PVC vs Composite Decking: Which One Is Right for Your Newmarket Home?

Walk into any deck showroom or scroll through any decking website and you'll quickly find yourself staring down a choice that seems deceptively simple: PVC or composite decking?

Both look great. Both outlast wood by decades. Both promise low maintenance. And yet they are genuinely different materials that perform differently, cost differently, and suit different projects — especially here in Ontario, where our climate has opinions about everything you put outdoors.

We've installed both materials on decks across Newmarket and the surrounding area for over 15 years. We know how they hold up through our winters, what they feel like underfoot in July, and which projects each one is actually the right fit for. This post gives you the full comparison — no fluff, no brand cheerleading — so you can make an informed decision.

Let's break it down.

What Are These Materials, Actually?

Before comparing them, it's worth being clear on what each one is. The terms get muddled online — sometimes intentionally by manufacturers — so let's set the record straight.

What Is Composite Decking?

Composite decking is made from a blend of recycled wood fibres and plastic polymers — typically around 40–60% wood content and 30–50% plastic, with a small percentage of binding agents, UV inhibitors, and colourants. The wood content is what gives composite boards their natural, warm, grain-like appearance.

Most quality composite boards sold today are "capped" — meaning the core is wrapped in a protective polymer shell on three or four sides. That cap is what makes modern composite significantly more durable than older uncapped products. It blocks moisture, resists surface staining, and provides UV protection. Think of capped composite as wood's look with plastic's durability.

What Is PVC Decking?

PVC decking is made entirely from polyvinyl chloride — 100% synthetic, zero wood content. There are no organic fibres in the mix at all. Because of this, PVC boards are completely impervious to moisture from the inside out. There's nothing to rot, nothing for insects to eat, and no organic material for mould to feed on.

Modern PVC boards have come a long way aesthetically. Early PVC had a reputation for looking plasticky and artificial. Today's premium PVC products feature textured, multi-tonal finishes that are genuinely convincing — though most honest comparisons will tell you composite still has a slight edge when it comes to replicating the warmth and variation of real wood grain.

A Quick Note on PVC vs Vinyl

People use these terms interchangeably, but they're not the same thing. PVC deck boards and vinyl decking are different products with different applications. When we talk about PVC decking in this post, we mean solid PVC deck boards — not roll-out vinyl membrane systems used for waterproofing. Worth knowing before you start comparing quotes.

Side-by-Side Comparison: PVC vs Composite Decking

How They Compare: The Details That Actually Matter

1. Durability and Lifespan

This is where PVC pulls ahead on paper.

Because PVC contains no organic material, it has no vulnerability to the things that typically end a deck's life early — rot, insect damage, and moisture infiltration. PVC decking lasts 30 to 50 years compared to composite's average lifespan of around 25 years, making it the more durable option on a long-term basis.

Composite decking still significantly outperforms wood. A quality capped composite deck built properly in Ontario will last 25–30 years with minimal maintenance — and premium products from brands like Trex and TimberTech come with structural warranties to back that up.

The honest answer: if you're building a deck you genuinely never want to think about replacing, PVC is the longer-lasting material. If a 25–30 year lifespan sounds perfectly acceptable — which for most homeowners it absolutely does — capped composite gives you that with a lower upfront investment and better aesthetics.

2. Appearance and Aesthetics

Composite wins here, and most people who've stood on both materials will tell you the same.

The wood fibre content in composite boards creates a warmth and texture that PVC simply can't fully replicate, even with modern embossing and colouring technology. Composite boards look like wood. The grain patterns, colour variation, and surface feel come much closer to real timber than a fully synthetic product can achieve.

That said, PVC has improved enormously. Premium PVC products today feature multi-tonal colouring, realistic grain patterns, and a range of finishes that look genuinely attractive — particularly in contemporary or modern design schemes. If your home's style leans clean and modern rather than warm and traditional, PVC can be a strong aesthetic fit.

Where PVC can look less convincing is in side-by-side settings with natural elements — beside a heavily wooded yard, adjacent to cedar or timber framing, or when matched against natural stone landscaping. Composite tends to harmonize with those surroundings more naturally.

