Short answer: composite decking usually lasts longest with the least maintenance in Toronto weather. Cedar offers a natural look with good rot resistance, and pressure-treated wood is the most budget-friendly but needs the most upkeep. Whatever you choose, solid footings decide how long the deck really lasts.
Toronto decks face hot summers, freeze-thaw cycles, snow and spring rain. Here is how the three most common decking options hold up.
Pressure-treated wood
Pressure-treated lumber is strong, widely available and the lowest-cost option. Without regular sealing or staining it can crack, warp and splinter after a few seasons of freeze-thaw.
Cedar
Cedar has a warm natural look and resists rot and insects better than untreated wood. It is softer, so it can dent, and it needs regular staining to keep its colour and protect it from the weather.
Composite decking
Composite boards are made from wood fibres and plastic. They do not need staining, resist rot and splinters, and keep their colour well. They cost more upfront, can feel warm in direct sun, and need correct spacing and joist layout to allow for expansion and contraction.
Side-by-side
- Lowest upfront cost: pressure-treated wood.
- Natural look with good rot resistance: cedar.
- Lowest maintenance and longest-lasting surface: composite.
- Best for freeze-thaw: composite or well-maintained cedar.
The part you do not see matters most
A great surface on weak footings will still sag, shift or heave with frost. See common deck footing problems and how we build on solid deck posts and footings or helical piles.
Frequently asked questions
Can composite boards go on an existing wood frame?
Sometimes, if the frame is sound and the joist spacing matches the manufacturer’s requirements. Many composite boards need closer joist spacing than wood.
How often should a wood deck be stained?
It depends on sun exposure and product, but plan on regular re-staining every few years to protect it.
Does decking choice affect permits?
Permits depend on the deck’s size, height and attachment, not usually the board material. See deck permits in Toronto.
Choose your decking with confidence
Ready to plan your deck? Get a quote from our deck builders or call 416-721-9971.