A Trex deck does not have to be a plain rectangle in the backyard. Trex makes a whole system of parts, including boards, railings, lighting, and pergolas, that let you shape the space into something that fits how you actually live. The difference between a deck you walk across and a deck you spend your evenings on usually comes down to a handful of design choices.
This guide is a tour of those choices: the shape and layout, board patterns, railing styles, lighting, shade structures, and clever ways to use the space under an elevated deck. Take what fits your yard and your budget, and leave the rest. If you want even more to look through, our wider deck design gallery has ideas across every material and style.
We design and build these across Indianapolis, so a few ideas here are aimed at our seasons: shade for hot July afternoons, and built-in lighting for the long, dark, early-sunset stretch of an Indiana winter. Those two upgrades quietly double how much of the year you actually use the deck.
Start With the Shape
The single biggest design decision is the footprint. Before you think about color or railing, think about the shape that fits your yard and how you want to move through the space.
- Multi-level decks. Break a big deck into levels, one for dining and one for lounging, and they handle a sloped yard beautifully. See multi-level and elevated layouts for how the zones connect.
- Floating decks. A freestanding platform that is not attached to the house. Great for a fire-pit lounge, a shady garden corner, or a spot that catches the evening sun.
- Curved decks. Trex can be heat-bent with the Trex CustomCurve system, a professional technique, into flowing edges, benches, and curved stairs. Solid lines like Transcend and Select bend best.
- Wrap-around and L-shaped. Follow the shape of the house to connect a back door to a side entrance, or a kitchen to a patio.
- Small decks and balconies. A compact landing still makes a statement with the right color and railing. Small does not mean plain.
Board Patterns That Add Character
Which way the boards run, and whether you mix colors, changes the whole feel of the surface. A few patterns show up again and again because they simply work.
- Picture-frame border. A border board runs around the edge and frames the field inside it. It looks upscale and hides the cut ends of the field boards.
- Diagonal. Running boards at a 45-degree angle adds energy and movement. It uses more material and needs tighter joist spacing, 12 inches on center instead of 16.
- Herringbone. A high-end V pattern that takes extra cuts and framing, but the payoff is a floor that looks custom.
- Two-tone. Pair a dark border or field with a lighter shade. Since Trex offers a wide palette, this is an easy way to add a designer touch.
- Inlays and breaker boards. A contrasting strip or a single accent board can divide a long run or mark a transition between zones.
Railings: Your Biggest Style Statement
Nothing changes the look of a deck faster than the railing. Trex offers a full range, from warm and traditional to sleek and nearly invisible, across its Signature, Transcend, Select, and Enhance lines.
- Aluminum (Signature). Slim metal posts and balusters for a clean, modern frame. Black is the most popular choice, especially over a grey deck.
- Composite (Transcend, Select, Enhance). Rails that match your decking for a cohesive, classic look, with square composite or round aluminum balusters.
- Cable (Signature X-Series). Thin stainless cables keep the view wide open, a favorite for modern homes.
- Frameless glass (Signature X-Series). Tempered glass panels for an unbroken view, ideal by a pool or a scenic yard.
- Mesh or rod (Signature). A see-through, industrial edge.
- Cocktail rail. A flat deck board added on top of the rail, giving you a ledge for drinks and plates along the edge.
If you want to see combinations before you commit, the free Trex Deck Railing Designer lets you pair railings with deck colors and preview the result on screen.
Lighting for After Dark
Built-in lighting is one of the highest-value upgrades on this list. It makes the deck usable after sunset, adds safety on the steps, and gives the whole space a warm glow.
- Post cap lights. Soft light on top of each railing post, marking the edges of the deck.
- Stair and riser lights. Low lights built into the steps. This is the single best safety add-on.
- Rail and under-rail lighting. A warm wash of light along the railing for ambiance.
- Deck perimeter lights. Recessed lights set along the edge of the deck floor.
