3.6 100x47mm Joist C Grade

3.6m 100×47 c grade joist manufactured to provide a strong, reliable, and practical solution for structural construction and landscaping applications. Commonly used in decking subframes, flooring systems, and general building work, this joist offers dependable performance where strength and consistency are required.

Each joist measures approximately 100mm x 47mm in section and is supplied in a 3.6 metre length. This size is widely used across the construction and landscaping industry, making it a popular choice for both domestic and trade projects. The consistent dimensions allow for straightforward planning, accurate cutting, and compatibility with standard fixings and components.

This joist is graded as C Grade structural softwood. C Grade material is suitable for load-bearing applications where strength is the primary requirement. Natural characteristics such as knots, grain variation, and surface markings are expected and are typical of this grade. These features do not affect the structural capability of the joist when installed correctly.

100x47mm C Grade joists are most commonly used in decking subframes. When installed at appropriate centres and supported correctly, they provide a solid framework capable of supporting decking boards and regular foot traffic. The section size offers a good balance between strength and ease of handling, making it suitable for a wide range of decking layouts.

The 3.6m length is particularly useful for medium-sized projects, helping reduce the number of joins within a structure. Fewer joints can improve overall strength and simplify construction. Where required, joists can be cut down to suit bespoke designs and site-specific requirements.

In addition to decking subframes, 3.6m 100x47mm C Grade joists are commonly used in flooring structures for sheds, workshops, and garden buildings. They are also suitable for wall framing, stud work, and general construction tasks where a reliable structural component is needed.

C Grade joists are valued for their cost-effectiveness and strength. They provide a practical solution for structural work where appearance is not critical, such as areas that will be covered by decking boards, flooring, or cladding once installation is complete.

Correct installation is essential to ensure long-term performance. Joists should be installed on a firm and level base and fixed securely using appropriate structural fixings. For decking applications, joist spacing should be set according to the thickness of the decking boards being used to prevent excessive flex or movement.

Where used externally, it is important to ensure adequate airflow and drainage around the joists. Proper spacing and support help reduce moisture build-up and contribute to the longevity of the structure. Any cut ends should be treated where appropriate to maintain protection.

These joists are suitable for both domestic and trade use. They are commonly selected by builders, landscapers, and DIY customers undertaking decking projects, garden buildings, or general construction work. Their versatility makes them a core structural product for many outdoor and indoor applications.

For storage prior to installation, joists should be kept flat and supported evenly to minimise the risk of twisting or bowing. During installation, care should be taken to ensure joists are level and aligned accurately, as this will directly affect the quality and lifespan of the finished structure.

The 3.6m 100x47mm C Grade joist provides a dependable solution for projects that require structural strength and reliability. Its consistent sizing, practical length, and structural grade make it suitable for a wide range of construction and landscaping uses.

If you are looking for a strong and reliable joist suitable for decking subframes, flooring, or general construction work, the 3.6m 100x47mm C Grade joist offers the performance and durability required for professional-quality results.

If you need it cutting down to size, please contact us, we will be happy to help