Both materials come in a wide range of colours and profiles, so your deck design options are broad with either choice.

3. Performance in Ontario's Climate

This is where the conversation gets specific to us — and it matters more than most generic comparison articles acknowledge.

Ontario gives you everything: -25°C winters, freeze-thaw cycles through March and April, humid summers pushing 35°C with full UV, and everything in between. Both materials handle our climate well, but they do it differently.

Freeze-thaw cycles: PVC decking excels in climates with extreme temperature fluctuations, maintaining stability without significant expansion or contraction. Composite decking performs well overall but can be prone to some minor warping in similar conditions. That said, quality capped composite installed with proper gapping handles Ontario winters well in practice. The key with either material is correct installation — boards need room to expand and contract, and gapping specs differ between composite and PVC.

Heat in summer: PVC boards can get noticeably warm in direct sunlight, particularly in darker colours. This has been a longstanding criticism of PVC, though premium products have improved significantly. In direct sunlight, PVC can get hot underfoot, especially in darker colours. Composite boards tend to feel more comfortable underfoot in the same conditions, particularly on south-facing decks in peak summer.

Moisture: PVC wins this category outright. No organic content means no moisture absorption — period. For decks around pools, under covered areas with limited drying time, or on ground-level builds with poor ventilation underneath, PVC's full waterproofing is a genuine advantage. Composite decking with a quality four-sided cap handles moisture very well too, but it's not the same as a fully inorganic material.

Mould and mildew: Both materials get surface mould in the right conditions — typically shaded spots with poor drainage and organic debris accumulation. The difference is that PVC has nothing for mould to actually feed on. Surface mould on PVC is cosmetic and washes off easily. On composite, while the cap prevents deep penetration, cleaning needs to be a bit more thorough.

4. Maintenance Requirements

Both are genuinely low maintenance compared to wood. But PVC sits closer to the "zero maintenance" end of the scale.

PVC maintenance: A wash with soap and water once or twice a year. That's essentially the full maintenance program. No staining, no sealing, no sanding — ever. PVC decking is a low-maintenance option — practically maintenance-free, with only occasional washing needed to maintain its fresh appearance.

Composite maintenance: Also very low. Capped composite needs a good clean in spring and fall. Remove organic debris that sits in board gaps. Occasionally address surface mould if it appears in shaded spots. Never stain or paint composite — it damages the cap and voids warranties.

One thing worth knowing about PVC: it can discolour if rubber mats or rubber-backed furniture pads are left on the surface for extended periods. Most PVC manufacturers specifically warn against this. Composite doesn't have this sensitivity.

For ongoing upkeep help, our deck repair and maintenance service in Newmarket covers both materials.

5. Cost Comparison

Here's the part most people want to see laid out clearly.

PVC ranges from roughly $8–$12 per square foot for boards, while composite typically falls in the $5–$10 range, with premium lines from either category pushing costs higher. Keep in mind these are board costs only — substructure, framing, footings, railings, and labour are separate and apply equally to both materials.

So PVC typically costs more upfront. The gap narrows on larger projects and closes further when you account for long-term maintenance costs. With a potential 50-year lifespan and near-zero maintenance costs, PVC's lifetime value case is strong — particularly for a homeowner planning to stay in their home long-term.

Composite offers a lower entry point with a still-excellent 25–30 year performance window. For most homeowners in Newmarket, a quality capped composite build represents the stronger value-to-cost ratio unless the project has specific conditions (pool deck, high moisture, premium longevity) that push the case toward PVC.

We give every client a clear cost breakdown for both options on their specific project so you can make the comparison with real numbers rather than general ranges.

6. Environmental Impact

Composite has the edge here for most buyers who prioritize sustainability.

Composite decking is manufactured using recycled wood fibres and recycled plastics — giving a second life to materials that would otherwise end up in landfill. The percentage of recycled content varies by manufacturer, but most quality brands use a substantial recycled component.

PVC is made primarily from virgin polyvinyl chloride — a petroleum-based plastic. The manufacturing process is more energy-intensive and uses fewer recycled inputs. Composite manufacturers often use a higher percentage of recycled material, while PVC is often manufactured from virgin materials.

