The deck you build in Ontario, California will bake under some of the hottest, driest conditions in Southern California, and the boards you choose decide how well it survives. Deck material selection is the single biggest factor in what your deck costs, how it looks in ten years, and how many weekends you spend maintaining it. This guide compares composite, PVC, pressure-treated wood, cedar, and redwood on cost, durability, and upkeep in Inland Empire conditions. You will not find a sales pitch for one product line here. Instead, you will get straight comparisons grounded in what actually holds up to San Bernardino County sun, so you can commit to a material before you commit to a design or a builder.

What You'll Find in This Guide

Deck Material Selection: What Each Option Costs in Ontario, CA

Why Inland Empire Heat Drives Deck Material Selection

Most decking advice online assumes a mild or wet climate. Ontario, California is neither. Summer temperatures in the Inland Empire regularly push past 100 degrees, humidity stays low, and UV exposure runs high for most of the year. As a result, the failure modes you should worry about are different from what a homeowner in Ontario, Canada or the Pacific Northwest faces. Rot and mold matter less here. Instead, sun damage, surface heat, and moisture cycling from dry heat to winter rain do most of the damage.

Wood reacts to this climate in predictable ways. Unsealed boards dry out, shrink, and crack. Additionally, intense UV breaks down the lignin in wood fibers, which turns rich cedar and redwood tones gray within a season or two. You can fight this with regular staining and sealing, but the schedule is more demanding here than in cooler regions. In practice, most Inland Empire wood decks need attention every one to two years to stay presentable.

Composite and PVC face a different challenge: heat retention. Dark synthetic boards can get uncomfortably hot underfoot in direct afternoon sun. However, manufacturers have responded with lighter colorways and heat-mitigating cap technologies, and capped products resist fading far better than early-generation composites did. That shift shows up in the market data. According to Grand View Research, capped composite decking and railing held a 57.8% product market share in 2025, largely because homeowners want that protective layer and the low maintenance that comes with it.

Match the Material to Your Deck's Exposure

Before you compare products, look at your yard. A deck with full western exposure in Fontana or Rancho Cucamonga takes far more punishment than a shaded, north-facing deck in Upland. For example, a hot, unshaded site might push you toward a light-colored capped composite or a plan that includes a patio cover. Conversely, a shaded site opens the door to redwood or cedar without an exhausting maintenance burden. With this in mind, treat the question of which materials work best for a hot climate as a question about your specific lot, not just a product ranking. Good selection starts with the site, not the catalog.

Comparing Composite, PVC, and Wood Decking

Every material involves a tradeoff between upfront cost, lifespan, and ongoing effort. To put it simply, you either pay more now or work more later. Here is how the main options stack up for Southern California homeowners.

Pressure-Treated Wood: Lowest Cost, Highest Upkeep

Pressure-treated pine remains the budget entry point. It handles structural duty well, which is why nearly every deck frame uses it regardless of the surface material. As a decking surface, though, it demands the most from you. Expect to stain and seal on a regular cycle, and expect some boards to check, cup, or splinter in Inland Empire heat despite your best efforts. That said, if your budget is tight and you accept the maintenance, it delivers a real deck at the lowest price per square foot.

Cedar and Redwood: Natural Beauty With a Maintenance Contract

The cedar vs redwood question comes up constantly, and the honest answer is that they behave similarly here. Both offer natural resistance to insects and decay, and both look beautiful when freshly finished. Redwood tends to be more available and more historically popular in California, while cedar often runs slightly cheaper depending on grade. However, neither escapes the UV problem. Skip a sealing cycle and both go gray fast in our sun. Choose these woods because you love the look and will keep up the finish schedule, not because you want low effort.

