Cedar Decking vs. Pressure-Treated Lumber

Quick Comparison

Criterion	Cedar Decking	Pressure-Treated Lumber
Natural Appearance	Rich warm reddish-brown; attractive grain; premium aesthetic	Greenish-brown when new; browns/grays as it weathers
Cost (5/4×6 deck boards)	$2.50–$6.00/LF — 2–3× more than PT	$0.80–$2.50/LF — most economical natural wood option
Natural Rot Resistance	Naturally rot-resistant (heartwood) — no chemical treatment needed	Chemically treated for rot resistance — varies by UC rating
Weight	23 lbs/cu ft — lightweight and easy to handle	30–35 lbs/cu ft (wet/green) — heavier, especially when freshly treated
Fastener Requirements	Stainless steel preferred; HDG acceptable	Must use HDG, stainless, or ACQ-approved coated fasteners — standard zinc erodes
Workability	Excellent — machines, sands, and paints cleanly	Good — machine normally; wet boards can be harder to cut cleanly

Our Recommendation

Choose cedar for visible deck boards when appearance is a priority and budget allows. Cedar's warm color, smooth finish, and splinter resistance make it the preferred upgrade from PT for homeowners seeking a natural wood look. It's also lighter and easier to handle.

Choose pressure-treated lumber for all structural framing (always), budget-driven projects, or applications where the boards are less visible. Many contractors use PT framing with cedar surface boards — a cost-effective hybrid that maximizes appearance where it matters most.

Detailed Analysis

The Smart Hybrid Approach

The most common professional approach is to use pressure-treated lumber for the entire structural frame (posts, beams, joists, ledger) and cedar for the visible deck boards and railing components. This delivers the durability and ground-contact performance of PT where it's needed, while showcasing cedar's natural beauty on the walking surface.