Cedar, Steel, and Salt Air: A Maker's Guide to Materials That Last

When we started building outdoor furniture in coastal Oregon, we made every rookie mistake — pine that warped, fasteners that rusted through in a single season, finishes that turned chalky after one summer of sun. Three years and a lot of replaced legs later, here's what's actually worth your time.

Cedar earns its reputation, but choose the cut

Western red cedar is naturally rot-resistant, but not all cedar is created equal. Look for tight-grain heartwood — the darker, reddish-brown center cuts — and avoid sapwood, the lighter, creamier edge. Heartwood has higher concentrations of natural oils and tannins that resist fungal growth. For planter boxes and raised beds where wood meets soil, this difference is the difference between a piece that lasts 15 years and one that lasts 3.

Hardware is where projects quietly fail

Skip zinc-coated screws for any outdoor build. They look fine for a season, then bloom orange streaks down your beautiful cedar. Use stainless steel (316 marine-grade if you're within a mile of saltwater, 304 otherwise) or silicon bronze. Yes, they cost more. They cost less than rebuilding.

Finish less, not more

Cedar greys gracefully on its own. If you want to preserve the warm tone, a penetrating oil finish (we use tung oil cut 50/50 with citrus solvent) holds up better than film finishes like varnish or polyurethane, which inevitably crack and peel under UV. Reapply every spring. It takes 20 minutes per piece.

Design for water, always

Water sitting on a horizontal surface is the single biggest enemy of outdoor wood. Build with a slight pitch on any flat top, leave drainage gaps in slats, and never let two surfaces meet flush where water can pool. Our planter boxes have a 1/4" gap between every floor board — looks intentional, drains in seconds.

None of this is glamorous, but it's the difference between a piece that becomes part of your family's outdoor life and one that's quietly falling apart by year three.