Does Composite Decking Get Hot in Utah?

Yes. Any deck surface exposed to direct Utah summer sun will become hot — composite, Advanced PVC, wood, or concrete. This is not a defect; it is a physics reality.

Darker colors absorb more solar energy and generally become hotter than lighter colors. A dark espresso-toned board in full afternoon sun will be noticeably warmer underfoot than a light gray or tan board in the same conditions.

Some current products include heat-mitigating technologies. Trex Transcend Lineage, for example, carries SunComfortable™ designation across all seven colors. Trex itself notes that even SunComfortable boards can become hot in direct sunlight — the technology reduces heat buildup compared to earlier Trex boards, but it does not eliminate it.

Shade, orientation, and color all matter. A pergola, shade sail, or covered structure over part of the deck changes the experience significantly. East-facing decks that receive morning sun but are shaded by afternoon are generally more comfortable than west-facing decks that absorb peak afternoon heat.

If heat comfort is a priority for your project, we discuss color selection, shade structure options, and material choices together — not as separate decisions.

SunComfortable™ designation is collection-specific and color-specific — not a brand-wide Trex claim. The current approved catalog data is the source of truth for which colors carry the badge.

All seven Transcend Lineage colors carry SunComfortable™ designation. Three of the five Transcend colors carry it. Three of the six Select colors carry it. Two of the four Enhance Basics colors carry it.

Colors within the same collection that do not carry SunComfortable™ designation are not covered by that claim, regardless of how they look on screen.

Trex itself qualifies SunComfortable™ with the note that all decking can become hot in direct sunlight and darker colors generally become hotter. We apply the same qualification whenever we discuss heat performance.

If you want to know whether a specific color carries SunComfortable™ designation, the color cards on our Composite Decking page show the badge where it applies.

We do not declare a winner on this question, and here is why that matters.

Both Trex and TimberTech publish heat-performance information for certain products. But those claims come from different products, different colors, different test methodologies, and different comparison baselines. Applying a headline number from one manufacturer's test to a different manufacturer's product produces a comparison that was never actually made.

What we do instead: we evaluate the specific collection, the specific color, the site's sun exposure, and how the deck will be used. A lighter-colored Advanced PVC board in a shaded application and a darker composite board in full afternoon sun are not comparable by brand alone.

If heat comfort is a priority for your project, bring it into the planning conversation early. Color selection, shade structure, and material choice all contribute to the outcome — and they work better when planned together.

Color selection for a full-sun Utah deck involves more than personal preference — it affects how the deck performs and how it looks alongside the rest of the outdoor space.

Lighter colors generally absorb less heat than darker ones. On a south-facing deck that receives direct afternoon sun from June through August, a lighter warm gray or tan board will be noticeably more comfortable underfoot than a deep espresso or charcoal tone. That does not mean darker colors are wrong — it means the tradeoff is worth understanding before you choose.

Architecture and house color matter. A deck that reads as an extension of the house benefits from colors that complement the exterior — siding, trim, stone, and brick. We look at the full palette of the outdoor space, not just the deck boards in isolation.

Retaining walls and pavers matter. If the deck connects to or is adjacent to Belgard pavers or natural stone, the color relationship between the deck surface and the hardscape affects the overall composition.

Railing matters. The railing color and material — black aluminum, white composite, cable — changes how the deck board color reads from a distance and up close.

Shade structures matter. A pergola or covered structure over part of the deck changes both the heat performance and the visual character of the space. A darker board under a pergola may be perfectly comfortable.

Physical samples are essential. Screen colors are planning references only. The texture, grain depth, and color variation of a composite or PVC board can only be evaluated in person. We have Trex and TimberTech samples available at our Murray location.