Composite decking has come a long way since the bumpy gray boards from the early 2000s that gave the category a bad name. You probably remember them. They started showing up in backyards around Sugar House and Liberty Park back when composite was new. Today's product looks closer to wood than most homeowners expect, holds up better in Utah's climate than wood does, and lasts roughly twice as long with no annual sealing or staining. The catch is the price tag at year zero. Whether that catch is worth swallowing depends on how long you plan to own the house and how many Saturdays you'd rather not spend with a sander.
Composite is roughly twice the up-front cost of pressure-treated wood, about 30 to 50 percent more than cedar, and about the same as premium hardwoods like ipé. Spread across 25 years of zero-maintenance ownership, the per-year cost typically lands below wood once you factor in stain, sealer, sander rentals, and the labor (yours or somebody else's) of doing it. That math is more favorable in Utah than in milder climates, because the freeze-thaw and UV that beat up wood here don't touch composite the same way.
What composite gets right and where it falls short
The right: composite doesn't fade meaningfully in Utah's UV, and the boards still look near-new at year ten. It doesn't crack from freeze-thaw. It doesn't grow mold in the shaded parts of the deck. It doesn't need stripping. Boards don't splinter the way wood does, and they don't develop the gray-out problem cedar gets after three years. Most major product lines now come in 20-foot lengths, so a long deck can be built with fewer butt joints. The 25-year residential warranties on the major brands are honest warranties; they're real.
Where it falls short: composite gets hot. Specifically, dark composite in direct summer sun in Utah can hit 140 degrees on the surface, hot enough to be uncomfortable barefoot. This matters more on south- and west-facing decks where the afternoon sun lands hardest. The fix is to choose lighter colors on those exposures, or to add shade structure (a pergola, a sail, mature trees) to break the worst of the afternoon heat. We talk about this on every south-facing deck we design in Arcadia Heights and 15th & 15th, where the afternoon sun is unobstructed.
The other shortcoming is that composite, once it's down, is what you've got. You can't strip it and re-finish it. You can't restain it a different color in year ten because you're tired of brown. Whatever you pick is the deck you have for 25 years. That's not a problem if you choose well, but it puts more weight on the design phase than wood does.
The big three brands, and how they actually compare
Most composite decks in Salt Lake County go down with one of three brands: Trex, TimberTech, or Azek. These get covered in detail on their own pages, but at a category level, here's the honest comparison most showrooms won't give you.
The big three are more alike than the marketing suggests. All three offer capped composite (a wear layer molded over the core) and uncapped composite (older formulation, lower price, lower performance). All three offer 25-year residential warranties. All three have similar fade and stain performance. All three have a good/better/best product tier inside their lineup, and the bottom tier of all three is more or less the same product at more or less the same price.
Where they differ:
Trex invented modern composite and remains the largest player. The brand has the broadest dealer and installer network in Utah, the most color options, and the longest track record on warranty claims. Trex is a wood-plastic composite, meaning real wood flour is in the core. We're a Trex Pro installer and build the most decks in this brand.
TimberTech (owned by Azek Company) makes both wood-plastic composite (the AZEK Vintage line) and a 100% PVC product. The PVC line is the lightest-weight option and arguably the most UV-resistant in Utah's high-elevation sun.
Azek is pure PVC across the line. Premium pricing, premium performance, and the closest visual match to real wood among the three.
Which one is right for your house depends on factors beyond the brand name. Sun exposure, the home's existing color palette, your installer's familiarity with the product and whether you care about recycled content (Trex leads here, with about 95% recycled material in their boards) all matter.
Why we push back on the entry tier
The entry-level composite tier from any brand is a false economy.
If you've decided to go composite, spend the extra to get the capped composite product, not the uncapped entry tier. The price gap is usually $4 to $7 per square foot installed. On a 500-square-foot deck that's $2,000 to $3,500 total. Across 25 years, the capped composite outlasts the uncapped by years, holds color better, resists stains, and won't develop the chalky surface that the bottom-tier composite eventually does. Anyways, the savings on the entry tier evaporate by year 12, and the next 13 years you spend looking at a deck that's aged worse than the one your neighbor put in for $3K more.
The brands lead with their flagship product for a reason. The flagship is the product that built the brand. The entry tier is there to win bids against contractors who don't explain the difference.
Frequently asked questions
How much more does composite cost than wood?
For installed cost in Salt Lake County, expect composite to run about 30 to 50 percent more than cedar and roughly double pressure-treated pine. A 400-square-foot composite deck typically runs $18,000 to $28,000 installed, versus $12,000 to $18,000 for the equivalent in cedar.
Does composite get hot enough to be a problem in Utah summers?
Dark composite on south- or west-facing decks can hit surface temperatures over 130 degrees in late July and early August. This is more of a barefoot-comfort issue than a structural issue. The fix is choosing a light to mid-range color on hot-exposure decks, adding shade structure, or both. North- and east-facing decks in neighborhoods like Foothill, where the Wasatch shadow falls early in the afternoon, rarely have this problem.
How does composite handle Utah's freeze-thaw cycles?
Composite expands and contracts about half as much as wood when temperatures swing, and the boards don't crack or check the way wood does. The 2022-23 winter, when statewide snowpack peaked at a record 26 inches of SWE, and the 2025-26 winter, the lowest-snowpack winter on record, both stress-tested composite differently. Both extremes left composite surfaces essentially unaffected. The boards under heavy snow in 2023 looked the same in spring; the boards baked in continuous UV in 2026 also looked the same.
How long does composite decking last?
Most major brands warranty residential composite for 25 years against fade, stain, and structural failure. Real-world lifespans typically exceed the warranty when the deck is properly framed and installed. Composite decks installed in the late 1990s and early 2000s, when the technology was still developing, are starting to show wear now after 20+ years. The current generation is materially better.
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.
See which composite brand fits your house
Send a few photos of your back yard. A front-yard view of the house also helps. We respond within one business day with material recommendations specific to your sun exposure and home style.
Call (801) 930-7243 or fill out the contact form.