5x2 Treated Timber C24

If a piece of wood is going to be exposed to the elements, it's a no-brainer that it will require some form of protection. 5x2 treated timber (also referred to as 47x125) is a high-quality pressure-treated C24 graded timber which offers resistance to both insect and fungi attacks. We sell 47x125 timber in various lengths of 2.4m, 3m, 3.6m, 4.8m and 6m - all of which can be cut or sawn to length. 

    close

    Product filters

    • Width

      keyboard_arrow_right
    • Thickness

      keyboard_arrow_right

£18.10
inc VAT

Want a quotation?


£11.30
inc VAT

Want a quotation?


£13.57
inc VAT

Want a quotation?


£9.05
inc VAT

Want a quotation?

5x2 Pressure Treated Wood Applications


Thanks to the protective treatment and C24 grading of 5x2 treated timber, it is suitable for use in a variety of indoor and outdoor applications such as: 

  • Flooring
  • Roofing - rafters/joists in a loft floor
  • Walling
  • Decking joists - as it is able to bear heavier loads than ungraded timber (or that which is graded to a lower level such as C16.)
  • Carcassing timber in floor joists
  • Garden furniture and other outdoor projects 


What's The Difference Between Treated Timber & Sawn Timber?

Sawn timber is wood that has been cut to the required dimensions but hasn't yet been pressure treated and kiln dried. Pressure-treated timber, otherwise known as tanalised timber (due to the Tanalith E wood preservative that impregnates the wood) provides many benefits, such as resistance to the elements.

The goal of pressure treating wood is to force preservative chemicals deep into the timber's cellular structure. This pressure treatment process will often include copper and organic co-biocides, which help to repel both insects and moisture.

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


Timber Sizing Explained

Here at Materials Market, all of our timber is treated with preservatives, kiln dried, and then planed on all four sides to achieve smooth, eased edges that make for easy handling. Timber comes in various lengths and sizes, and is regularised to ensure that dimensions are kept consistent within ranges.

With a nominal size of 47mmx125mm, 5x2 timber actually has a finished size of 47mmx120mm, but this difference is so negligible that it is commonly just referred to as 47x125, or 5x2.

For more length options, click here. Longer lengths are also available on request. 

Frequently Asked Questions About 5x2 Timber

What is C24 Timber? 

The term "C24 grade" is used to describe a higher timber quality than that of C16. C24 timber is a premium choice that can support higher loads and wider spans. Only timber imported from areas where the weather conditions demand a slower growth rate (and hence a tighter grain) achieves a C24 grade.


Is It Possible To Paint 5x2 Treated Timber?

Yes, you can absolutely paint treated timber. However, it is a good idea to allow the wood to dry completely before adding any paint or primer to it. This can take up to a few weeks depending on the environmental conditions of the storage area. Heat and direct sunlight can cause the treated timber to warp instead of dry out and damper conditions can prolong the drying out period. 


Treated Timber Benefits

There is an abundance of timber types available on the market from sawn treated timber, untreated timber and sawn carcassing timber. No matter your project, it is essential to always use good quality treated timber as timber is usually located in places that are not easy to get to. This means we usually have no way of knowing if parts of the structure are under attack from insects or dampness.

With C24 graded timber, you won't need to pay mind to 'checking in' on the timber, as its pressure treatment renders it unaffected by both fungal and insect attack. Essentially meaning, it can fend for itself without you maintaining it. 

Here are just a handful of the benefits on offer with treated timber:  


Is 5x2 Treated Timber Environmentally Responsible?

All of the treated timber for sale on the Materials Market website is Forest Stewardship Council (FSC) or Programme for the Endorsement of Forest Certification (PEFC) certified, which means that our timber is responsibly sourced from environmentally responsible suppliers.