75mm x 200mm Sawn Treated Timber C24 (8" x 3") 4.8m

URN: 4001164
£36.00ex. VAT £7.50 per Lnm
£36.00ex. VAT
£7.50 per Lnm
Project length
m
Based on your project length of m (inc. 10% wastage) - of these are required (actual length of m)

We recommend purchasing at least 10% extra to allow for cutting waste and site conditions.

C24 pressure-treated structural timber. Suitable for joists, beams, and general heavy-duty load-bearing construction. 200mm width with 4.8m length delivers long, stable spans with minimal joins.

Nationwide Delivery

Thu 18 Sep

Order by 2pm tomorrow
  • 1days
  • 9hrs
  • 45mins
  • 53secs

Delivery & Returns Info

Make 3 payments of £12.00 with PayPal Learn more
Make 3 payments of £12.00 with Klarna Learn more
Make 4 payments of £9.00 with Clearpay Learn more

Product Overview

C24 pressure-treated structural timber. Suitable for joists, beams, and general heavy-duty load-bearing construction. 200mm width with 4.8m length delivers long, stable spans with minimal joins.

URN: 4001164
£36.00ex. VAT

Delivery & Returns Information

How Our Delivery Works

We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.

Delivery Areas & Charges

Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.

Standard (Nationwide) Delivery

Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £100 £15 ex. VAT
Between £100 - £300 ex. VAT £10 ex. VAT
Over £300 ex. VAT FREE
Insulation, Plasterboard and Drylining Products
ORDER VALUE DELIVERY CHARGE
Under £350 £35 ex. VAT
Over £350 ex. VAT FREE
Screws & Fixings and Adhesives & Sealants
ORDER VALUE DELIVERY CHARGE
Under £50 £5 ex. VAT
Over £50 ex. VAT FREE

Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £400 £50 ex. VAT
Over £400 ex. VAT £35 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT

View Full Delivery Policy

Returns

We offer a 30 day returns policy on any faulty products.

View Full Returns Policy


Key Features

  • {{verified_user}} Graded to C24 standard - excellent tensile strength
  • {{rounded_corner}} Regularised with an eased edge
  • {{water_drop}} Tanalised timber pressure treated with Tanalith 'E' to prevent rot
  • {{dry}} Kiln dried to improve stability and straightness

Technical Specification

Technical Specification
Product:8" x 3"
Thickness:75mm
Width:200mm
Length:4.8m
Sales Unit:Length
Sales Unit Coverage:4.8m
Grade:C24

Product Overview

C24 strength-graded structural softwood, kiln-dried, regularised, and treated for demanding applications in floors, roofs, and primary beams.

200mm width in a 4.8m length provides beam-grade support in floors and roofs, while the 75mm thickness offers a broad bearing face for connectors and hangers, reducing bounce and flex over extended spans with minimal joints.

Features & Benefits

  • Strength grading (C24): Higher density and stiffness than C16, suitable for demanding load-bearing roles.
  • Factory applied preservative treatment: Protects timber in typical above-ground conditions when installed properly.
  • Kiln-dried & regularised: Helps control shrinkage and ensures even sizing for accurate work.
  • Eased edges: Safer handling and a cleaner finish with reduced splinter risk.
  • Sawn face texture: Provides a stable key for membranes, adhesives, and coatings.
  • Easy to work: Accepts nails, screws, bolts, and hangers; generous section helps avoid splitting near fixings.
  • Length - 4.8m: Minimises joints and increases stability in long runs.
  • 200mm width: Deep section with wide 75mm bearing face, maximising load capacity and connection strength.
  • Section size - 75mm x 200mm (8" x 3"): Large-format carcassing section for heavy structural applications.

Please Note: Finished sizes may arrive slightly under nominal (around 2mm less in thickness and 5mm less in width). Colour and finish vary naturally. Seal all cut ends and notches with end-grain preservative. Confirm span suitability before use.


Applications

  • Primary beams and trimmers: Wide 75mm face with deep 200mm section provides strong bearing and hanger capacity for heavier spans.
  • Roof members: Suitable for rafters, purlins, and joists in wide-span or load-intensive roofs.
  • Decking subframes: Forms durable ledgers and joists for high-traffic or expansive decking.
  • Structural framing and lintels: Robust section where depth and width combine for strength-critical applications.

Installation Guidance

  • Respect span limits: Only use within the limits of the specified grade.
  • Use rated fixings/connectors: Exterior-grade, corrosion-resistant hangers/bolts compatible with treated timber.
  • Re-seal all worked areas: End-grain treatment maintains protection.


Compliance & Performance

  • Strength grading: C24 to BS EN 14081 / EN 338.
  • Service conditions: Suitable for dry internal or covered external use (above ground).



Related Articles

Timber Sizing

C16 vs C24 – What’s The Difference?

Best Types of Building Wood For Construction

All Categories

Services