Chevron 20×18 Deck Cost
A chevron board pattern on a 20×18 (360 sqft) deck costs $22,680-$36,360 in mid-tier composite — 26% over straight. Boards meeting at a 45° point along a center line, forming a V-pattern that runs the deck length. Sharper, more directional than herringbone.
5 finish tiers — chevron 20×18
National $/sqft × chevron pattern's 1.26× complexity × 360 sqft = total installed cost. 16% waste factor already applied to the material side. Multiply by your state's labor multiplier for a local figure.
What changes vs a straight 20×18
When to pick chevron
Long decks (3:1+ aspect ratio), decks pointing at a focal feature (pool, view, garden centerpiece), modern architecture.
The center V-joint is a wear point and water-collection seam. Plan for re-flashing at year 5-7 even on capped composite.
See this pattern in 3D before you commit
The Pattern Visualizer animation renders all 5 patterns live so you can rotate and compare. Useful for spousal sign-off and contractor conversations.
FAQ — chevron 20×18
How much does a chevron 20×18 deck cost in 2026?▾
A chevron pattern on a 20×18 (360 sqft) deck costs $11,520-$18,000 in pressure-treated, $22,680-$36,360 in mid-tier composite, $34,200-$50,040 in luxury composite/PVC. That's 26% over straight-pattern baseline — about $6,120 extra at mid composite.
What's the waste factor on a chevron pattern?▾
16% — vs 7% for straight boards. On a 20×18 deck that means ordering 648 linear feet of decking (vs 594 for straight). The extra 54 lf is the difference between order quantity and installed quantity, ending up as offcuts and short pieces.
Does a chevron pattern affect joist spacing?▾
Yes — 12″ o.c. + center sleeper-beam to hold the v joint. The denser joist spacing supports the pattern visually and structurally. Plan ~20-25% more joists than a straight install would require, plus the matching extra hangers + footings if framing spans need to shorten.
Will my deck warranty cover chevron?▾
Chevron is a specialty pattern — requires precision miter cuts on every board pair. Most brands list it under 'custom installation' (warranty negotiated case-by-case). AZEK and Trex Signature are most permissive.
Is chevron the right pattern for a 20×18 deck?▾
Best for: Long decks (3:1+ aspect ratio), decks pointing at a focal feature (pool, view, garden centerpiece), modern architecture. Watch-outs: The center V-joint is a wear point and water-collection seam. Plan for re-flashing at year 5-7 even on capped composite. At 360 sqft, chevron is well-balanced — fits the typical sweet spot for this pattern.