Composite lumber is a manufactured material made from a blend of wood fibre and plastic. It is designed to be used as a deck surface that resists the staining, checking, and colour change that affect wood surfaces over time. A composite deck does not need to be stained or sealed, does not splinter, and holds its appearance significantly better than bare wood through Eastern Ontario’s seasonal extremes.
That said, composite is not a maintenance-free material and it is not appropriate for every project or budget. Madawaska Exteriors installs composite deck surfaces on sound framing, discusses the real tradeoffs between composite and wood options, and gives you a clear estimate that covers the full scope — surface boards, framing, stairs, railings, and finishing details.
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When Composite Decks Make Sense
Homeowner wants less staining or sealing. A wood deck that is not maintained will grey, check, and eventually begin to deteriorate. If you are not prepared to refinish the deck every two or three years, composite is a significantly better long-term option. The higher upfront cost is offset by the reduced ongoing maintenance cost.
High-use outdoor space. Composite decks handle heavy foot traffic, furniture, and spills better than unfinished wood surfaces. For families who use their deck frequently through the summer — or year-round — composite holds its appearance better over time.
Backyard upgrade. When a deck is a significant feature of the home’s outdoor space and you want the finished result to look good for fifteen or twenty years without constant intervention, composite is the appropriate choice.
Replacement of worn wood surface. A deck with sound framing but a deteriorated wood surface can often be rescreeded with composite boards, saving the cost of full demolition and rebuild. We assess the existing framing during the estimate process to confirm whether it is structurally suitable for a composite resurfacing.
How Our Composite Deck Process Works
Existing site review. For new decks, we assess the site, grade, and connection point. For resurfacing projects, we inspect the existing framing for structural integrity, proper ventilation clearance, and compatibility with composite product requirements. Composite manufacturers specify minimum framing requirements — particularly joist spacing — and these need to be met for the product warranty to remain valid.
Board selection. We discuss board options including profile, colour, and capping level. We also confirm the fastening system — hidden fasteners or face screws — and whether finishing details like picture-frame borders are part of the scope.
Structure and surface installation. Framing is built or confirmed to meet composite requirements. Boards are installed with appropriate spacing for drainage and thermal expansion. Composite materials expand and contract with temperature, and improper installation gaps can lead to buckling or squeaking.
Final walkthrough. We review care expectations for composite surfaces — what to use for cleaning, what to avoid — so you know how to maintain the deck properly and get the longest service life from the material.
Related Fence and Deck Services
Deck Construction
Full deck construction options including pressure-treated and cedar surface materials alongside composite.
Outdoor Construction
Projects where a composite deck is part of a larger coordinated outdoor build.
Privacy Fencing
Privacy screening that can be planned alongside a new composite deck to create a fully enclosed outdoor living space.
Composite Deck Service Areas Throughout Eastern Ontario
We build composite decks for homes, cottages, and rural properties across Eastern Ontario.
Ottawa
Kingston
Belleville
Cornwall
Brockville
Pembroke
Quinte West
Prince Edward County
Smiths Falls
Perth
Carleton Place
Arnprior
Hawkesbury
Rockland
Kemptville
Renfrew
Why Choose Madawaska Exteriors for Composite Decks?
Maintenance-Aware Planning
We explain the real maintenance difference between composite and wood upfront, rather than overselling composite as “zero maintenance.” Composite decks need to be cleaned periodically and kept clear of debris that can stain or hold moisture. Understanding what the material actually requires lets you make the right decision for your situation.
Framing and Ventilation Focus
Composite surface products have specific requirements for framing and ventilation. Insufficient joist spacing leads to board flex. Poor ventilation traps moisture and can affect composite performance over time. We build decks that meet manufacturer specifications so the product performs as warranted.
Finish Detail Options
Picture-frame borders, hidden fasteners, coordinated stair and railing details — these choices have a real effect on how the finished deck looks and how satisfied you are with the result long-term. We discuss them during planning so the scope reflects what you actually want before pricing is finalized.
Frequently Asked Questions About Composite Decks
Are composite decks worth it in Ontario?
For most homeowners who use their deck regularly and want to avoid ongoing maintenance, yes. The higher upfront cost is offset over time by not having to stain, seal, or refinish the surface. If you are on a tight budget or are not planning to stay in the home long-term, pressure-treated wood is a more economical alternative. See our pressure-treated vs composite decks guide for a full comparison.
Do composite decks need maintenance?
Composite decks need less maintenance than wood decks, but they are not maintenance-free. Regular cleaning — sweeping debris and washing the surface periodically — keeps the deck looking good and prevents mold and mildew growth in areas with limited sun or air movement. Some capped composite products also benefit from occasional treatment with composite-specific cleaner to remove staining. Always follow manufacturer recommendations.
Can composite decking be installed over old framing?
Sometimes. It depends on the condition of the existing framing, the joist spacing, and whether the structure meets the composite manufacturer’s installation requirements. We assess the existing framing before recommending resurfacing to confirm it is structurally sound and appropriately configured.
Does composite decking get hot?
Composite decking does absorb heat from the sun and can become warm underfoot on hot summer days. Capped composite products tend to run cooler than uncapped solid-core boards. Lighter colours also absorb less heat than dark colours. If a deck gets significant direct afternoon sun in summer, this is worth factoring into your colour and material selection.
What affects the cost of a composite deck?
Deck size, composite board grade and brand, fastening system (hidden fasteners cost more than face screws), finishing details (picture-frame borders, composite railings), stair scope, and framing requirements. Composite material itself is more expensive per square foot than wood, which means the total cost for a composite deck is higher than a comparable wood deck of the same size. All costs are itemized in your written estimate.
