Intelligence Pick

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Best Decking AI pick

Chosen by an AI model from its trained knowledge, with its reasoning.

AI pick (line): Trex Enhance

Trex's entry capped-composite line gives the stain, fade and rot resistance of a capped board without the cost of premium PVC.

Not for: Renters or anyone covering an existing concrete patio, who should use interlocking deck tiles instead of boards that must be screwed to joists.

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AI picks by need

For premium, lightest-weight, most moisture-proof boards

TimberTech (brand)

TimberTech's PVC boards contain no wood fibre, so they hold up best near pools and in very wet sites.

Not for: Budget builds, or very hot sun-exposed decks where PVC heat and expansion are a concern.

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For interlocking tiles over an existing patio or balcony

NewTechWood (brand)

NewTechWood's composite snap-together tiles cover a flat hard surface with no tools or framing.

Not for: Uneven ground, or anyone building a raised structural deck.

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What the AI looks for in Decking

Capped vs uncapped composite
Choose boards with a polymer cap on the exposed faces. Uncapped wood-plastic boards absorb moisture, mold and stain far more easily.
Joist spacing
Most composite boards are rated for 16 in on center for square layouts and about 12 in for diagonal layouts. Always confirm the maker's span table. Over-spanned boards sag and can void the warranty.
Expansion gaps
Follow the manufacturer's end and side gapping for the install temperature. Composite and PVC change length with temperature, and wrong gaps cause buckling or wide gaps.
Fastening system
Match grooved-edge boards to the brand's hidden clips. Use square-edge boards with face screws designed for composite. Mismatched fasteners split edges, mushroom the surface or void the warranty.
Heat in full sun
Prefer lighter colors for decks in full sun. Dark composite and PVC can get uncomfortably hot underfoot.

Brands that matter

  • Trex: Largest composite brand, with tiers running from Enhance up to Transcend.
  • TimberTech: Composite and PVC boards from AZEK, strong at the premium end.
  • Fiberon: Capped composite that competes directly with Trex.
  • NewTechWood: Composite boards and snap-together deck tiles.

What to avoid

  • Uncapped first-generation composite boards
  • Standard wood deck screws used on composite
  • Deck tiles laid on soft or uneven soil

Questions

Can composite boards go on my existing wood joists?

Yes, if the joists are sound and spaced to the board's span rating. Re-gap or add blocking where spacing is too wide.

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