Cedar and beech are both commonly used woods in construction and woodworking, but they share almost nothing in common beyond availability. Cedar is a lightweight, aromatic softwood with natural rot resistance, while beech is a dense, heavy hardwood prized for its machining qualities and uniform texture. Choosing between them means deciding whether the project needs outdoor durability (cedar) or indoor hardness and finishing quality (beech). If you have existing cedar elements that have darkened with age, knowing how to restore and lighten darkened cedar paneling helps bring back original color before deciding on a refinishing approach.
Physical Properties and Hardness
The most dramatic difference between cedar and beech is density. Beech is roughly twice as heavy as most cedar species, which affects everything from load-bearing capacity to installation logistics.
| Property | Beech Wood | Cedar Wood |
|---|---|---|
| Janka hardness | 1,300 lbf (average) | 350 – 900 lbf (species dependent) |
| Average density | 45 lbs/ft³ | 20 – 32 lbs/ft³ |
| Classification | Hardwood (deciduous) | Softwood (coniferous) |
| Shrinkage (radial) | 5.1% | 2.1 – 3.5% |
| Shrinkage (tangential) | 7.8% | 4.5 – 6.5% |
Beech wood from the Fagus genus, primarily Fagus grandifolia (American beech) in the United States, ranks consistently at 1,300 lbf on the Janka scale. This makes it harder than black walnut, cherry, and most birch species. Cedar Janka values range from 350 lbf for Western red cedar up to 900 lbf for Eastern red cedar, which is botanically a juniper rather than a true cedar. When installing wood flooring materials, beech provides the dent resistance needed for high-traffic areas, while cedar is too soft for flooring except in decorative or low-traffic applications.
Weight and Handling on the Job Site
A 12-foot length of 2×6 beech weighs approximately 30 to 35 pounds, while the same piece in Western red cedar weighs about 12 to 15 pounds. This weight difference matters for overhead work like ceiling paneling, roof sheathing, and exterior soffits. Cedar’s light weight reduces labor fatigue and trims installation time, while beech’s heavier mass requires more structural support and lifting equipment for large panels. A single worker can carry multiple cedar boards in one trip, whereas beech often requires two-person handling.
Structural Load Implications
Because beech is dense and heavy, it adds significant dead load to a structure. Floor joist spacing must account for this weight in beech-heavy installations. Cedar adds minimal dead load, which is one reason it is preferred for roof shingles, siding, and decorative ceiling treatments where framing is already in place. A cedar shake roof weighs about half what an equivalent asphalt shingle roof weighs, reducing the need for structural reinforcement.
Natural Durability and Weather Resistance
Durability is where these two woods diverge most sharply. Cedar contains natural preservative oils that make it one of the most weather-resistant softwoods available. Beech has no natural resistance and is classified as perishable.
| Property | Beech | Cedar |
|---|---|---|
| Rot resistance | Perishable (poor) | Moderate to high |
| Insect resistance | Susceptible | Naturally resistant |
| Outdoor lifespan (untreated) | 1 – 3 years in ground contact | 15 – 25 years above ground |
| Chemical treatment required | Yes, for any exterior exposure | Optional |
When comparing wood deck options, cedar’s natural durability makes it a strong candidate for outdoor projects without chemical preservatives. Western red cedar’s heartwood contains thujaplicins that inhibit fungal growth and deter insects. Eastern red cedar produces similar compounds and adds a strong aromatic scent that repels moths and other pests. Beech requires complete protection from moisture, which limits it to interior applications unless pressure-treated or encapsulated. Even with treatment, beech is not recommended for ground-contact applications.
Moisture Behavior
Beech has high shrinkage rates and tends to split and check during drying if not carefully controlled. It moves significantly with seasonal humidity changes, roughly twice as much as cedar in the radial direction. Cedar has low shrinkage and remains dimensionally stable across changing conditions, which is why it is preferred for exterior siding and trim where gaps would compromise weather tightness. Cedar’s stability also reduces the need for expansion gaps in siding installations.
Workability and Fabrication
Both woods are considered easy to work with, but for different reasons. Beech responds well to both hand and power tools but requires sharp blades due to its density. Cedar cuts easily with any tool but demands care to avoid denting and marring soft surfaces during fabrication.
