How and where to use guide
5.4Mtr X 47 X 175mm C24 Treated Regularised KD Carcassing Timber
Floor joists and suspended floors
This timber is commonly used for floor joists in residential construction. The 47 × 175mm cross-section provides good load-bearing capacity for standard domestic floor spans when installed at appropriate centres.
- Suitable for joist spacing of 400–600mm centres depending on span and load
- Install with adequate bearing on walls or beams—typically 50mm minimum
- Ensure proper ventilation beneath suspended timber floors to prevent moisture accumulation
Stud walls and partition framing
The regularised finish and consistent dimensions make this timber ideal for stud wall construction. C24 grading provides the strength needed for load-bearing internal and external walls.
- Use for vertical studs in timber-frame construction
- Suitable for both load-bearing and non-load-bearing partitions
- Install with appropriate bracing and fixing to meet building regulations
Roof battens and decking frames
The pressure-treated durability and structural strength make this timber suitable for roof battens and decking frame construction, including exposed outdoor applications.
- Use for roof battens supporting tiles or slates
- Suitable for decking frame joists and structural support
- Pressure treatment provides protection in exposed outdoor positions
Building regulations and standards
This timber meets current BS EN standards for structural softwood and is suitable for use in construction subject to compliance with local building regulations.
- Check span tables and load-bearing capacity against your specific application
- Ensure installation complies with current building regulations for your region
- Consult structural guidance for connection details and fixing requirements
Moisture and environmental conditions
Kiln-dried timber is supplied at controlled moisture content. Maintain appropriate storage and installation conditions to preserve structural performance.
- Protect from prolonged exposure to standing water or ground moisture
- Allow timber to acclimatise to site conditions before final installation where possible
- Pressure treatment provides rot resistance but does not eliminate the need for good building practice and ventilation