47x150mm (6x2) Kiln Dried Regularised C24 Timber Carcassing (4.2m/14ft)
C24 carcassing timber from Nottage Timber Merchants is a premium structural softwood, strength-graded to EN 338 C24 and ideal for joists, rafters, studwork and general framing. Each length is kiln-dried for stability and typically supplied with eased edges (PSE/E4E). Whilst it is considered a planed timber, most sawmills do not fully plane the boards, so they can appear similar to sawn timber but with a slightly smoother finish.
Available for local delivery across South Wales (SA, CF & NP postcodes) via TimberOnline.co.uk. For current availability and live options, please check the website.
Key Features & Benefits
- C24 structural grade – stronger and stiffer than C16 for longer spans.
- Kiln-dried for reduced movement and improved dimensional stability.
- Eased edges (PSE/E4E) for easier handling and a cleaner appearance.
- Machine graded & visually verified to EN 14081 for consistent quality.
- Easy to work – cuts, drills and fixes well on site.
Common Uses
- Floor and roof joists
- Internal stud partitions and wall plates
- Rafters, purlins and roof structures
- Structural framing, boxing-in and first-fix applications
- Lintel packers and general carcassing
Specification Summary
- Strength class: C24 (EN 338)
- Grading standard: EN 14081 (machine graded with visual verification)
- Moisture content: Kiln-dried (~18% at time of grading)
- Finish: Typically planed with eased edges (not fully smooth)
- Species/origin: Scandinavian softwood (redwood/whitewood)
- Treatment: Available untreated or pressure-treated to Use Class 2 (UC2). UC2 is not suitable for outdoor use; UC3 is the minimum for external applications.
- Certification: FSC®/PEFC available on request
Sizes & Lengths
Stocked in popular section sizes such as 38/47/63/75 mm thickness and 100–225 mm widths. Common stocked lengths include 2.4 m, 3.0 m, 3.6 m, 4.2 m, 4.8 m, and we also carry some lengths up to 6.0 m and occasionally 7.2 m. Finished sizes are slightly smaller after planing. For current availability, please check the website.
A wide variety of special sizes and longer lengths can be special-ordered to your specification, typically available for delivery within 10 working days.
Treatment & Use Class
- Untreated C24 – suitable for dry, internal structural applications (e.g., floor joists, studwork).
- Treated C24 (UC2) – suitable for internal or covered environments with occasional moisture. Do not use UC2 outdoors. For external use, specify UC3 minimum.
Sustainability
Responsibly sourced from well-managed forests. FSC® or PEFC certification available on request. Buying from Nottage Timber supports responsible forestry and local craftsmanship.
Handling & Storage
- Store flat on level, well-spaced bearers with good airflow.
- Keep timber covered and off the ground; avoid rapid moisture changes.
- Allow time to acclimatise to site conditions before installation.
Cutting Service
We offer a free cut-to-length service on C24 — your first 10 cuts are free; subsequent cuts are charged at an hourly rate. Provide your cutting list at checkout or email it when ordering. For current service availability, please check the website.
Why Choose C24 Over C16?
C24 provides higher strength and stiffness than C16, enabling longer spans, fewer intermediate supports, and greater design flexibility when specified by a competent designer.
Frequently Asked Questions
- Is C24 suitable for outdoor use?
- No. Treated C24 listed here is Use Class 2 and must not be used outdoors. For external use, specify at least UC3.
- What’s the difference between nominal and finished sizes?
- Nominal sizes are before planing; finished sizes are smaller after planing and easing the edges. Always verify finished dimensions if size-critical.
- Can I use C24 for load-bearing applications?
- Yes. C24 is a recognised structural grade suitable for most load-bearing floors, roofs and walls when installed to current Building Regulations.
- Do you cut to length?
- Yes — first 10 cuts free, then additional cuts at an hourly rate. Please check the website for details.
Order Online
Order securely at TimberOnline.co.uk for fast local delivery or collection across South Wales.
