Treated Structural Timber – 47 mm × 100 mm (approx. 4″ × 2″), 4.8 m
This 47 × 100 mm structural timber, graded C24 and with a length of 4.8 m, is kiln-dried, pressure-treated, and regularised to provide reliable strength, durability, and long-term stability. The preservative treatment protects against rot, fungal decay, and insect damage, making it suitable for structural framing and outdoor or partially exposed applications. With a consistent, planed finish and eased edges, the timber is ready for cutting, fixing, and installation with minimal preparation.
Key Specifications:
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Section Size: 47 mm × 100 mm (nominal)
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Length: 4.8 m
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Structural Grade: C24
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Treatment: Pressure-treated for rot, decay, and insect resistance
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Finish: Kiln-dried, planed, and regularised with eased edges
Features & Benefits:
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High load-bearing capacity thanks to C24 grading — suitable for structural framing, joists, rafters, and load-bearing builds
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Pressure treatment and kiln-drying for enhanced durability and resistance to environmental degradation
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Regularised, planed finish for accurate dimensions and improved handling
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Versatile timber that can be used for flooring joists, decking sub-frames, roof rafters, stud walls, garden structures, and general construction
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Reduces the need for joints in long runs, saving time and improving structural integrity
Typical Applications:
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Floor and ceiling joists, roof rafters
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Timber frame walls and studwork
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Decking frames and sub-structures
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Garden buildings, sheds, and outbuildings
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Structural carpentry for extensions or renovations
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Outdoor projects where treated structural timber is required








