Wood decks in Utah live two lives. There's the one a stained, sealed, well-maintained deck has, where boards turn the right color of weathered cedar over 15 to 20 years and the surface stays sound through three or four full refinishing cycles. And there's the life a neglected deck has, where boards gray out unevenly by year four, develop the kind of micro-cracking that turns into rot by year eight, and need wholesale replacement by year twelve.
The difference between those two paths isn't the wood. It isn't the build. It's whether the deck gets cleaned and re-finished on the schedule a Utah climate actually demands, which is more frequently than the climate at lower elevations. UV at 4,300 feet hits stain hard, and the stuff that lasts 5 years in Portland gives you 2.5 years here.
This page is about the refinish work. Stripping old finish off. Cleaning, sanding, prepping. Re-applying stain or sealer. And the small subset of cases where painting a deck (rather than staining) is actually the right call.
Stain vs. paint: when to use which
Semi-transparent stain. The default for most wood decks. Penetrates the wood, lets the grain show, lets the wood color through. Lasts 2 to 3 years on south- and west-facing decks at this elevation, 3 to 4 years on east- or north-facing. Has to be reapplied to the whole deck, not just touched up in worn spots.
Semi-solid (or semi-opaque) stain. Heavier pigment than semi-transparent. Shows less grain, hides minor wood blemishes, lasts about a year longer than semi-transparent per coat. The right choice for decks where the wood has gotten weathered or where you want a more uniform color.
Solid stain. Almost like paint but penetrates more. Hides the grain completely. Often a good choice for older decks where the wood looks tired but is still structurally sound. Lasts 4 to 6 years between coats but can peel if applied over an inadequately prepped surface.
Paint. Sits on top of the wood. Doesn't penetrate. Lasts 5 to 8 years if applied right, but peels visibly when it fails. We only recommend paint for railings, pergola lattice, or accent surfaces that are visually distinct from the main deck boards. Painting a horizontal deck surface in Utah usually ends badly. The freeze-thaw cycle pries the paint loose, and you end up scraping and stripping in year five instead of recoating cleanly.
If your deck is currently painted and you're refinishing it, expect significant prep cost. Stripping old paint off horizontal deck boards is meaningfully harder than re-staining a stained deck.
Prep is the actual job
Prep is the actual job. The stain is the easy part.
A re-stain done correctly is roughly 70% prep, 30% application. Cleaning the deck (power-washing with the right pressure, not the wrong pressure), letting it dry to the right moisture content (usually 4 to 7 days depending on humidity), sanding any rough or splintered boards, addressing any individual board damage, masking off the house and adjacent surfaces. None of that is the fun part. All of it is what makes the difference between a stain job that looks finished and one that looks finished for about three months before the streaks show.
Most DIY stain jobs go wrong in the prep phase. The deck doesn't get clean enough, or it gets cleaned with too much pressure (which shreds the wood fibers and creates a worse surface for stain absorption), or it doesn't dry long enough before stain goes on (which traps moisture and accelerates failure), or no sanding happens. The stain bottle takes one Saturday afternoon. The prep takes two or three.
We're not trying to talk anyone out of DIY refinishing if they enjoy the work and have the time. We are trying to set expectations honestly. You'd rather do the prep right and recoat in year three then skip the prep and recoat in year one.
What time of year to do the work
Spring (April through early June) and fall (mid-September through October) are the right windows. Summer is too hot. Direct UV on freshly applied stain can flash-dry the surface before the wood absorbs the material, leaving a thin, weak finish.
But here's where Utah gets specific. The Wasatch Front's winter temperature inversions can trap air pollutants in the Salt Lake Valley for weeks at a time, with the worst inversion days exceeding EPA safe limits for particulates. Oil-based stains release VOCs into the air, and applying them during a bad inversion makes the local air quality measurably worse. We avoid oil-based stain application during inversion advisories out of basic neighborly considerations, even though water-based products work fine in those conditions.
The 2025–26 winter was unusually mild and the inversion season was lighter than typical years, which gave homeowners an extended window for late-season refinishing work. Most years, the inversion-free window closes in late November and doesn't reopen until early March.
Frequently asked questions
How often should I re-stain my deck?
For semi-transparent stain on a south- or west-facing wood deck in Salt Lake County, plan on every 2 to 3 years. For semi-transparent on north- or east-facing decks, every 3 to 4 years. Solid stain extends those intervals to 4 to 6 years. Decks in the Cottonwood Club neighborhood or East Millcreek that get afternoon canyon shadow trend toward the longer end of the range. Decks in Highland Park that catch unobstructed sun are on the shorter end.
Can I stain my composite deck?
No, and you don't need to. Composite boards are color-through (the color goes through the board, not just on top), and they don't fade in a way that benefits from re-finishing. Capped composite specifically has a wear layer that staining wouldn't bond to. Save composite for what it does well: not needing this kind of work.
How much does a professional re-stain cost in Salt Lake City?
For an installed re-stain on a typical 400 to 500 square foot deck, including cleaning, light sanding, prep, and stain application, expect $1,500 to $3,500 depending on the deck condition and the product chosen. Decks needing significant board replacement, paint stripping, or major surface sanding can run higher. Stain product itself runs roughly $40 to $80 per gallon for professional-grade material, with most decks needing 2 to 4 gallons depending on absorption.
Should I sand the deck before re-staining, or is power-washing enough?
It depends on the deck's current condition. Light power-washing followed by a light sanding pass is the standard prep. If the deck has loose stain or weathered wood fibers, more aggressive sanding is needed. If old finish is failing in patches, full stripping followed by sanding is the right path. We assess this during the site visit.
Are you licensed and insured?
Yes. We're a licensed and insured custom deck builder serving Salt Lake County. General liability and worker's comp coverage are in place on every project, and we provide certificates of insurance on request before work begins.
Get a re-stain scheduled while the weather works
Spring booking fills up quickly in Salt Lake County. Send a photo of the deck's current condition and we respond within one business day with a prep assessment and product recommendation.
Call (801) 930-7243 or fill out the contact form.