Composite and PVC: Pay Once, Maintain Little

Composite boards blend wood fibers and plastic, while PVC boards are fully synthetic. Both resist fading, splintering, and moisture, and both need only occasional cleaning instead of staining. According to Angi, professionally installed composite decking runs $25 to $54 per square foot, a real premium over wood. PVC costs even more but weighs less and shrugs off moisture completely, which matters more near pools than on a typical dry Ontario, California lot. The main PVC drawbacks are price, a more plastic appearance in some lines, and thermal expansion that demands careful installation. For most Inland Empire homeowners who want low maintenance options, capped composite hits the sweet spot.

Budgeting for Materials, Lifespan, and Long-Term Value

Sticker price tells only part of the story. Consequently, smart material selection compares total cost of ownership, not just the day-one invoice. A pressure-treated deck costs less to build but consumes stain, sealer, and your weekends for its entire life. A composite deck costs more upfront but asks almost nothing afterward. Over 20 years, those two curves often cross, and the "expensive" deck can end up the cheaper one. Our guide to what deck material selection actually costs walks through those numbers in detail, including how deck size and shape change the math.

Lifespan Comparison in Dry Heat

Lifespan varies by material and by how faithfully you maintain it. In broad strokes for our climate, pressure-treated decking lasts roughly 10 to 15 years with consistent care. Cedar and redwood land in a similar range, sometimes longer with diligent sealing. Meanwhile, quality capped composite and PVC products commonly carry 25 to 50 year warranties, and the boards genuinely outlast wood because sun and dryness cannot crack them the same way. The scale of aging decks nationwide underlines why this matters. The North American Deck and Railing Association estimates that of the more than 60 million decks in the U.S., about 30 million are past their useful life and need repair or replacement. A material chosen for longevity keeps you out of that statistic.

Do Not Forget Permits and Structure

Whatever surface you choose, the frame underneath and the paperwork behind it affect your budget too. Ontario, California and neighboring cities like Chino, Corona, and Riverside require permits for most deck construction. According to HomeAdvisor, a deck building permit typically costs between $230 and $500 depending on location. Additionally, heavier materials like some PVC and composite lines may require tighter joist spacing, which adds framing cost. Because of details like these, get material decisions and structural plans made together, not separately. A builder who works in San Bernardino County and Riverside County every week already knows how local inspectors expect these decks to be built.

Maintenance Realities: What Each Material Asks of You

Maintenance is where good intentions meet real life. Therefore, be honest with yourself about how much deck care you will actually do, because the wrong answer costs you a deck.

Wood decking in the Inland Empire needs a cleaning and a fresh coat of stain or sealer roughly every one to two years. Skip it, and UV damage compounds quickly. First the color fades, then the surface fibers break down, and eventually boards crack and splinter. Repairs then cost far more than the maintenance would have. For example, replacing scattered failed boards on a neglected redwood deck often costs several times what a decade of sealing would have.

Composite and PVC flip that equation. In most cases, a hose, a soft brush, and mild soap a couple of times a year keep them looking new. There is no sanding, no staining, and no sealing. However, low maintenance does not mean zero attention. You should still clear debris from board gaps, check fasteners, and inspect the wood substructure, because even a composite deck sits on a pressure-treated frame that ages.

Inspection Matters No Matter What You Choose

Every deck needs a periodic safety check regardless of surface material. Footings settle, ledger connections loosen, and railings work themselves free over time. NADRA estimates that half of the roughly 50 million residential and commercial decks in the U.S. are more than 25 years old, which is exactly the age range where hidden structural problems appear. If you are replacing an aging deck rather than building new, have the frame evaluated before you assume you only need new boards. Sometimes resurfacing with new decking makes sense. Other times, the structure underneath has reached the end of its life, and being honest about material and durability includes recognizing when the whole deck needs replacement.

Ready to Get Started?

If you are weighing composite against wood for a yard in Ontario, Rancho Cucamonga, Fontana, Corona, Riverside, Chino, or Upland, talk it through with a local specialist who builds in this heat every week. We will give you straight answers on cost, lifespan, and maintenance for your specific site, with no pressure toward any one product line. Reach out for a free consultation and get a material recommendation you can build on with confidence.