Are you a homeowner looking for more information on C16 and C24 pressure treated timber? If so, you’ve come to the right place. Here, we’ll discuss the differences between these two types of timber, as well as their best applications. After reading this post, you’ll have all the knowledge you need to decide which type of timber is right for your project 

What Is Pressure Treated Timber? 

Before we dive into the specifics of C16 and C24 pressure treated timber, let’s quickly review what pressure treated timber is in general. Pressure treated wood is timber that has been infused with a preservative. This helps make it more resistant to decay and insect damage (such as termites). Pressure treating also increases its resistance against weathering, making it ideal for exterior projects like decks and fencing 

C16 vs. C24 Pressure Treated Timber 

Now that we know a bit about pressure-treated timber, let’s take a look at what sets C16 and C24 apart from one another. Both are classifications of pressure-treated timber based on their strength—also known as “strength grade.” The higher the number, the stronger the timber is; therefore, by this logic, C24 is stronger than C16.  

C16 is an ideal option for general construction projects such as gardens sheds, outdoor structures (like benches or arbors), or even furniture pieces built outdoors like picnic tables or garden chairs. On the other hand, because it is stronger than its counterpart, C24 is better suited for heavier tasks like building decks or supporting large structures like pergolas or gazebos. In some cases, you may find both classifications being used together in larger projects to provide extra support where needed while still saving money overall by using less expensive materials in other areas of construction 


Whether you need to build a garden shed or an outdoor deck structure, there is a type of pressure-treated timber that can meet your needs—C16 or C24 pressure treated timber! Now that you know about these two classifications of pressure-treated wood and their best uses cases, you can make an informed decision about which type to use for your DIY project. With all this new knowledge under your belt, you should be ready to tackle any home improvement project! Good luck!