Product Filters

  • Width

  • Thickness

Clear all

9x2 Timber Treated

(10 Products)

9x2 treated C24 timber outshines lower grades of timber (such as C16) in both its strength and durability; the higher the grade, the greater its strength and load-bearing. 9x2 C24 timber's composition comprises considerably fewer physical defects and knots. Applicable in structural applications such as flooring joists, roofing, as well as timber frame stud walls, our 9x2 sawn timber range is sawn to length and pressure-treated with chemicals to prevent insect attack and fungal decay.

Find Out More About Our Types of 9x2
Filter Products

What Is 9x2 Timber Used For?

9x2 carcassing timber is perfect for first-fix structural applications such as floor joists, roof joists, and timber framing construction. We recommend 9x2 carcassing timber for the following applications: 

  • Stud walls
  • Joists - roofs, floors and decking
  • Structural and general joinery applications
  • Timber framing construction

We stock 9x2 timber in lengths of 3.6m, 4.2m, 4.8m, 6m and 7.2m - these are also available for delivery in packs of 55.

It's not just building materials that we sell, however, we also stock a collection of accessories (such as wood screws) to help you get your project underway. 

Should you require a different size, we stock a huge range of sizes and metre lengths of timber to accommodate your project needs.

9x2 Timber Key Features

  • Stress graded to a superior C24 standard - excellent tensile strength
  • Particularly efficient at bearing heavy loads and spanning wider areas
  • Planed on all four sides with rounded edges - easy handling
  • High-density
  • Pressure treated with Tanalith 'E' - helps to prevent rot and protect from moisture 
  • Kiln dried to remove moisture 
  • FSC Certified - responsibly sourced 
  • Resists decay and insect attacks
  • The most durable timber option which offers extra stability, making it ideal for outdoor use
  • Thanks to its treated nature, treated timber is also low-maintenance
  • You won't have to spend time and money regularly maintaining it

Please note: timber is a natural product that may vary in colour, visual details, knots, grain, and texture.

9x2 Timber Sizing Explained

9x2 timber is most often measured in inches, which is an imperial measurement, though it is sometimes measured in metric and this is where millimetres (mm) come into play. 

The sizing of 9x2 timber is considered to be either:

  • Nominal Size: 47mm x 225mm
  • Finished Size: 45mm x 220mm

This slight discrepancy is accounted for by the way the timber is cut and prepared. The difference in the two sizes is minuscule and should not make a meaningful difference to your project. At Materials Market, we sell the finished size (45mm x 220mm). 

Frequently Asked 9x2 Questions

What Is A First-Fix Construction?

In construction, the term 'first-fix' essentially entails the construction work required to take a structure from its foundation to the stage of applying internal surfaces - typically the plastering of internal walls.

Can I Trust The Grade of The Timber If I Cannot See A Printed Mark? 

Only use timber that has a C16 or C24 mark visible! If you can't see the mark, then the quality is likely not up to par.

How Is Timber Sized On Materials Market?

Here at Materials Market, we list timber sizes in a couple of different ways. Timber lengths are usually referred to in imperial terms (inches rather than millimetres) and are characterised by their width and height. The most popular way we refer to size is in inches like '9 x 2' but we also use metric, which measures in millimeters (mm).

For 9 x 2 timber this would be 225mm x 50mm or 47mm x 225mm. We sell 47mm x 225mm on this website and this is used interchangeably with 7 x 2 to refer to the same size of product. The slight discrepancy of 3mm between 47mm (finished size) and 50mm (nominal size) just means that the finish at the ends is a lot more even and easier to work with.

Whatever your project, our site is proud to present a wide range of standard sizes for easy fitting; offering timber products that will be of interest to both new and seasoned builders.

Can You Burn Pressure-Treated Wood?

Under no circumstances should pressure-treated wood be set alight. The fumes released when pressure-treated wood burns can be harmful to health and the ash itself is toxic.

We advise against using pressure-treated wood for making any form of food preparation surface due to this toxicity.

Is It Possible To Paint 9x2 Timber C24?

Pressure-treated wood can be painted or stained, but to get a finish that lasts and looks premium, you'll first need to evaluate the moisture content of the timber.

Once you are sure the timber is dry, you can then move on to using a suitable primer and paint finish. We recommend using a latex primer with compatible exterior latex paint—water-based paint. Oil-based paints are not recommended.

How Should I Store 9x2 Treated Timber? 

C24 timber should be stored indoors away from direct sunlight to prevent timber shrinkage/expansion. 

Related Articles

How to Build a Timber Frame Extension

Timber Frame Construction

Timber Sizing

C16 vs C24 – What’s The Difference?

Best Types of Building Wood For Construction

All Categories