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6x2 Timber
6x2 timber is a nominal 150mm x 50mm section used for suitable floor, roof, framing and flat-roof applications, with regularised products often finished at 47mm x 150mm. Choose by actual dimensions, profile, strength grade, treatment, exposure and length, as the nominal size alone does not confirm structural suitability. Compare our live product specifications to select the correct timber, quantities and compatible fixings for your project.
47mm x 150mm to 0mm Treated Timber Firring (6" x 2")From £27.00 £22.50 As low as
47mm x 150mm C24 Treated Carcassing Timber (6" x 2")From £11.34 £9.45 As low as
Understanding 6x2 Timber
6x2 timber is the nominal trade name for a section measuring approximately six inches by two inches before drying and machining. When converting 6x2 timber in mm, the nominal equivalent is 150mm x 50mm timber, while a regularised product may have a finished section of 47 x 150 timber.
A listing described as 47x150 treated timber therefore identifies the finished dimensions and preservative treatment, not a different nominal timber size.
Machining creates a more consistent section but reduces the original dimensions, so always use the finished measurements when setting out work, matching existing timber or selecting compatible components.
Common Uses for 6x2 Timber
The depth of 6 by 2 timber makes it useful for substantial construction details where this section is specified. Suitable applications can include:
- Floor joists: Supporting floor structures at the specified span, spacing and loading.
- Floor trimmers: Forming designed structural details around suitable openings.
- Roof joists and rafters: Creating specified frameworks for pitched or flat roofs.
- Structural framing: Forming supporting wall frames and other designed timber structures.
- Decking subframes: Providing deeper supporting members where required by the deck design.
- Blocking and reinforcement: Creating noggins, supports and suitable strengthening details.
For flat-roof construction, tapered timber firrings, also called firring strips, are used to introduce a designed fall towards an outlet or drainage edge.
They sit above the supporting roof structure or decking and gradually reduce in depth to create the required slope. Firrings perform a fall-forming role and are not replacements for the structural joists beneath them.
Choosing the Right 6x2 Timber for Your Project
Start by confirming the required application, then check the specifications that determine whether the product is suitable:
- Straight or tapered profile: Match the shape to structural work or the required roof fall.
- Finished section: Use actual dimensions when matching connectors, insulation or existing construction.
- Strength grade: Select the structural classification stated in the project specification.
- Span and spacing: Follow the structural design, calculated loads and support arrangement.
- Treatment and exposure: Check that the declared treatment suits the intended environment.
- Length and quantity: Choose lengths that accommodate the cutting plan with manageable waste.
- Compatible fixings: Match connectors and fasteners to the finished section and installation conditions.
When choosing 6x2 treated timber, remember that preservative treatment improves durability against biological deterioration but does not make timber waterproof or establish its structural capacity. Strength grade, treatment and intended exposure each answer a different selection question and should be checked separately.
If the specification requires another section, explore our wider Timber by Size range rather than substituting dimensions without confirming their suitability.
Planning, Cutting and Fixing 6x2 Timber
Before ordering 6 x 2 timber, prepare a cutting list showing the quantity and finished length of each component. Group repeated cuts across suitable stock lengths, allowing for saw kerfs, end trimming, defects and site adjustments. Longer lengths may reduce unnecessary joints, but access, storage and safe handling must also be considered.
Inspect each piece before cutting, then store the timber flat, raised from the ground and supported evenly. Mark structural positions accurately before installation. For tapered firrings, identify the high and low ends so the completed fall runs towards the designed drainage point.
Connections must suit the actual timber dimensions, loads and support detail. Compare our Joist Hangers and Connectors, checking the hanger width, support depth, fastener specification and load capacity. After cutting treated timber, re-treat exposed surfaces where required by the product instructions.
Buy 6x2 Timber from MGN Builders Merchants
Compare current 6x2 timber prices, finished dimensions, specifications and available lengths in the product listings above. If you need help checking stock or arranging a larger order, our branch team can confirm the available purchasing, collection and delivery options.
Order online for delivery across London, Essex, Kent and the South East, or choose Click & Collect from our Romford, Woodford or Orpington branch.
FAQs
What is 6x2 timber in mm?
A direct conversion of 6 x 2 inches is 152.4mm x 50.8mm. In UK merchant sizing, 6x2 timber normally refers to a nominal 150mm x 50mm section, often finished at approximately 47mm x 150mm after machining. Use the finished measurements stated for the selected product when matching existing timber or compatible components.
How far can 6x2 timber span?
There is no single safe span for every 6x2 timber installation. The allowable distance depends on the finished section, strength grade, member spacing, loading, use, bearings, restraint and support conditions. The required span must therefore be established through the project’s structural design or suitable calculations.
How much is 6x2 timber?
The price of 6x2 timber depends on the selected product, specification and length. Prices and availability can change, so a fixed category-wide figure would quickly become inaccurate. Select the required option from the live product listings above to see its current price.
How much weight can a 6x2 timber take?
A safe load capacity cannot be calculated from the 6x2 name alone. Structural capacity differs for concentrated point loads and evenly distributed loads, while span, grade, orientation, spacing, supports and connections also affect performance. The permitted load must be calculated for the complete structural arrangement rather than stated as one universal kilogram figure.
What size joist hangers for 6x2 timber?
For timber finished at 47mm wide, choose a 47mm joist hanger or one whose specified fitting range includes 47mm. Do not select the hanger from the nominal 50mm dimension alone. Its depth, load capacity, supporting material and required fasteners must also suit the designed connection.
How much does 6x2 timber weigh?
The weight of 6x2 timber varies according to its length, timber species, moisture content and treatment. Longer or wetter pieces will weigh more than shorter, drier lengths with the same section. If weight is important for handling or transport, contact our branch team for guidance on the specific product selected.