3mm Kwila Deck Fastener

Precision-Spaced Decking Made Easy

Achieve a flawless, professional finish on your Kwila deck with our 3mm Fastener — the hidden fastener engineered specifically for use with Shadowdeck's Kwila pre-grooved timber.

Designed to slot seamlessly into the groove of each board, this fastener holds your decking firmly in place while maintaining a consistent 3mm gap between boards — the ideal spacing for drainage, airflow, and natural timber movement.

Key Features

• Perfect 3mm board spacing — built-in spacing control for a uniform, clean look across your entire deck
• Hidden fastening system — no visible nails or screws on the surface for a sleek, nail-free finish
• Engineered for Kwila pre-grooved timber — designed to work in tandem with Shadowdeck's grooved boards for a secure, reliable fit
• Promotes longevity — consistent gaps allow water to drain freely and air to circulate, reducing moisture build-up and extending the life of your deck
• DIY-friendly — straightforward installation that saves time and delivers trade-quality results

Compatible With

Shadowdeck Kwila pre-grooved decking timber.

Installation

Insert the fastener into the groove of the first board, fix to the joist, then slot the next board in — repeat along the length of your deck. Refer to our Installation Guide for full step-by-step instructions.