Terrace joist

Terrace Joists for Every Project: Softwood, Exotic Wood, or Aluminium

Terrace joists form the essential base of any outdoor deck structure. They ensure an even distribution of loads, providing stability and durability for the entire deck. At Plots Discount, discover a wide selection of wooden joists – pressure-treated Class 4 pine, naturally durable exotic wood, or aluminium – to meet all your construction or renovation needs for pedestal or conventional decks.

Why are joists indispensable for your deck’s strength?

Laid parallel or perpendicular to the deck boards, the joist serves as the structural support. Its selection depends on the decking material (wooden boards, composite, or grid decking) and the installation type (on adjustable pedestals, concrete slab, hard ground, etc.). Wooden terrace joists, such as Class 4 pressure-treated pine or exotic species, offer excellent resistance to weather, fungi, and wood-boring insects.

Available Wood Types and Treatments

On our site, you’ll find joists in European pine (Douglas or Scots pine) with Class 4 pressure treatment, ensuring high moisture resistance and long-lasting outdoor performance. Exotic wooden joists (Ipe, Cumaru, Bangkirai, etc.) are prized for their natural robustness, ideal for poolside areas or heavily exposed terraces.

Depending on your project, choose the length, thickness, and width accordingly: joists are generally available from 2 to 4 meters long, 38 to 50 mm thick, and 60 to 70 mm wide. These dimensions allow the structure to adapt to your constraints while respecting the recommended spacing for your deck boards.

Aluminium Joists: A Structural Alternative

For terraces requiring excellent dimensional stability and unmatched durability, aluminium joists are a solution worth considering, especially for composite decking. They provide resistance to aging and do not warp over time.

Plots Discount: Prices, Quality, and Advice for Your Terrace Joists

Large Stock & Rigorous Selection

Plots Discount guarantees a wide availability of wooden and aluminium terrace joists, stored under excellent conditions to ensure quality at delivery. Our joists come from sustainably managed forests, some PEFC-certified, allowing you to build a responsible deck.

Competitive Prices and Fast Delivery

Benefit from attractive prices across the range, with volume discounts and optimized logistics for fast delivery throughout France. Perfect for both building professionals and DIY enthusiasts.

Expert Advice on Installation and Choosing Terrace Joists

The Plots Discount team provides plenty of installation advice: spacing between joists depending on deck board type (generally 40–50 cm), fixing on adjustable pedestals, and selection criteria based on wood type, section, and necessary treatment. For a more durable structure, choosing thick and long joists helps avoid joints and maximizes overall stability.

Practical Tips for a Durable and Compliant Deck Structure

Follow Standards and Best Practices

Installing terrace joists requires compliance with DTU 51.4 standards (outdoor wood decking), ensuring optimal longevity. It is essential to leave a ventilation gap between the supporting slab and the joist and to use stainless-steel fasteners for a corrosion-free structure.

Choosing Joists According to Deck Material

For a softwood deck (pine, Douglas), prefer pressure-treated pine joists; for an exotic wood deck, match exotic wood joists to ensure uniform moisture behavior. Aluminium joists are particularly suitable for composite boards, providing a stable and straight support over time.

Optimizing Ventilation and Fastening

Using adjustable pedestals allows joists to be installed at the correct height to prevent moisture rise and compensate for uneven ground. Fix deck boards perpendicular to the joists with stainless-steel screws for long-lasting pull-out resistance.

Trust Plots Discount to purchase your terrace joists and complete any project: best value for money, wood species suitable for each use, and personalized advice for your future wooden or composite deck, on pedestals or slabs.