Composite and PVC decking
Boards that don't need staining after every wet North Idaho winter, and the questions to ask before you choose them.
Composite decking is a mix of wood fiber and plastic; PVC decking is entirely plastic. Both are built to resist rot and to skip the wash, sand and stain cycle that wood needs. Around Coeur d'Alene, where decks spend the winter wet and snow-covered and then bake through a dry summer, cutting out that upkeep is the main reason people switch.
What should you weigh?
- Price. Composite and PVC usually cost more than treated wood up front. Many owners compare that with years of staining.
- Surface heat. Darker colors get hot underfoot on sunny July afternoons. Lighter colors or shade help.
- Movement. Boards grow and shrink with temperature. Builders follow the manufacturer's gapping and fastener rules so boards don't bow or open up.
- Snow and ice. Any deck gets slick in winter. Check the manufacturer's guidance on shovels and ice melt so you don't void the warranty.
- Fire. Composite is still combustible. Idaho's wildland fire guide calls for ignition-resistant decking within 10 feet of the house, so if you live near timber, ask about products rated for that. The deck guide has more.
Can composite go on the frame I already have?
Sometimes. If the footings, posts, beams and joists are solid and the joist spacing suits the new boards, a builder may be able to re-deck. Many composite products call for tighter joist spacing than older wood decks used, though, and the frame now has to outlast boards meant to go for decades. Expect the builder to pull a few boards, probe the joists and ledger, and check the hangers before recommending a re-deck or a new frame.
Protecting the frame underneath
Composite decks still almost always sit on treated wood framing. Joist tape on the tops of joists and beams, good ledger flashing, and enough gap between boards for water to drain all help the hidden structure last as long as the surface.
Railings that match
Most composite lines sell matching rail systems, and aluminum or cable railings pair well with them. See railings and stairs for options.
Is it right for a lake cabin or rental?
Owners of second homes and short-term rentals around the lake often lean toward composite because nobody has to be there every few summers to stain. If the deck sits near the water, ask the builder about board colors that stay cooler and about the county's shoreline rules before you pick a layout.
Every deck is priced by the builder after a site visit, once they've measured, looked at the grade and the house wall, and talked through materials with you. We don't give prices, and any figure you hear before that visit is a ballpark at best.
Where we connect you with help
Common questions
Is composite decking worth it in North Idaho?
For many owners, yes, because it removes the regular staining that wood needs after wet winters and hot summers. It costs more at the start, so compare the total over the years you expect to own the house.
Can composite boards replace wood boards on an old deck?
If the frame is sound and the joists are spaced closely enough for the product, often yes. A builder should inspect the ledger, joists and footings first.
Related services
More background: Coeur d'Alene deck guide.
Spongy boards, a loose rail, or a lake-view deck you keep putting off?
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