictable and often acceptable—even desirable—in performance-driven designs
Installation Considerations
Acclimation
- Allow material to acclimate to jobsite conditions prior to installation
- Proper acclimation supports dimensional stability and finish performance
Fasteners
- Use corrosion-resistant fasteners appropriate for high-exposure environments
- Fastener selection should align with exposure conditions and finish system
Detailing
- Proper spacing, ventilation, and drainage are critical
- Rainscreen and back-vented assemblies are commonly used in high-performance exterior applications
Maintenance Expectations
- Regular inspection supports long-term performance, especially in harsh environments
- Maintenance frequency depends on:
- Finish choice
- Exposure severity
- Desired appearance over time
Sustainability, Sourcing & Compliance
Responsible Sourcing
Alaskan Yellow Cedar is a slow-growing softwood species native to the Pacific Northwest and Alaska. When responsibly managed, Alaskan Yellow Cedar forests support long-term material availability and thoughtful material use in demanding environments.
At OCFP, sourcing decisions are guided by:
- Long-standing supplier relationships
- Careful selection for performance-critical applications
- Respect for the forests and communities we source from
Stewardship & Material Responsibility
Wood is a natural, renewable material that—when used thoughtfully—supports durable, long-lasting construction.
Alaskan Yellow Cedar is often chosen for:
- Long-term durability in demanding environments
- Dimensional stability in exposed applications
- Compatibility with designs that prioritize longevity and low maintenance
Certification & Chain of Custody
Certification and chain of custody documentation may be available based on supplier and project requirements.
Please coordinate with our team to confirm availability for specific orders or project specifications.
Regulatory & Specification Considerations
- Alaskan Yellow Cedar grading follows recognized industry standards
- High-exposure applications should account for detailing, drainage, and finish strategy
- Export, treatment, or project-specific requirements should be coordinated with sales in advance
Project & Inspiration Gallery
Alaskan Yellow Cedar is frequently specified for projects exposed to moisture, temperature swings, and limited access for maintenance. Its fine grain and exceptional durability support exterior assemblies designed to endure—often in coastal, alpine, or high-wear conditions.
Chosen for environments where replacement is costly and performance must be predictable, Alaskan Yellow Cedar supports exterior designs built for the long term. Its ability to weather steadily and remain dimensionally stable makes it a trusted material for projects that demand confidence over time.