That said, PVC does have one environmental counter-argument: it's 100% recyclable at end of life, while composite — being a mixed-material product — is harder to recycle and more likely to go to landfill when it's done.

Neither material is perfect from an environmental standpoint. But if sustainable sourcing is a priority in your purchasing decisions, composite gets the nod.

7. Installation Differences

Both materials install similarly at a high level — hidden fasteners, gapped boards, proper substructure. But there are a few differences worth knowing.

Joist spacing: PVC deck boards are more flexible and less rigid than composite boards, which can be a concern with sagging between joists. It is often recommended to space joists 12 inches on centre instead of 16 inches when using PVC. Closer joist spacing means more material cost in the frame. This is a real installation consideration that affects your overall project budget, and it's something we factor in when quoting PVC builds.

Weight: PVC boards are lighter than composite, which makes handling and installation easier — particularly on elevated or second-storey deck projects where you're carrying materials up a level.

Expansion and contraction: Both materials expand and contract with temperature changes — they just do it at different rates. PVC has greater thermal movement than composite. This means gapping specifications differ, and fasteners must be placed correctly per each manufacturer's installation guide. Getting this wrong causes problems down the line regardless of which material you choose.

Permits and code: Both materials require the same structural compliance — footings, framing, ledger attachment, railing heights. The boards themselves don't change your permit requirements. Every deck build we do in Newmarket goes through the proper permit process regardless of surface material.

Which Projects Suit Each Material?

After fifteen years of installs in this area, here's how we think about which material fits which project.

Choose Composite Decking If:

Your deck is in a natural or wooded setting. Composite's wood-grain aesthetic harmonizes with trees, gardens, and natural stone better than PVC. If your backyard has mature trees and natural landscaping, composite will look like it belongs there.

Aesthetics are the top priority. Composite still produces the most convincing wood look available in a manufactured board. If the visual result matters most, composite is where that conversation ends.

Budget is a factor. Composite's lower board cost gives you more square footage for the same investment, or frees up budget for upgrades like built-in lighting or a pergola or cabana structure.

You're building a standard backyard entertaining deck. Most general-use decks in Newmarket — attached decks, ground-level decks, wraparound decks — are excellent candidates for capped composite. The material performs well, looks great, and will give you decades of use.

Sustainability matters to you. Composite's recycled content makes it the more environmentally conscious choice.

→ Explore composite decking installation in Newmarket

Choose PVC Decking If:

You're building a pool deck. This is the clearest use case for PVC. Around water, a fully synthetic material that can't absorb moisture, won't go slippery with algae the same way, and dries faster is the better-engineered choice. Our pool deck installations frequently use PVC for exactly this reason.

Your deck has high, sustained moisture exposure. Below-grade decks, decks in very shaded areas with poor drying time, or decks directly adjacent to water features — PVC handles these conditions better than any composite, no matter how good the cap.

You want the longest possible lifespan. If you're building once and genuinely never want to think about it again, PVC's 50-year potential lifespan and virtually zero maintenance requirements make a strong case.

You're building an under-deck waterproofing system. PVC's complete moisture impermeability pairs naturally with waterproofing applications.

Your design aesthetic is clean and contemporary. PVC's polished, modern finish suits contemporary home styles. If your home's exterior is clean lines and minimal detailing, PVC can be an excellent design match.

→ Explore PVC decking installation in Newmarket

Can You Mix PVC and Composite on the Same Deck?

Yes — and it's worth knowing this is an option.

Some homeowners use composite boards for the main deck surface where aesthetics are the priority, and switch to PVC for the pool surround or wet zone where waterproofing performance matters more. The approach works, but it requires careful planning: the two materials have different expansion rates and different installation requirements, so each section must be fastened and gapped according to its own manufacturer specs.

We can design and build mixed-material decks. It's a great way to get the visual warmth of composite on the primary entertaining area while having PVC exactly where the water exposure demands it.

The "Neither Is Wrong" Reality

Here's our honest take after years of building with both.

There is no objectively correct answer between PVC and composite decking. Both are excellent materials. Both will give an Ontario homeowner a deck that outlasts any wood product while demanding a fraction of the upkeep.

