Composite or PVC Decking: What’s the Difference?

Patio Lunawood deck with chairs
Title

If you’re looking for a low-maintenance alternative to wood, composite and PVC decking are usually the two main options. They can look similar at first glance, but they are not the same material, and that affects heat, weight, price, and performance around water.

Quick answer

Composite decking is made from a mix of plastic and wood fibres. PVC decking is a wood-free synthetic board. In general, PVC is often lighter and more moisture-resistant, while capped composite is often more budget-friendly. The better choice depends on your budget, sun exposure, water exposure, and the exact product line you’re comparing.

by Alex Krupin (LinkedIn profile)

Founder and Director of Composite Deck Shop

5 Differences Between Composite and PVC Decking

1) Heat Retention

No deck board stays cool in direct summer sun. That said, PVC often runs a bit cooler than composite, especially when you compare similar colours and profiles. Darker boards of either material will feel hotter than lighter colours.


If heat is one of your main concerns, do not choose by material alone. Compare the exact colour, texture, and product line.

2) Weight

PVC boards are often lighter than comparable composite boards, which can make them easier to carry, cut, and install. But weight is not identical across every board. Profile, thickness, width, and brand all change the final number.


In other words, PVC is usually lighter, but you should always compare the exact board you plan to use.

3) Cost

Composite usually wins on upfront price. PVC often sits in the premium tier, but the gap is not always huge. Some premium capped composite lines can overlap with mid-range or entry PVC pricing.


When comparing quotes, look at the installed cost, not just the board price. Fasteners, framing details, stairs, skirting, and railing can change the total project cost more than people expect.

4) Moisture Absorption

This is where PVC usually has the clearest edge. Because it contains no wood fibres, PVC is often the safer choice for pool decks, waterfront projects, and other high-moisture areas.

That does not mean capped composite is automatically the wrong choice near water. Quality capped composite can still perform very well outdoors. 

 

It just means drainage, ventilation, spacing, and routine cleaning matter even more.

For docks, marinas, and other specialty builds, always check the exact manufacturer guide and warranty instead of assuming every composite or every PVC line performs the same way.

5) Aesthetics

A few years ago, it was easier to say PVC had the premium look. Today, that is much less true. Premium PVC and premium capped composite both come in realistic woodgrain patterns, varied streaking, and attractive colours.


For most homeowners, the better question is not “Which material looks better?” It is “Which collection looks best on my home?”

Composite vs PVC Decking at a Glance

Composite

PVC

Material:

Plastic + wood fibres

Wood-free synthetic board

Heat in full sun:

Often warmer overall

Often a bit cooler overall

Weight:

Usually heavier

Usually lighter

Upfront cost:

Usually lower

Usually higher

Moisture resistance:

Good on quality capped lines

Usually the better option for wet locations

Best fit:

Value, everyday performance, strong style options

Poolside, waterfront, lighter boards, premium builds

At Composite Deck Shop, we’re always ready to answer any questions you may have, offer suggestions, and make you a free estimate! Send us an email at info@compositedeckshop.com or give us a call at 888 788-6788 .

Which Should You Choose?

Choose composite decking if you want the best balance of price, performance, and style for a typical backyard deck.


Choose PVC decking if your project is near water, you want the lightest board possible, or you are aiming for a premium build and want the strongest moisture resistance.

Low-Maintenance Does Not Mean No-Maintenance

Both materials are low-maintenance, but neither one is maintenance-free. Seasonal cleaning still matters. Keep gaps clear, wash off pollen and debris, and follow the care guide for your exact board if you ever use a pressure washer.

A Few Smart Buying Tips

Before you decide, compare the exact board, not just the material category.


Check whether the board is capped on three sides or four, what warranty comes with that specific line, what the care and cleaning guide says, whether pressure washing is allowed and at what PSI, and how the colour looks in full sun and shade.


At the end of the day, both composite and PVC are excellent low-maintenance alternatives to wood. The right choice comes down to where the deck is going, how much sun and moisture it will see, and how close you want to stay to budget.


If you’re comparing product lines and want a second opinion, Composite Deck Shop can help you narrow down the right board for your budget, design, and site conditions.

Need help choosing the right material for your backyard?

We can help you compare these options based on your site conditions (shade, trees, moisture, salt exposure, traffic) and your desired look (natural patina vs “stay closer to original colour”).

 

Visit our showrooms in Vaughan, Peterborough, London, or Barrie or call (888) 788-6788.

Have questions?
We have answers!

In this blog

5 Key Differences

At a Glance

Which to Choose

Low Maintenance, Not No Maintenance

Buying Tips

FAQ

Q1: What is the main difference between composite and PVC decking? 

A: Composite decking mixes plastic and wood fibres. PVC decking is a wood-free synthetic board. That material difference is the main reason PVC is often lighter and more moisture-resistant, while composite is often more budget-friendly.

Q2: Does PVC decking get less hot than composite?

A: Often, yes—but not by enough to call it cool. Both materials heat up in full sun, and darker colours usually feel hotter than lighter ones.

Q3: Is PVC decking lighter than composite? 

A: In many product lines, yes. PVC is often lighter, which can make handling and installation easier. Exact weight still depends on the board profile and brand.

Q4: Is PVC decking more expensive than composite?

A: Usually, yes. PVC often sits in a higher price tier, although premium capped composite can overlap with some PVC lines.

Q5: Which is better for poolside or waterfront decks?

A: PVC is usually the safer choice for very wet locations because it contains no wood fibres. For docks and other specialty applications, always confirm the exact manufacturer guide and warranty.

Q6: Can composite decking absorb moisture?

A: Composite contains wood fibres, so moisture management matters more than it does with PVC. Quality capped composite still performs well, but proper drainage, spacing, ventilation, and cleaning are important.

Q7: Does PVC always look better than composite?

A: No. Today, premium PVC and premium capped composite can both look excellent. The final look depends more on the exact collection, colour, and finish than the material alone.

Q8: Is composite or PVC decking maintenance-free?

A: Neither one is maintenance-free. Both are low-maintenance, but both still need routine cleaning and care.

Q9: Which decking should I choose?

A: Choose composite if you want strong overall value for a typical backyard deck. Choose PVC if your deck is near water, you want a lighter board, or you are leaning toward a premium build.