How often should you stain a cedar deck?

In Boise, plan on every two to three years for boards in full sun, with railing caps and stair treads checked yearly. Shaded areas can go longer. Watch for water that soaks in instead of beading and for color fading to gray; either means the finish has worn through. Follow the specific stain's re-coat guidance.

Which lasts longer, cedar or pressure-treated decking?

Neither has a fixed lifespan. Treated pine rated for ground contact handles soil exposure better, while cedar's heartwood resists decay and checks less. In practice, finish upkeep, airflow under the deck and fastener quality decide how long the boards last more than the species does.

Can cedar be used for deck posts and framing?

It can, but it is rarely the right call. Cedar is softer and costs more than treated lumber, and its decay resistance varies between heartwood and sapwood. Most decks use treated lumber for posts, beams and joists, with ground-contact rated lumber near soil, and put cedar where it shows: decking, railing and trim.

Does cedar dent or scratch easily?

Yes, compared with treated pine. Cedar is a soft wood, so chair legs, grills dragged across the boards and dog claws leave marks. Felt pads, a grill mat and lifting rather than dragging furniture help. Many owners accept the marks as part of the look once the deck weathers.

Can you paint pressure-treated or cedar decking?

You can, but paint on a walking surface tends to peel and needs scraping before every re-coat. Treated pine must be dry first. Cedar bleeds through paint unless it is primed, as Fixr notes. Penetrating stains are easier to maintain on deck boards; paint and solid stain work better on railings and fascia.

Why is my new pressure-treated deck cracking?

It is drying out. Treated lumber often arrives wet, and Boise's dry summer air pulls moisture out of the surface faster than the core, which opens checks along the grain. Small checks are normal and mostly cosmetic. A finish once the wood dries slows further checking, and wide splits near fasteners are worth watching.

Cedar vs Pressure-Treated Decking

How do cedar and pressure-treated pine compare?

Treated pine wins on price and toughness; cedar wins on looks and stability. Most Boise decks use treated lumber for the frame either way, so this choice is about the boards you walk on.

Cedar vs pressure-treated decking. Costs: 2026 market ranges plus dated third-party figures.
Factor	Pressure-treated pine	Western red cedar
Installed cost per sq ft (2026 market range)	$25–$40	$30–$48
Fixr (Jan 2023, national) / HomeBlue (Dec 2021, Boise)	$15–$25 / $17–$20	$19–$29 / $29–$32
Heat in direct sun	Cooler than composite	Cooler than composite; lighter-weight boards
UV and color	Grays fast without a pigmented finish	Weathers to silver-gray; holds a stain well
Stability	Prone to checking, cupping and twisting as it dries	More stable; checks and cups less
Hardness	Harder; resists dents	Softer; dents under furniture legs
Maintenance	Wash yearly; stain again every two to three summers	Wash yearly; oil or semi-transparent stain on the same rhythm
Lifespan	Depends on upkeep; rated for ground contact where treated for it	Depends on upkeep; decay resistance is in the heartwood
Fire	Combustible	Combustible
Best for	Budgets, framing, painted or solid-stained decks	Natural wood look and a flatter, calmer surface

When pressure-treated pine makes sense

Choose treated pine when price leads or the deck will take a beating. It is harder than cedar, widely stocked and the same material your frame is built from.

Budget-first builds, including larger decks where the per-foot savings add up.
Low decks and stairs near soil, where lumber rated for ground contact is the right call.
Decks you plan to paint or solid-stain to match the house, once the wood has dried.
High-traffic decks with heavy furniture, where cedar would dent.

The trade-off is movement. Treated pine often arrives wet from treatment and shrinks as it dries, and in Boise's summer air that happens quickly enough to open checks and cup boards in the first season. Choosing straight, well-graded boards and fastening them properly limits it. Costs by size are in the wood deck cost guide, and if the deck stays under 12 inches the Boise deck permit rules explain why it may not need a permit.

When cedar is worth the extra cost

Cedar is worth it when appearance and a flat, stable surface matter more than the lowest price. It is lighter, smells like cedar and takes a semi-transparent stain beautifully.

Front-facing or visible decks where the grain is part of the design.
Owners who will keep up a penetrating finish to hold the warm color.
Decks without heavy furniture traffic, since cedar is soft.
Builds where less cupping and checking justify the premium.

Cedar's decay resistance comes from the heartwood, so it is used for decking, railing and trim, not for posts set near soil. Fixr also notes that cedar bleeds through paint unless it is primed first, which matters if you plan a painted rail. Framing stays treated lumber. Our wood decks page covers new builds; if your frame is sound and only the boards are tired, re-decking in cedar is a deck resurfacing job.