The choice comes down to your specific project, your design preferences, your budget, and how your deck will actually be used. A pool-side PVC build and a wooded-backyard composite deck can both be exactly the right answer for those respective situations.

What matters most is that whichever material you choose, it's installed correctly — proper footings below the frost line, correct joist spacing for the material, gapping done to spec, and the right fastener hardware throughout. A premium PVC board on a poorly built structure will fail before a mid-range composite on a properly built one.

That's what we focus on first. The material choice comes second.

Frequently Asked Questions

Which lasts longer — PVC or composite decking? PVC has the longer potential lifespan, typically 30–50 years compared to composite's 25–30 years. This is because PVC contains no organic material and is fully resistant to rot, moisture penetration, and insect damage. Capped composite still significantly outperforms wood and will last 25–30 years with normal care in Ontario's climate.

Is PVC decking worth the extra cost? For specific applications — pool decks, high-moisture environments, or homeowners who want the absolute minimum maintenance commitment — yes. For a standard backyard deck with normal exposure, capped composite delivers excellent value at a lower entry cost. We can walk you through a real cost comparison for your specific project.

Which material is better for Ontario winters? Both handle Canadian winters well when installed correctly. PVC has slightly lower thermal expansion, which can be an advantage in extreme temperature swings. The bigger factor for either material is the substructure — footings below the frost line, proper drainage, and framing built to handle freeze-thaw movement. The boards matter less than the foundation they sit on.

Does composite decking get mould in Ontario's climate? Surface mould can develop on any deck material in shaded or poorly drained spots — including composite. On capped composite, surface mould stays on the exterior and doesn't penetrate the board. A semi-annual wash handles it. PVC has no organic content for mould to feed on, making it slightly more mould-resistant in persistently wet conditions.

Which material is better for a pool deck? PVC is generally the stronger choice for pool decks. Full waterproofing, no moisture absorption, better mould resistance, and faster drying after water exposure all point toward PVC for pool-side applications. See our pool deck installations in Newmarket for examples.

Can I install either material myself? Both materials require proper substructure construction — footings, framing, ledger attachment — that needs to be done correctly to hold up long-term. The boards themselves are manageable for an experienced DIYer, but the structure underneath is where mistakes happen and where Ontario's climate is unforgiving. We'd always recommend a professional build, at minimum for the framing and footings.

Which is more eco-friendly? Composite decking uses higher recycled content (wood fibres and plastics), making it the greener choice at the manufacturing stage. PVC uses primarily virgin materials but is 100% recyclable at end of life. For most buyers focused on sustainability, composite is the more environmentally responsible option.

Do both materials need to be gapped during installation? Yes. Both PVC and composite expand and contract with temperature changes, and boards need gapping to accommodate this movement. The gap size differs between materials and brands — follow the specific manufacturer's installation guide. Incorrect gapping causes boards to buckle or gap excessively over time.

Which feels better underfoot in summer? Composite is generally cooler underfoot in direct sun, particularly in darker colours. PVC can get warm in intense sunlight, though premium products have improved significantly. On a south-facing Ontario deck in July, colour choice matters as much as material — lighter colours stay cooler regardless of which you pick.

How do I decide between the two? Tell us about your project — where your deck is located, how you'll use it, what your budget looks like, and what aesthetic you're after. We'll give you a straight recommendation based on your specific situation rather than a generic answer. Call us at (416) 333-2366 or read our companion post How Long Do Composite Decks Last for more detail on composite performance over time.

Still Not Sure Which One Is Right for You?

That's completely normal — it's a real decision with real money behind it and a 30-year timeline ahead. We'd rather you take the time to get it right than rush into something.

Give us a call at (416) 333-2366. We'll come out, look at your specific space, talk through how you'll use the deck, and give you a clear recommendation with pricing for both options. No pressure, no sales pitch — just a straight answer from builders who've installed both materials dozens of times in this exact climate.

Your deck should be something you're still happy about in twenty years. Let's make sure it is.

XP Decking | Newmarket, Ontario | (416) 333-2366

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