If you're looking to guarantee the longevity of your fence posts, it’s important to know why it happens and what you can do to prevent it.
The choices you make in terms of protecting and treating your fence posts can greatly impact the lifespan of your fence. Let’s break down all the frequently asked questions and some of our top tips on how to protect fence posts.
How long do fence posts last?
It can be hard to give a ballpark figure when it comes to how long fence posts should last, as it can depend on many factors. One key factor will bed whether the timber making the post has been treated or not.
Longevity of treated fence posts
Treated fence posts can last anywhere between 15 to 20 years when properly maintained.
Timber fence posts should typically be retreated every 2-3 years or as soon as you notice signs of wear and tear. This will significantly help prolong the life of your fence posts, and likely stretch them to the 20+ year mark.
Longevity of untreated fence posts
Untreated fence posts are much more vulnerable to natural elements like sun, snow, hail, and rain, which can lead to premature rotting.
In the UK, untreated wooden fence posts can last as little as a few months to a few years before showing signs of decay, depending largely on the conditions where you are, humidity levels, etc. Without proper treatment, wooden fence posts are at risk of fungal decay, insect infestation, and general deterioration over time.
Luckily, you’ll struggle to find fence posts that aren’t pre-treated for use.
Best ways to protect timber fence posts from rot
Wood Preservative
A high-quality wood preservative applied regularly will help A LOT. They prevent decay in wet and rainy climates like the UK. Look for treatments that are specifically formulated for outdoor timber structures and offer defence against fungi, insects, and moisture.
Pressure treated timber
Pressure-treated timber has been treated with preservatives under high pressure, making it more resilient to deterioration and decay. This kind of timber is commonly used for fence posts regardless.
Drainage
Proper drainage around the fence posts can help prevent water from accumulating at the base, which can speed up decay. Keep the area around the posts free of debris and vegetation to allow for sufficient airflow and drying.
Monitoring the posts’ condition
Regularly examining the fence posts for any indications of damage or decay and addressing them promptly can also help extend their lifespan.
How to apply fence post-treatment
Shop yourself a suitable fence post treatment. Before application, make sure the timber posts are clean and dry to allow the treatment to penetrate effectively. Start by applying the treatment evenly using a brush or a sprayer, making sure to cover all exposed surfaces thoroughly.
Don't forget to pay extra attention to the end grain of the posts, as this area is particularly susceptible to moisture penetration.
When applying the treatment, follow the manufacturer's instructions carefully regarding the number of coats needed and the drying times between applications. Some treatments may require multiple coats for best protection.
Allow sufficient time for the treatment to dry completely before installing the fence posts in the ground.
How often should you treat fence posts?
For best maintenance, it's recommended to treat your fence posts every 2-3 years.
In regions with harsher weather conditions, such as frequent rain or intense sunlight, you might need to treat your fence posts more often. Inspecting your fence posts annually is also a good practice to catch any signs of wear or damage early on.
Where to buy fence posts and treatment
For your maintenance needs, you can purchase fence posts and treatment products at MGM Timber. We are a reputable supplier that offers a variety of high-quality options to help protect and maintain your fence posts.
Our online fencing range includes fence slats, fence posts, fence rails, and more. Don’t skimp on quality supplies!