50 x 50 x 2400mm Plastic Decking Joist

The 50 x 50 x 2400mm Plastic Decking Joist is a long-lasting, rot-proof alternative to timber joists, designed to support composite decking in domestic and commercial projects. Manufactured from 100% recycled plastic, these plastic decking joists are highly durable, maintenance-free, and resistant to moisture, decay, and insect damage.

Suitable for installation directly onto a solid base or as part of a raised decking system using pedestals, these plastic joists for decking provide a stable and consistent subframe for any low-profile or ground-level deck. They are easy to cut and fix using standard tools, and their uniform shape ensures quick, straightforward installation.

Ideal for environments where timber would deteriorate over time, this product is backed by a 25-year manufacturer’s warranty, offering peace of mind for long-term use.

Key Features

• 50 x 50 x 2400mm Plastic Decking Joist
• Made from 100% recycled plastic
• Resistant to rot, splitting, moisture, frost, and insects
• Ideal for use under composite decking systems
• Suitable for fixed or pedestal-based installations
• Maintenance-free with no treatment required
• Easy to work with using standard cutting tools
• 25-year warranty included

Where the 50 x 50 x 2400mm Plastic Decking Joist Is Used

• Ground-level or raised composite decking builds
• Garden patios and terraces
• Rooftop decking installations
• Commercial outdoor spaces with high foot traffic
• Damp or exposed environments where timber fails
• Sustainable decking projects needing eco-friendly support systems