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TimberTool©

Wood Species Science & AI Diagnostics

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TimberTool© Wood Analysis & Science

Explore American Deck Wood Species

Every decking timber reacts uniquely to humidity, thermal expansion, UV breakdown, and mold spores. Compare density, Janka hardness, natural rot decay resistance, and finish requirements before building or restoring your deck.

Category:
Pressure-Treated Southern Yellow Pine
Softwood
690 Janka

Pressure-Treated Southern Yellow Pine

Pinus taeda / Pinus palustris

The most popular decking wood in the United States, representing over 75% of real wood decks. Treated with copper-based preservatives (ACQ/MCA) to resist decay and termites.

Rot Decay

Moderate

Lifespan

15 - 20 Years

Est. Cost

$3.00 - $6.00

Western Red Cedar
Softwood
350 Janka

Western Red Cedar

Thuja plicata

Renowned Pacific Northwest timber cherished for its rich cinnamon-red hues, aromatic natural oils (thujaplicins), and natural dimensional stability with minimal warping.

Rot Decay

High

Lifespan

20 - 25 Years

Est. Cost

$7.00 - $12.00

California Redwood
Softwood
450 Janka

California Redwood

Sequoia sempervirens

A prized West Coast hardwood-like softwood with legendary beauty, natural pitch-free resin, and outstanding resistance to fire and weathering when heartwood grades are selected.

Rot Decay

High

Lifespan

25 - 30+ Years

Est. Cost

$9.00 - $15.00

Ipé (Brazilian Walnut)
Hardwood
3680 Janka

Ipé (Brazilian Walnut)

Handroanthus spp.

An ultra-dense South American hardwood as hard as iron. Has a Class A fire rating (same as concrete/steel) and naturally resists fire, rot, marine borers, and heavy foot traffic.

Rot Decay

Exceptional

Lifespan

40 - 75+ Years

Est. Cost

$14.00 - $22.00

Douglas Fir
Softwood
710 Janka

Douglas Fir

Pseudotsuga menziesii

A classic American structural lumber with superior strength-to-weight ratio. Widely used for deck joists, beams, and covered porch flooring throughout the Pacific Northwest and Mountain regions.

Rot Decay

Moderate

Lifespan

10 - 15 Years (Unprotected) / 20+ Years (Sealed)

Est. Cost

$4.00 - $7.00

Thermally Modified Ash / Pine
Modified Wood
1100 Janka

Thermally Modified Ash / Pine

Fraxinus excelsior / Pinus sylvestris

Real wood baked in high-temperature kilns (>400°F) in an oxygen-deprived steam environment. Cooking bakes out the sugars that fungi eat, making the wood permanently stable and decay-proof without chemicals.

Rot Decay

High

Lifespan

25 - 30 Years

Est. Cost

$10.00 - $16.00

Capped Composite / PVC (Comparative)
Composite / PVC
1800 Janka

Capped Composite / PVC (Comparative)

Polymer Co-Extruded Wood Blend

Engineered decking made from recycled wood flour and polymers enclosed in a durable protective shell. Provided for direct maintenance comparison against natural wood options.

Rot Decay

Exceptional

Lifespan

25 - 50 Years

Est. Cost

$12.00 - $20.00