Redwood Slabs: Guide to California Redwood & Old-Growth Salvage

Botanical Name Sequoia sempervirens

Category Softwood

Janka Hardness 420 lbf

Color Deep reddish-brown heartwood, cream-colored sapwood; old-growth is darker

Grain Straight, even grain with very fine texture; old-growth shows tight rings

Workability Easy to work — soft, light, machines cleanly

Price Range $8–$30+ per board foot (old-growth salvage commands premium)

Where Redwood Grows

Coast redwood has the most restricted native range of any major slab species — a narrow fog belt along the Pacific coast from the extreme southwestern corner of Oregon to the Big Sur region of central California. This strip is rarely more than 30 miles wide and never extends beyond the reach of summer fog, which provides critical moisture during California's dry season. The tallest and largest groves grow in Humboldt and Del Norte counties in far northern California.

Inland, the species is absent — it requires the mild, humid conditions that only the coastal fog zone provides. However, coast redwood has been planted extensively as an ornamental and landscape tree far outside its native fog belt — throughout coastal and inland California, the Willamette Valley and western Oregon, western Washington's Puget Sound area, and even parts of the southeastern U.S. where humidity substitutes for fog.

In the Bay Area, Sacramento, and Portland metro areas, landscape redwood removals occasionally produce slab-grade logs from trees that have reached 2-3 foot diameters in 80-100 years. This urban supply is tiny compared to the native range harvest — most slab-grade redwood still comes from salvage (old-growth logs recovered from rivers, demolition, or mill remnants) or second-growth timber from the Humboldt, Del Norte, and Mendocino county heartland.

Range data from USGS (E.L. Little Jr., 1971-1981). Shows approximate historical native range. Actual current distribution may differ.

County presence data from USDA PLANTS Database. Shows counties where species has been documented, including planted and naturalized populations.

Redwood: California's Iconic Slab Wood

Coast redwood produces some of the most striking slabs available — deep reddish-brown heartwood, natural rot resistance, and the potential for truly massive dimensions. Old-growth redwood stumps and salvage logs can yield slabs 4 feet wide or more.

Redwood slabs carry a unique character: the combination of rich color, tight grain (especially in old-growth), and natural durability makes them equally suited for outdoor furniture and indoor showpieces.

Old-Growth vs. Second-Growth

Understanding the difference is critical when buying redwood slabs:

Old-Growth Redwood

Harvested before modern logging restrictions (pre-1970s) or from salvage operations
Extremely tight growth rings (40+ rings per inch)
Dense, deeply colored heartwood
Superior rot resistance
Available primarily as salvage from stumps, fallen logs, and reclaimed structures
Premium pricing reflects scarcity

Second-Growth Redwood

Trees planted or naturally regenerated after logging
Wider growth rings, lighter color
Less dense and less rot-resistant than old-growth
More affordable and more available
Still an excellent outdoor wood

Most redwood slabs on the market today are either second-growth or old-growth salvage. Salvage operations recover wood from stumps and fallen trees in areas that were logged decades ago. This material has old-growth quality without impacting living forests.

Why Redwood Works for Slabs

Natural Durability

Redwood heartwood contains tannins that resist rot, insects, and fungal decay. This makes it one of the best choices for outdoor slab furniture — second only to certain cedar species for weather resistance.

Dimensional Stability

Despite being a softwood, redwood is remarkably stable. It shrinks and swells less than most species in response to humidity changes, reducing the risk of warping and cracking in wide slabs. At 420 lbf Janka, redwood is comparable to butternut and basswood — slightly harder than western red cedar but still firmly in the softwood range. For context, a dropped coffee mug or a chair leg dragged across the surface will leave a mark, so embrace the patina or protect high-traffic areas with a hardwearing finish.

Color and Warmth

The deep red-brown color of redwood is unique among North American species. No stain needed — a clear finish shows off the natural beauty.

Sizing and Pricing

Redwood produces wide slabs, especially from old-growth salvage:

Source	Width Range	Typical Price per BF
Second-growth	12–24"	$8–$14
Second-growth (wide)	24–36"	$12–$20
Old-growth salvage	24–48"	$18–$30
Old-growth salvage (premium)	48"+	$25–$40+

Burl redwood — swirling, figured wood from root masses — is highly prized and can exceed $50 per board foot for exceptional pieces.

Best Uses for Redwood Slabs

Outdoor Tables and Benches

Redwood's natural durability makes it a top choice for patio and garden furniture. It handles sun, rain, and temperature swings better than most alternatives.

Bar Tops

The rich color and width potential of redwood create stunning bar surfaces. A single old-growth slab can span an entire bar without seams.

Mantels and Feature Walls

Redwood's warm color and wide availability of thick slabs make it ideal for fireplace mantels and accent installations.

Tips for Buying Redwood Slabs

Ask about provenance — reputable sellers can tell you whether stock is old-growth salvage or second-growth
Check for heartwood percentage — sapwood is cream-colored and has no rot resistance
Inspect for embedded debris — salvage logs may contain old metal, rocks, or other foreign objects
Consider burl — redwood burl is visually stunning but structurally weaker; best for wall art and decorative pieces
Factor in softness — at 420 lbf Janka, redwood dents easily; for indoor surfaces, consider a hardwearing finish or accept patina over time