What is Treated Timber?

What is Treated Timber?

Treated Timber

In the world of construction, landscaping and even DIY home projects, treated timber is a commonly used material. 

But what exactly is treated timber, and why is it so crucial for your outdoor projects? 

In this post, we’ll explore treated timber, looking at its treatment process, types and what you need to consider when choosing it for your projects.

The Treatment Process

Treated timber has undergone a process to enhance its durability and resistance to decay, insects and adverse weather conditions. This typically involves infusing the wood with preservative chemicals under high pressure. The aim? To extend its life and usability, especially in environments prone to moisture and termite attack. The process not only helps in maintaining the structural integrity of the wood but also ensures that it remains a reliable material for years to come.

Types of Treated Timber

There are several types of treated timber, each suited to different uses and environments. For instance, CCA (chromated copper arsenate) treated wood is known for its resistance to rot and pests and is often used in outdoor settings. Meanwhile, ACQ (alkaline copper quaternary) treated timber offers a less toxic alternative, providing similar levels of protection without the use of arsenic. The choice of treatment depends on the intended use of the timber, whether for residential decks, playgrounds or commercial landscaping.

Safety and Environmental Considerations

While treated timber is essential for ensuring the longevity of wood products, it’s important to handle it with care. Safety measures include wearing gloves and masks when cutting or sanding treated wood to avoid inhaling dust or having direct skin contact with the chemicals. Moreover, the environmental impact of using chemically treated wood is a consideration for many. Fortunately, advances in treatment technologies have led to more eco-friendly options, reducing the footprint of treated timber on the environment.

Choosing the Right Treated Timber for Your Project

Selecting the right type of treated timber for your project is crucial. Consider the specific needs of your project, such as the level of exposure to elements and the likelihood of insect infestation..


Understanding treated timber is the first step in ensuring the success and longevity of your outdoor projects. With its ability to resist decay, insects and weather, treated timber is an invaluable material for any project exposed to the elements.

Looking for high-quality treated timber for your next project? MSS Timber offers a wide selection of treated timber, backed by over 40 years of expertise and a commitment to quality and customer satisfaction.

Visit us to find the perfect timber for your needs and get your project started on the right foot.