- Beech: Excellent for steam bending, turning on a lathe, and detailed carving. Holds threads well for screw joints. Tends to split near edges when nailed without predrilling. Produces smooth surfaces with minimal sanding.
- Cedar: Easy to saw, plane, and rout with minimal blade wear. Grain can be coarse and may tear out during planing. Soft surface dents easily under clamps or during handling. Takes nails without predrilling in most cases.
If you are installing ceramic tile over a wood deck, the substrate wood’s stability is a key factor. Cedar’s dimensional stability makes it a reliable substrate for tile installations where movement could cause cracking. Beech’s tendency to move with humidity changes makes it less suitable as a tile substrate without extensive engineering and moisture barrier systems.
Tool Wear Comparison
Beech’s density wears cutting edges faster than most other hardwoods. A set of planer blades that lasts for 500 board-feet of pine may need sharpening after 150 board-feet of beech. Cedar is gentle on blades, and planer knives can run thousands of board-feet between sharpenings. For production shops running both species, scheduling machining runs from softest to hardest wood extends blade life between changes.
Appearance, Grain, and Finishing Characteristics
Neither cedar nor beech is considered a highly decorative wood, but both produce acceptable results with proper finishing.
Beech is a pale yellow to light brown wood with a straight grain and medium to coarse texture. Quarter-sawn beech shows a characteristic flecked figure caused by medullary rays. The wood takes stain well and can be finished to resemble darker, more expensive species like cherry or walnut. This versatility makes beech a common choice for affordable furniture that mimics high-end looks without the premium price tag.
Cedar heartwood ranges from reddish to pinkish-brown in Western red cedar to reddish or violet-brown in Eastern red cedar. The grain is straight and coarse in Western red cedar, and straight but frequently knotty in Eastern red cedar. Clear, large boards of Eastern red cedar are rare due to the species’ growth habit. When repairing historic wood windows, beech’s uniform texture and good paint adhesion make it a practical choice for period-appropriate replacements where the window will be painted.
Paint and Stain Performance
Beech accepts paint and stain more evenly than most hardwoods. Its closed grain requires a primer before painting, but the finish holds well over time. Cedar requires special attention to finishing because natural oils can bleed through paint layers. Oil-based primers or dewaxing sealers are necessary before topcoats when painting cedar. Cedar accepts transparent stains and clear finishes well, which is the preferred approach for showcasing its natural color and grain pattern.
Best Applications by Project Type
Matching wood properties to project requirements produces better results than choosing based on price or availability alone.
| Application | Recommended Choice | Reason |
|---|---|---|
| Outdoor siding | Cedar | Natural rot resistance, weathers well without paint |
| Interior flooring | Beech | Hard surface resists denting and wear from traffic |
| Furniture frames | Beech | Strong, holds joinery tight, steam-bends into complex shapes |
| Decking and railings | Cedar | Withstands moisture and insect attack for decades |
| Cabinetry | Beech | Uniform stain results, holds hinges and slides securely |
| Closet liners | Cedar | Aromatic oils deter moths, lasts for years without treatment |
| Roof shingles | Cedar | Light weight, splits cleanly, resists weather exposure |
Beech excels in indoor applications where hardness, strength, and finishing quality are priorities. Its steam-bending capability makes it the traditional choice for bentwood chairs, curved cabinet doors, and architectural millwork. Cedar excels outdoors and in enclosed spaces where its natural oils provide pest protection. When restoring exterior wood siding, cedar is easier to work with and responds better to refinishing than hardwood alternatives because of its stability and natural weather resistance.
Cost Comparison
Both woods sit at moderate price points relative to premium hardwoods like walnut or teak. Clear-grade cedar commands a premium due to limited supply of knot-free boards, often $6 to $10 per board-foot. Beech is more affordable and more consistent in price across grades, typically $4 to $7 per board-foot. Regional availability matters: beech is abundant in the eastern United States, while Western red cedar is more economical in the Pacific Northwest. Wood construction industry standards provide grading specifications for both species, helping builders select the appropriate grade and avoid paying for appearance characteristics that the application does not require.
The choice between cedar and beech comes down to the application environment. Cedar handles outdoor exposure with minimal maintenance and provides natural pest resistance. Beech delivers indoor durability, excellent finishing, and the ability to steam-bend into complex shapes. Neither wood is universally better. Selecting based on where the wood will live and what it needs to withstand gives the best long-term results.