Trex Cost Calculator

Let's crunch some numbers

Just how much does a composite deck cost? It's easy to estimate the materials alone.
A few clicks and you have your answer.

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Total Area:
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Enter your deck dimensions: Show me some standard sizes

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Will your deck have railing? How we calculate railing

Do you already have a substructure? What is a substructure?

Calculate My Results

12' X 12' Deck design
(144 sq. ft.)

The perfect starter size, with plenty of room for an outdoor furniture set.

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12' X 14' Deck design
(168 sq. ft.)

A few more feet sets the scene with space for a dining table.

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12' X 16' Deck design
(192 sq. ft.)

Room enough to break your space into zones.

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12' X 18' Deck design
(216 sq. ft.)

Boost the ambiance with a grill or umbrella.

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12' X 20' Deck design
(240 sq. ft.)

Open up the layout, call the neighbors and let the party begin.

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3m X 3m Deck design
(9 sq. m.)

The perfect starter size, with plenty of room for an outdoor furniture set.

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3m X 4m Deck design
(12 sq. m.)

A few more meters sets the scene with space for a dining table.

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3m X 5m Deck design
(15 sq. m.)

Room enough to break your space into zones.

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3m X 6m Deck design
(18 sq. m.)

Boost the ambiance with a grill or umbrella.

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3m X 7m Deck design
(21 sq. m.)

Open up the layout, call the neighbors and let the party begin.

Select This Size

Calculating Railing

One side of your deck borders your home. To keep things simple, we approximate railing costs for the remaining sides.

A Substructure Is The Foundation Of Any Deck

It's everything you need below the surface—joists, posts, beams and support. That goes for second story decks, too.

Trex Elevations® Vs. Wood

Wood substructures split, warp and shift, leading to an uneven surface in the deck boards above. The dimensionally stable steel of Trex Elevations stays in place, giving you consistently stronger, straighter, safer and smarter decking than what wood can offer.

How to build an amazing deck

Start Planning Your Deck

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Let's build a deck

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