Pressure-Treated vs Cedar vs Composite Decking

Pressure-treated lumber is the workhorse of Michigan decks: affordable, widely available, and chemically treated to resist rot and insects. It is the value choice, but it needs regular sealing or staining to fight the warping, cracking, and splintering that freeze-thaw and sun cause, and it can be left with greenish tones. Cedar is a naturally rot- and insect-resistant softwood with a beautiful warm grain and no chemical treatment. It is more expensive than pressure-treated and softer (more prone to dents and wear), and it too needs sealing to hold its color rather than weathering to gray.

Composite boards are a blend of wood fiber and plastic, engineered specifically to do what wood will not: resist rot, insects, warping, and fading with very little maintenance — no annual staining, just occasional cleaning. That low upkeep is its biggest draw for Michigan, where wood decks demand constant attention against the weather. The trade-offs are a higher upfront cost and a look and feel that, while much improved, some still find less authentic than real wood. It can also get hot in direct summer sun. For a deck you would rather not refinish every couple of years, composite is the standout.

Whatever the decking, the structure beneath is almost always pressure-treated lumber, because the joists, beams, and ledger must resist rot and carry load for decades. Even under composite boards, those framing members are wood and can rot if water sits on them or the ledger is unflashed — which is why deck repairs so often involve the framing regardless of the surface material. The fasteners and connectors matter too: galvanized or stainless hardware resists the corrosion that Michigan moisture causes. A good carpenter matches the surface to your maintenance appetite and keeps the structure built to last.