When it comes to constructing durable and long-lasting structures, concrete is often the material of choice. One common practice is to use treated posts as support, but the question remains: can you pour concrete around treated posts?
In short, yes, you can pour concrete around treated posts. In fact, this method is often used in construction to create strong, stable foundations. However, there are several factors to consider to ensure the longevity and safety of your structure.

Understanding Treated Posts
Treated posts are wooden posts that have been preserved with chemicals to protect them from decay, insect damage, and rot. This treatment extends the lifespan of the wood, making it a suitable choice for outdoor structures and foundations.
Before pouring concrete around treated posts, it’s crucial to understand the type of treatment used. The most common types are pressure-treated and non-pressure-treated. Pressure-treated posts are more resistant to moisture and rot, making them a better choice for concrete applications.
Preparing the Post for Concrete
Before pouring concrete, the treated post should be prepared to ensure a strong bond with the concrete. This involves cleaning the post to remove any dirt, debris, or contaminants that could interfere with the bond.
Additionally, the post should be cut to the correct length, ensuring that it extends at least 8 inches above the finished grade to prevent water from wicking up the post and causing rot.

Pouring Concrete Around Treated Posts
When pouring concrete around treated posts, it’s important to create a solid, stable base. This can be achieved by using a form to shape the concrete and ensuring that the post is plumb and level.
As the concrete is poured, it’s important to vibrate the concrete to remove air pockets and ensure a strong, dense mix. Once the concrete has set, it’s important to allow it to cure properly before placing any weight on the structure.
Maintaining Concrete Around Treated Posts
Once the concrete has cured, it’s important to maintain it to ensure the longevity of the structure. This involves regularly inspecting the concrete for cracks or other signs of damage and addressing any issues promptly.

Additionally, it’s important to keep the area around the treated posts clear of debris and vegetation that could trap moisture and cause rot. Regularly applying a concrete sealer can also help to protect the concrete from moisture and other elements.
Signs of Trouble
While treated posts can last for many years, they can still experience damage over time. Some signs of trouble to watch for include:
- Cracking or crumbling of the concrete
- Warping or twisting of the treated post
- Visible signs of rot or decay on the treated post
- Sinking or settling of the concrete
When to Replace Treated Posts
If you notice any of the signs of trouble listed above, it may be time to replace the treated post. In general, it’s a good idea to replace treated posts every 20-30 years, even if they appear to be in good condition.
Replacing treated posts can be a complex task, so it’s often best to hire a professional to ensure that the job is done correctly. A professional can also help you to determine the best type of treated post and concrete mix for your specific application.

In conclusion, pouring concrete around treated posts can be a effective way to create strong, durable structures. However, it’s important to understand the process and to maintain the structure over time to ensure its longevity. By following the tips outlined above, you can create a structure that will last for many years to come.





















