How to install composite decking - Step-by-step guide 2025

Installation guide for composite decking

Proper installation is the key to long-lasting composite decking.

Preparations

Plan carefully, order the right amount of material, and have the right tools available.

Step 1: Build the frame

Use pressure-treated wood joists or aluminum joists with 400mm c/c. Good drainage under the deck is critical.

Step 2: Lay out the decking

Start from a straight edge, use spacers for an even gap (5-8mm), cut boards with a saw blade for wood.

Step 3: Mounting

Use Megawood's mounting system - clips for invisible mounting or matching screws.

Step 4: Finishing

Install edging trim along the edges for a professional finish.

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