Here's What Happens When You Seal Bottom Of Wood Fence Post
To Wrap or Not to Wrap? Protecting Your Fence Posts from Moisture
When it comes to building a fence, the longevity of your posts is crucial. After all, they're the foundation that supports the entire structure. One common point of contention among DIYers is whether or not to wrap the bottom of wood fence posts before burying them. This seemingly simple question has sparked many debates, so let's break down the potential benefits and drawbacks to help you make an informed decision.
The Case for Wrapping
Moisture Barrier: The primary reason for wrapping is to create a barrier against moisture. Soil can hold a significant amount of water, and direct contact can lead to rot, decay, and ultimately, premature failure of your fence posts. A wrap can help to slow down this process.
Pest Deterrent: Some wraps, particularly those with a protective coating, can deter wood-boring insects like termites and carpenter ants. This adds another layer of defense against potential damage.
Chemical Protection: In some cases, a wrap can help to protect the post from chemicals in the soil or from treatments applied to the surrounding lawn. This is particularly relevant if you use herbicides or pesticides near your fence line.
The Case Against Wrapping
Trapped Moisture: While designed to keep moisture out, a wrap can sometimes trap moisture in if water gets past the barrier. This can create a damp environment that accelerates rot, defeating the wrap's purpose.
Inhibited "Breathing": Wood is a porous material, and some argue that wrapping prevents it from "breathing" properly. This can disrupt the natural drying process and potentially lead to faster decay.
Installation Challenges: Properly installing a wrap can be tricky. It needs to be secured tightly to prevent water from seeping in, and any gaps or tears can compromise its effectiveness.
Types of Wraps
If you decide to wrap your fence posts, you have a few options:
Plastic Sheeting: This is a common and affordable option, but it can be prone to tears and may not be the most effective long-term solution.
Tar Paper: Another traditional choice, tar paper provides a decent moisture barrier but can be messy to work with.
Commercial Post Wraps: These are specifically designed for fence posts and often come with features like adhesive backing and protective coatings. They tend to be more durable and easier to install but are also more expensive.
The Verdict
Whether or not to wrap your fence posts is a decision that depends on various factors, including your climate, soil conditions, the type of wood used, and your personal preferences.
Here are some things to consider:
Wood Type: Pressure-treated wood is already designed to resist rot and decay, so wrapping might be less critical.
Climate: In areas with high rainfall or humidity, wrapping might offer more significant benefits.
Soil Drainage: If your soil drains poorly, wrapping can help to mitigate the risk of excessive moisture.
Ultimately, the best approach is to weigh the pros and cons carefully and choose the solution that best suits your specific needs. If you're unsure, consult with a local fencing professional for expert advice.
