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Composite · all 20 deck sizes

Composite Deck Railing Cost

Capped composite rail systems from Trex, TimberTech, Fiberon — matched-to-decking color, no maintenance, 25-year fade-and-stain warranty. The most popular railing on new builds since 2020.

$65-$110/lf installed25-50 yr fade-and-staincomposite
Best for

New builds with composite decking (matched aesthetics), low-maintenance priorities, mid-to-upper market resale positioning.

Watch-outs

Most brand systems lock you to that brand's posts + balusters. Mid-installation brand-mixing voids warranty. Top-tier composite railing can exceed cable rail cost — get bids both ways.

Pick your composite deck size

10×8
~38 lf
Installed: $2,470-$4,180
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10×10
~42 lf
Installed: $2,730-$4,620
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12×10
~44 lf
Installed: $2,860-$4,840
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12×12
~48 lf
Installed: $3,120-$5,280
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14×12
~50 lf
Installed: $3,250-$5,500
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16×12
~52 lf
Installed: $3,380-$5,720
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16×14
~56 lf
Installed: $3,640-$6,160
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20×12
~56 lf
Installed: $3,640-$6,160
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16×16
~60 lf
Installed: $3,900-$6,600
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20×14
~60 lf
Installed: $3,900-$6,600
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24×12
~60 lf
Installed: $3,900-$6,600
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20×16
~64 lf
Installed: $4,160-$7,040
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20×18
~68 lf
Installed: $4,420-$7,480
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24×16
~68 lf
Installed: $4,420-$7,480
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20×20
~72 lf
Installed: $4,680-$7,920
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24×20
~76 lf
Installed: $4,940-$8,360
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24×24
~84 lf
Installed: $5,460-$9,240
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30×20
~82 lf
Installed: $5,330-$9,020
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30×24
~90 lf
Installed: $5,850-$9,900
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30×30
~102 lf
Installed: $6,630-$11,220
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