Build a sturdy foundation for your decking project with the 40mm x 30mm Composite Deck Joist. These joists are essential for providing structural support to your composite decking boards, ensuring a durable and long-lasting outdoor space. Whether you're creating a deck in your garden, on a terrace, or around a pool, these joists play a crucial role in maintaining the stability of your decking installation.

Key Features:

1. Stable Foundation: The Composite Deck Joist (40mm x 30mm) offers a stable foundation for your decking, supporting the weight of the decking boards and any additional load.

2. Flat Surface Requirement: It is recommended to lay the joists on a solid, flat surface. Avoid uneven paving, sand, or grass, as these may cause movement that could lead to damage over time.

3. Optimal Joist Centers: Aim for joist centers no greater than 300mm for standard installations. If installing DuraDek boards on the diagonal, reduce the joist centers to 250mm. For installations above ground level, 250mm centers are recommended for added stability.

4. Double Joists for Butt Joints: Use double joists under butt joints to enhance support. Install one clip on each side of the butt joint and maintain an 8mm end-to-end gap for drainage and expansion.

5. Versatile Application: Suitable for various decking projects, including gardens, terraces, and around pools, the Composite Deck Joist provides versatility in its application.

6. Diagonal Installation Consideration: When working with diagonal installations, follow a center-out approach and maintain a 250mm joist center for optimal stability.

7. Above-Ground Level Installation: For installations above ground level, adhere to the recommended 250mm joist centers to ensure a secure and durable decking structure.

Installation Notes:

Ensure the joists are laid on a flat and stable surface.
Follow recommended joist centers based on your specific installation scenario.
Use double joists under butt joints for added support.
Consider the 8mm end-to-end gap for drainage and expansion.

Create a reliable foundation for your composite decking with the 40mm x 30mm Composite Deck Joist. Enjoy a robust structure for your outdoor living space.