How to Build a Composite Deck: A Homeowner's Guide

Thinking about adding a deck to your home this summer? A composite deck is one of the best investments you can make in your outdoor living space. It's low-maintenance, long-lasting, and ready to handle whatever PA weather throws at it. Here's a walkthrough of what's involved, so you know what to expect (and what to pick up) before you start.

Step 1: Plan Your Layout

Before you buy a single board, sketch out your deck's size, shape, and how it connects to your house. Think about:

• How you'll use the space (grilling, dining, lounging)

• Where the stairs will go

• Local permit requirements

• How much sun or shade the area gets

Tip: Bring your sketch or measurements into SBS. Our team can help you finalize a layout and put together a complete materials list.

Step 2: Build the Substructure

Every great composite deck starts with a solid frame underneath. You've got a few options depending on your budget and priorities:

Pressure-Treated (PT) Lumber

The traditional, budget-friendly choice. Pressure-treated lumber is treated to resist rot, insects, and moisture, making it a reliable standard for support posts, beams, joists, and ledger boards (where the deck attaches to your house).

Composite Substructure

Engineered to resist rot and moisture entirely, with no risk of warping, splitting, or insect damage over time. A great choice if you want a fully low-maintenance deck from the ground up.

Aluminum Substructure

Lightweight, extremely strong, and immune to rot, rust, and pests. A popular option for homeowners looking for a long-term, virtually maintenance-free frame.

Whichever you choose, a strong substructure is what keeps your deck safe and sturdy for decades. Don't cut corners here.

Step 3: Choose Your Composite Decking

This is the fun part. Composite decking comes in a wide range of colors, textures, and styles, from natural wood-grain looks to sleek modern tones. Unlike traditional wood, composite decking won't splinter, warp, or require yearly staining.

When choosing your decking, consider:

• Color: Lighter tones stay cooler underfoot in direct sunlight.

• Texture: Wood-grain vs. smooth finish.

• Board Style: Grooved (for hidden fasteners) vs. square edge.

Not sure which line is right for your home? Stop by, and we'll help you compare samples side by side.

Step 4: Pick Your Railing

Railing isn't just a safety requirement. It's also a major design decision. SBS carries three popular railing options:

Vinyl

Budget-friendly, low-maintenance, and available in classic white or tan finishes.

Aluminum

Sleek, modern, and ideal for maintaining unobstructed views.

Composite

Designed to match your decking for a seamless, high-end appearance.

Step 5: Fasten It All Together

The right fasteners make the difference between a deck that looks great today and one that holds up for years. Depending on your decking style, you may use:

• Hidden fastener systems for a clean, screw-free surface

• Color-matched composite screws

• Specialty fasteners for railing and stair components

Our team can help match the correct fastener system to whichever decking line you choose.

Step 6: Add Lighting

Don't skip this step. Deck lighting extends your outdoor season well into the evening while adding a beautiful finishing touch. Popular options include:

• Post cap lights

• Recessed stair lights

• Under-rail accent lighting

A well-lit deck isn't just attractive. It's also safer for nighttime use.

Ready to Get Started?

Building a composite deck is a project that pays off for years to come with more time enjoying your backyard and less time maintaining it.

Stop by Superior Builders Supply with your measurements, a sketch, or even just an idea, and our team will help you build a complete materials list from substructure to lighting.

Build it once. Enjoy it for decades.

Visit us at:

Superior Builders Supply
3439 Shermans Valley Rd
Loysville, PA 17047

Call: 717-789-2224

Superior Builders Supply — Your one-stop shop for your next project.