Need advice? Call 01656 745959.
Description
C24 carcassing timber from Nottage Timber Merchants is a premium structural softwood, strength-graded to EN 338 C24 and ideal for joists, rafters, studwork and general framing. Each length is kiln-dried for stability and typically supplied with eased edges (PSE/E4E). Whilst it is considered a planed timber, most sawmills do not fully plane the boards, so they can appear similar to sawn timber but with a slightly smoother finish.
Available for local delivery across South Wales (SA, CF & NP postcodes) via TimberOnline.co.uk. For current availability and live options, please check the website.
Key Features & Benefits
- C24 structural grade – stronger and stiffer than C16 for longer spans.
- Kiln-dried for reduced movement and improved dimensional stability.
- Eased edges (PSE/E4E) for easier handling and a cleaner appearance.
- Machine graded & visually verified to EN 14081 for consistent quality.
- Easy to work – cuts, drills and fixes well on site.
Common Uses
- Floor and roof joists
- Internal stud partitions and wall plates
- Rafters, purlins and roof structures
- Structural framing, boxing-in and first-fix applications
- Lintel packers and general carcassing
Specification Summary
- Strength class: C24 (EN 338)
- Grading standard: EN 14081 (machine graded with visual verification)
- Moisture content: Kiln-dried (~18% at time of grading)
- Finish: Typically planed with eased edges (not fully smooth)
- Species/origin: Scandinavian softwood (redwood/whitewood)
- Treatment: Available untreated or pressure-treated to Use Class 2 (UC2). UC2 is not suitable for outdoor use; UC3 is the minimum for external applications.
- Certification: FSC®/PEFC available on request
Sizes & Lengths
Stocked in popular section sizes such as 38/47/63/75 mm thickness and 100–225 mm widths. Common stocked lengths include 2.4 m, 3.0 m, 3.6 m, 4.2 m, 4.8 m, and we also carry some lengths up to 6.0 m and occasionally 7.2 m. Finished sizes are slightly smaller after planing. For current availability, please check the website.
A wide variety of special sizes and longer lengths can be special-ordered to your specification, typically available for delivery within 10 working days.
Treatment & Use Class
- Untreated C24 – suitable for dry, internal structural applications (e.g., floor joists, studwork).
- Treated C24 (UC2) – suitable for internal or covered environments with occasional moisture. Do not use UC2 outdoors. For external use, specify UC3 minimum.
Sustainability
Responsibly sourced from well-managed forests. FSC® or PEFC certification available on request. Buying from Nottage Timber supports responsible forestry and local craftsmanship.
Handling & Storage
- Store flat on level, well-spaced bearers with good airflow.
- Keep timber covered and off the ground; avoid rapid moisture changes.
- Allow time to acclimatise to site conditions before installation.
Cutting Service
We offer a free cut-to-length service on C24 — your first 10 cuts are free; subsequent cuts are charged at an hourly rate. Provide your cutting list at checkout or email it when ordering. For current service availability, please check the website.
Why Choose C24 Over C16?
C24 provides higher strength and stiffness than C16, enabling longer spans, fewer intermediate supports, and greater design flexibility when specified by a competent designer.
Frequently Asked Questions
- Is C24 suitable for outdoor use?
- No. Treated C24 listed here is Use Class 2 and must not be used outdoors. For external use, specify at least UC3.
- What’s the difference between nominal and finished sizes?
- Nominal sizes are before planing; finished sizes are smaller after planing and easing the edges. Always verify finished dimensions if size-critical.
- Can I use C24 for load-bearing applications?
- Yes. C24 is a recognised structural grade suitable for most load-bearing floors, roofs and walls when installed to current Building Regulations.
- Do you cut to length?
- Yes — first 10 cuts free, then additional cuts at an hourly rate. Please check the website for details.
Order Online
Order securely at TimberOnline.co.uk for fast local delivery or collection across South Wales.
Need advice? Call 01656 745959.