All of it runs on low-voltage LED, so it sips power. In Indianapolis, where the sun sets before dinner for months, lighting is what keeps a deck in use through the winter.
Shade and Shelter: Pergolas, Roofs, and Privacy
Adding structure overhead or to the side turns an open deck into an outdoor room.
- Pergola. A Trex Pergola adds shade and a sense of enclosure over a dining or lounge zone, without closing it in.
- Covered deck or roof. A full roof lets you use the deck rain or shine, which matters during an Indiana summer of afternoon storms.
- Privacy walls and screens. A composite screen blocks a neighbor’s sightline and can double as a backdrop for planters or a trellis.
- Gazebo. A defined, sheltered destination within a larger deck.
Put the Space Under the Deck to Work
If your deck is raised, there is a whole room’s worth of space underneath that most people waste.
A drainage system like Trex RainEscape installs troughs between the joists to catch and carry away rainwater, creating a dry ceiling below. That turns the area under the deck into a covered patio, a dry storage spot, or a shaded lounge. Add an under-deck ceiling and some lighting, and it becomes a genuine second outdoor room.
Built-Ins and Finishing Touches
The details are what make a deck feel designed rather than just assembled.
- Built-in benches. Seating around the edge, often with hidden storage underneath, that also frees up floor space.
- Planter boxes. Built-in planters soften the edges and add greenery without pots underfoot.
- A built-in table or bar. A permanent surface for dining or serving drinks.
- Fire features. A fire pit or fire table makes a popular centerpiece. Keep any flame feature on a protective pad and follow the maker’s clearances and your local fire rules, since heat and open flame need care on any deck surface.
The best part of building in all these features is that composite makes them easy to live with. There is no annual sanding or staining, so keeping the finished deck looking sharp takes very little once it is built.
See It Before You Build
Two things make the design part easier. First, use the free online tools. The Trex Deck Designer and Railing Designer let you try layouts, colors, and railing combinations on screen before you spend a dollar. Second, nothing beats seeing the real thing. Browse photos of real finished decks to see how colors and railings read in daylight, and get physical samples so you can judge them in your own yard.
As a local team, we can bring samples to your home, mock up a layout for your space, and show you what each choice looks like on a real Indianapolis deck.
Frequently Asked Questions
Can you make a curved Trex deck?
Yes. Trex boards can be heat-bent with the Trex CustomCurve system, which is a professional technique. Solid lines like Transcend and Select bend best, and the framing underneath has to follow the curve.
What are the most popular Trex deck patterns?
Picture-frame borders, 45-degree diagonal layouts, herringbone, and two-tone color combinations are the ones we get asked for most.
Can you put a pergola or roof on a Trex deck?
Yes. Trex makes a pergola, and covered or roofed decks are popular for year-round use. The framing just needs to be sized for the added weight.
What railing looks best with a Trex deck?
It depends on the vibe. Aluminum or cable for modern, composite for a matched classic look, and glass when you want to keep a view. The Trex Railing Designer lets you preview pairings.
What can I do with the space under a raised deck?
Add a drainage system like Trex RainEscape to keep it dry, then use it as a covered patio, a lounge, or storage.
Is a two-tone Trex deck worth it?
Yes. A contrasting border or inlay is a simple, high-end look, and it is easy to pull off since Trex comes in so many colors.
The Bottom Line
A Trex deck is really a blank canvas. The shape sets the foundation, the board pattern and railing set the style, lighting and structures set the mood, and the space underneath can become a whole second room. You do not need all of it. You need the few pieces that match how you will actually use the space.
The easiest way to start is to name the use first: a dining deck, a quiet lounge, a place to take in a view, a private retreat. Let that decide the shape and the railing, play with the free design tools, and get real samples in your own light before you commit.
Our favorite upgrades on Indianapolis decks are a pergola for July shade and built-in lighting for the dark half of the year. Both are the difference between a deck that sits empty for a season and one you use nearly year-round.