7x3 Timber Treated

(3 Products)

In the vast world of construction and joinery, not all timber is created equal. Our 7x3 carcassing timber, graded to stringent C24 standards, exemplifies the epitome of structural excellence. Ideal for robust undertakings such as flooring joists, roofing, and timber frame partitions, this timber assures both form and function. With noticeably fewer knots, it stands a cut above the rest, especially when juxtaposed with its counterparts like the C16 grade. Meticulously cut and subjected to rigorous pressure treatment, each timber piece promises unparalleled resistance against the persistent threats of fungi and insects.

Find Out More About Our Types of 7x3
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What Is 7x3 Timber Used For? 

  • Structural applications
  • Flooring
  • Roofing
  • Timber framing
  • General joinery applications

7x3 Structural Timber Key Features

  • Pressure-treated to resist rot, mould and decay.
  • Graded to a superior C24 standard - excellent tensile strength and stability.
  • Versatile application ensures project flexibility. 
  • Regularised for easy handling. 
  • Available in various lengths. 
  • 175mm x 75mm.

7x3 Timber Sizing Explained

7x3 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 7x3 timber is considered to be either:

  • Nominal Size: 75mm (Thickness) x 175mm (Width) 
  • Finished Size: (approximately) 70mm x 170mm

This slight discrepancy is accounted for by the way the timber is cut, kiln-dried 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.

Whether you're after timber posts or floor joists, find it all on our timber page. For any specific requirements, such as a specific length or total meterage, get in touch with our friendly customer service team. 

Frequently Asked 7x3 Questions

What Kind Of Wood Is Typically Used For 7x3 Carcassing Timber?

The 7x3 carcassing timber is commonly made from softwood species, known for its strength and versatility in various construction applications.

How Does Pressure Treatment Enhance 7x3 Timber's Durability?

Pressure treatment deeply infuses the wood with preservative agents, ensuring it is protected against rot, fungi, and insect attacks, which in turn extends the timber's life.

Is 7x3 Carcassing Timber Suitable For Outdoor Projects?

Yes, thanks to its pressure treatment, this timber is apt for outdoor projects as it possesses increased resistance to external elements, including weather changes and pests.

Can 7x3 Timber Be Cut Or Resized After Purchase?

Absolutely! 7x3 carcassing timber can be resized or cut as per project requirements. However, freshly cut ends might need a protective treatment to maintain the timber's resistance to decay.

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