Hidden Decking Fastener BROfix (100 pcs) | Secret Fix Decking Clips

BROfix hidden decking fasteners let you lay a perfectly clean timber deck with no visible screws on the board face. Each clip slots into the groove of your decking board and is fixed to the joist below with a single screw, which is then covered by the next board. The result is a contemporary, unbroken deck surface that looks as good in five years as it does on day one.

Engineered from high-performance PA-6 polyamide, BROfix clips are built for year-round outdoor use in the UK. They have been tested through temperature cycles from -50°C to +80°C at 0–95% relative humidity — well beyond anything the British climate will throw at them.

Key Features

Why Choose Hidden Decking Fasteners?

Face-fixing timber decking is quick, but it leaves screw heads exposed on every board — and over time those fixings rust, stain, and become tripping hazards as board edges lift. BROfix solves all of that. By fixing through the groove, the clip is never visible, the board is held flat along its full length, and the automatic 6 mm gap allows the timber to expand and contract seasonally without cupping or buckling.

BROfix also reduces the total number of screws required by approximately half compared to conventional face-fixing. Fewer fixings means faster installation and a lower cost per square metre overall.

Compatible Timber Decking

BROfix is designed for use with grooved ThermoWood decking boards. Our ThermoWood Decking 26x117mm is fully compatible and is our recommended board to pair with BROfix clips. ThermoWood is thermally modified pine — dimensionally stable, low maintenance, and naturally resistant to moisture movement, making it an ideal match for a hidden fixing system.

If you have a question about board and clip compatibility, contact us before ordering and we will confirm.

Installation Guide

Download our full step-by-step installation guide for BROfix hidden decking fasteners as a PDF:

BROfix Hidden Decking Fasteners — Installation Guide (PDF)

The guide covers subframe preparation, clip spacing, screw specification, butt joint details, and finishing advice for ThermoWood decking.

Calculating How Many Clips You Need

BROfix clips are used at a rate of 2.2 per linear metre of board. To calculate your requirement: divide your deck area (m²) by your board face width (in metres) to get total linear metres, then multiply by 2.2. Always add a 10% wastage allowance. One pack of 300 clips covers approximately 136 linear metres of board run.

Not sure on quantities? Get in touch and we will work it out for you.

Frequently Asked Questions