C24 Graded Treated Timber Post 4″ x 4″ (100x100mm) 3.0m

MDM Timber C24 Graded Treated Timber Post 4″ x 4″ (100x100mm) 3.0m is a premium structural softwood post, strength-graded to C24 and pressure-treated for long-term durability in outdoor and construction environments. Designed for trade professionals and serious DIYers alike, this 4×4 post delivers superior load-bearing performance over standard C16 timber, making it the go-to choice for demanding structural and landscaping applications across the UK.

Key Features and Specifications

• Nominal dimensions: 100mm × 100mm (4″ × 4″) × 3.0m length
• Actual finished size: approximately 95mm × 95mm (regularised)
• Strength grade: C24 — graded to European Standard EN14081-2
• Species: Softwood (Scandinavian whitewood spruce / redwood)
• Treatment: Pressure-treated preservative — protects against rot, fungal decay, and insect attack
• Kiln-dried: Reduced moisture content for improved dimensional stability and reduced warping
• Finish: Sawn and regularised with eased edges for consistent sizing and easier handling
• Certification: PEFC certified — sustainably sourced timber
• Supplied by: MDM Timber Limited

Applications

• Fence posts and gate supports — domestic, commercial, and agricultural
• Decking substructure posts and pergola uprights
• Structural framing, stud walls, and load-bearing posts
• Garden buildings, summerhouses, and outbuilding frames
• Retaining structures and landscaping projects
• General construction carcassing where C24 is specified

Why Choose This Product

C24 grading means this post meets a minimum strength of 24 N/mm², offering significantly higher load-bearing capacity and fewer natural defects than C16 timber. The pressure treatment guards against rot, decay, and insect infestation, ensuring reliable long-term performance even in exposed outdoor conditions. The regularised, kiln-dried finish means consistent sizing on site — less waste, faster installation, and a cleaner result. Supplied by MDM Timber Limited, a trusted name in structural timber for the UK trade.

Delivery in and Around London

MDM Timber delivers this C24 treated timber post to London boroughs including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also supply to the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities and bulk orders are welcome — contact us for volume pricing and availability.