How does Boise's dry climate treat each wood?

Both woods suffer more from drying and sun than from rot here. With 11.51 inches of rain and snowmelt a year, boards swing from wet after a storm to bone-dry within days, and every swing opens surface checks a little further. Treated pine shows it most; cedar's tighter, more stable structure checks less.

Winter adds freeze-thaw: 108 freezing nights in an average year, and water that settles into open checks freezes and widens them. Summer brings UV: Boise sits at 2,867 feet and averages about 55 days at 90°F or hotter, and sun breaks down the surface of unfinished wood into the familiar gray. Boise's code table even lists weathering as Severe; that rating is written for concrete and masonry, but it reflects the same climate.

Sun-damaged wood deck boards that are gray, cracked, cupped and splintering — Illustration: checking, cupping and graying are what Boise's sun and dry air do to unfinished wood.

How often should you stain a cedar or treated deck in Boise?

Plan on every two to three years for sun-facing boards, and sooner for steps and railing caps. Shaded sections can go longer. The schedule below is a starting point; the stain maker's label sets the specifics.

Finish schedule for a Boise wood deck
Task	Pressure-treated pine	Western red cedar
Wash and inspect	Every spring	Every spring
First finish	After the wood has dried enough to absorb water	Once the surface absorbs water; often sooner than treated pine
Re-coat, sun-facing boards	Every 2–3 years	Every 2–3 years to hold color
Railing caps and stair treads	Check yearly; often re-coated first	Check yearly; often re-coated first
Best window	Between the median last freeze (April 24) and first freeze (October 21), avoiding midday heat	Same window; follow the product's temperature limits

Penetrating semi-transparent stains are the usual choice on walking surfaces because they wear away instead of peeling. More pigment means more UV protection. The deck maintenance guide has the full routine.

Fasteners, hardware and fire

Treated lumber is corrosive to plain steel, so the IRC that Idaho adopts requires corrosion-resistant fasteners and connectors in preservative-treated wood, typically hot-dip galvanized or stainless steel. Stainless fasteners are commonly recommended for cedar as well, because the wood's natural extractives can react with plain or coated steel and leave dark stains around screw heads.

Both woods are combustible. In Boise's Foothills wildfire overlay, ask Boise Fire what applies to decking before choosing either; fire-retardant-treated lumber and rated composite or PVC boards are the usual alternatives. For the broader comparison with composite, see composite vs wood decking.

Frequently asked questions

How often should you stain a cedar deck?: In Boise, plan on every two to three years for boards in full sun, with railing caps and stair treads checked yearly. Shaded areas can go longer. Watch for water that soaks in instead of beading and for color fading to gray; either means the finish has worn through. Follow the specific stain's re-coat guidance.
Which lasts longer, cedar or pressure-treated decking?: Neither has a fixed lifespan. Treated pine rated for ground contact handles soil exposure better, while cedar's heartwood resists decay and checks less. In practice, finish upkeep, airflow under the deck and fastener quality decide how long the boards last more than the species does.
Can cedar be used for deck posts and framing?: It can, but it is rarely the right call. Cedar is softer and costs more than treated lumber, and its decay resistance varies between heartwood and sapwood. Most decks use treated lumber for posts, beams and joists, with ground-contact rated lumber near soil, and put cedar where it shows: decking, railing and trim.
Does cedar dent or scratch easily?: Yes, compared with treated pine. Cedar is a soft wood, so chair legs, grills dragged across the boards and dog claws leave marks. Felt pads, a grill mat and lifting rather than dragging furniture help. Many owners accept the marks as part of the look once the deck weathers.
Can you paint pressure-treated or cedar decking?: You can, but paint on a walking surface tends to peel and needs scraping before every re-coat. Treated pine must be dry first. Cedar bleeds through paint unless it is primed, as Fixr notes. Penetrating stains are easier to maintain on deck boards; paint and solid stain work better on railings and fascia.
Why is my new pressure-treated deck cracking?: It is drying out. Treated lumber often arrives wet, and Boise's dry summer air pulls moisture out of the surface faster than the core, which opens checks along the grain. Small checks are normal and mostly cosmetic. A finish once the wood dries slows further checking, and wide splits near fasteners are worth watching.

Sources

Last reviewed October 15, 2026.

Cedar vs pressure-treated decking: which wood suits Boise?