How To Install Your Deck

How to Install Your Composite Deck with CBG Decking — A Supply-Only Installation Guide

If you’re choosing CBG Decking’s supply-only service, you’re already halfway to transforming your outdoor space!

To help you get started, we’ve put together this simple, step-by-step installation guide to walk you through the process — whether you’re a tradesperson, builder, or DIY enthusiast.

🔹 STEP 1 — Prepare Your Site

Before you start, clear the area of any weeds, grass, or debris.

Make sure you have a level base, whether it’s soil, sand, gravel, or a concrete patio.

A firm, well-prepared base is key to a durable and stable deck.

🔹 STEP 2 — Plan Your Layout

Measure and mark your deck’s dimensions, and decide which direction you’d like your boards to run.

Tip: Boards typically look best when run perpendicular to your home.

Make sure you account for a slight slope (about 1%) to aid water runoff.

🔹 STEP 3 — Prepare Your Frame

Use treated timber or Composite joists to construct a strong frame to support your composite boards.

Your joists should be spaced about 400mm (16”) apart, center to center.

Make sure everything is level and square — a well-laid frame makes for a smoother installation.

🔹 STEP 4 — Installing Your Deck Boards

Start from one side and lay your first board against the edge.

Using hidden clips, secure it to the joists.

Repeat this process, adding boards one by one, while checking regularly to keep everything straight.

Tip: Composite expands and contracts with temperature, so leave a small gap (about 5–6mm) between boards to allow for movement and proper water drainage.

🔹 STEP 5 — Finish the Edges

Once your deck boards are in place, you can add finishing trims or fascias to cover the exposed edges.

This not only results in a polished, sophisticated look, but also protects the base from the elements.

🔹 STEP 6 — Frameless Glass Balustrade (Optional)

If you’re adding a frameless glass balustrade, follow these steps:

1️⃣ Measure and mark the positions for your posts or base rail.

2️⃣ Drill into your base and securely anchor the supports.

3️⃣ Lift in the toughened glass panels and clamp them in place.

4️⃣ Check that everything is straight and level before tightening. Or why not get in touch with our Sister Company CBG Balconies at www.glass-balcony.com

🔹 STEP 7 — Final Inspection

Once you’re finished, walk around your deck to check for:

✅ An even surface with consistent spacing.

✅ All screws and clips properly tightened.

✅ A safely anchored frame and balustrade.

✅ A nice, polished finish to be proud of.

Why Choose CBG Decking Supply-Only?

✅ We deliver high‑quality composite boards, components, and balustrade directly to you across the UK.

✅ Our products are designed for ease of installation, whether you’re a builder or a DIYer.

✅ Durable, low-maintenance, and stylish — a CBG Deck will last for years with minimal upkeep.

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