Description
Our 4 x 3 (100mm x 75mm) Pressure Treated Joists are the ideal choice for any structural or joinery project that demands strength, durability, and long-lasting performance. Engineered to C24 strength grade and kiln-dried for dimensional stability, these joists are perfect for a wide range of applications, including roofing, decking, flooring, and general construction. Pressure treated for enhanced protection against rot, decay, and insect attack, these joists are designed to withstand harsh weather conditions and provide a reliable, high-quality finish for indoor and outdoor projects.
Key Features:
- C24 Strength Graded: These joists are C24 graded, meaning they meet strict standards for strength and durability, making them suitable for load-bearing and structural applications such as roof joists, decking frames, and flooring.
- Pressure Treated for Longevity: Each joist undergoes a high-pressure treatment process to protect against rot, decay, and insect infestation, ensuring long-lasting performance in both indoor and outdoor environments.
- Kiln-Dried for Stability: Kiln-drying significantly reduces the moisture content of the timber, improving stability and minimizing the risk of warping, shrinking, or twisting over time. This ensures a consistent and stable material that’s easy to work with.
- Ideal for Heavy-Duty Applications: The robust 4 x 3 profile offers the strength required for load-bearing tasks, such as supporting flooring, roofing structures, and decking, making it a reliable choice for construction projects.
- Sustainably Sourced: Our timber is responsibly sourced from PEFC or FSC Certified forests, ensuring it meets the highest environmental standards. This means you can build with confidence, knowing that your timber is ethically produced and sustainable.
Benefits:
- Strength and Reliability: With its C24 grading, this timber is certified to handle heavy loads and demanding structural tasks, providing peace of mind and long-term stability.
- Long-Lasting Protection: The pressure treatment process ensures that the timber remains resistant to decay and insect damage, even in exposed outdoor conditions, extending the lifespan of your project.
- Reduced Maintenance: Thanks to the pressure treatment and kiln-drying process, these joists require minimal maintenance over time, making them a cost-effective option for long-term construction.
- Versatile Application: Suitable for a wide range of uses, from creating decking frames and roof joists to supporting flooring and other structural elements in both commercial and residential builds.
- Environmentally Friendly: Sourced from sustainable forests, these joists contribute to environmentally responsible building practices, reducing your project’s carbon footprint.
Applications:
- Roof Joists: C24 strength graded and pressure treated, these joists are ideal for creating strong and durable roof structures, capable of supporting the necessary load over time.
- Decking Framework: Perfect for constructing the sub-frame of decking projects, providing a solid foundation that resists weather and insect damage.
- Flooring Supports: These joists are commonly used to support floorboards in both residential and commercial projects, ensuring a stable, long-lasting floor structure.
- General Construction: Suitable for various other construction tasks, including stud walls, garden structures, and more, where strength and durability are critical.
Choose our 4 x 3 Pressure Treated Joists for a strong, durable, and environmentally friendly solution for all your structural and joinery needs. Whether you’re working on roofing, flooring, or decking, these joists deliver the quality and reliability you need for a long-lasting project.






