LumberCalcs: The Straight-Grain Figures for the Hand-Hewn Builder
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Pressure-Treated Wood Decking

For the lowest upfront cost with solid durability -- the most common decking material in the US.

Runner-up: Cedar Decking · Retake the quiz

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Why this fits you

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  • Upfront cost is your main priority.
  • You\'re comfortable with periodic sealing to maintain appearance.
  • You want the most widely available, easiest-to-source decking material.
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Pressure-treated wood decking is the most common and economical decking material in the US, chemically treated for rot and insect resistance. It requires more upkeep than composite (periodic sealing, occasional board replacement) to look its best and last, but its low material cost keeps it the default choice for many residential decks.

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How it compares

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OptionBest forMaintenanceCost
Pressure-Treated Wood DeckingBudget-conscious deckingAnnual/biannual sealing recommended$
Cedar DeckingNatural look, moderate durabilityPeriodic sealing for color retention$$
Composite DeckingLow maintenance, long-term durabilityOccasional washing only$$$
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Buying checklist

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  • Seal or stain periodically (roughly annually to every 2 years) to prevent graying, splintering, and moisture damage
  • Let new PT decking dry before the first sealing if it feels wet from the treatment process
  • Check for warping, splitting, or protruding fasteners periodically as part of routine deck maintenance
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Run the numbers

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Deck Board CalculatorHeader & Beam Load Calculator
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Frequently asked questions

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How often should I seal PT decking?

Roughly annually to every 2 years is common, though this varies by climate, sun exposure, and the specific sealant used.

Is PT decking splinter-prone?

It can become more splintery over time, especially without regular sealing -- this is one of the maintenance trade-offs compared to composite decking.

Why is PT decking the most popular decking material?

Its low material cost relative to composite or premium hardwoods, combined with wide availability, makes it the default choice for many residential deck projects.

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Other Deck Board Material Finder results

Cedar DeckingComposite Decking
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