
Plastic is a versatile material that can be used for a variety of applications, including replacing a post. Whether it's a mailbox post, a fence post, or a support post for a structure, plastic offers a durable and cost-effective solution. In this discussion, we will explore the steps and strategies for changing a post with plastic, addressing common challenges such as dealing with concrete footings, ensuring structural stability, and achieving a secure and aesthetically pleasing result. By understanding the techniques and considerations involved, you will be equipped to tackle your own post replacement project with confidence and success.
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What You'll Learn

Plastic mailbox posts are extremely durable
Plastic mailbox posts are an excellent alternative to wooden and metal posts, offering a durable and easy-to-maintain option. They are typically crafted from sturdy plastic materials, giving them a clean look and feel, and making them highly affordable.
Plastic mailbox posts are also lightweight and simple to install. They don't need staining or painting, and they are perfect for budget-friendly upgrades. If you're looking for a maintenance-free option, plastic mailbox posts are a great choice. They are also a good option if you want a unique design, as plastic can be moulded into interesting colours and shapes, and can include features such as newspaper holders.
However, it's important to note that not all plastic mailbox posts are created equal. While most plastic mailbox posts are durable, some may not be as sturdy as others. It's always a good idea to check reviews and compare different products to find the best option for your needs.
Overall, plastic mailbox posts offer a durable, low-maintenance, and affordable option for homeowners. With their resistance to the elements and ability to withstand daily use, they are a great choice for anyone looking for a long-lasting mailbox post solution.
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How to repair a damaged mailbox post
A damaged mailbox post can be a frustrating eyesore, but it can be fixed. Here's a step-by-step guide on how to repair or replace a damaged mailbox post:
First, assess the damage. If the post is still standing, give it a wiggle to check its stability. If it's sturdy and the mailbox is intact, you may only need to screw the box back onto the post. Check the connection between the top of the post and the bottom of the mailbox. If the metal bracket that connects them is damaged, you'll need to replace it. Universal mounting brackets are available online and at home improvement stores.
If the post wobbles, it will need to be removed and replaced. If your post is made of metal and there are no holes for screws at the top, it's best to get a new post. Alternatively, you could solder the mailbox to the post, but this is not recommended. If the post is wooden, you can sand or saw off any damaged wood if you want to salvage it. Use 40- to 60-grit sandpaper to smooth the top of the post.
For significant damage, you may need to saw off the damaged top of the post. Remember that the bottom of the mailbox opening should stand 41 to 45 inches (100 to 110 cm) off the ground, according to US Post Office guidelines. If you're outside the US, check your national mail service's website for mailbox guidelines.
Now, let's discuss the removal of the old post and installation of the new one. If the post is not set in concrete, you're in luck. Nail or screw a piece of 2x4 or larger lumber to the post a few inches above the ground level. Then, use a large pry bar or a mason's bar to pry the post straight up, using another board or toolbox as a fulcrum.
If the post is set in concrete, you have a few options. You can try to dig the post out, but this can be challenging, especially if it's in a large clump of concrete. If you choose this option, consider digging the hole wider and moving the concrete aside, then installing the new post next to it. Alternatively, you can use a product like the E-Z Mender to straighten a leaning post without digging or using concrete. This product is a reinforcer made of black powder-coated 12-gauge steel. Place one bracket against the post base and hammer it in with a small sledgehammer. The manufacturer recommends using two E-Z Menders per post, one on each side.
If you're installing a new post, be sure to check for any utilities, customer-installed wires, or pipes in the area before digging. Call your local "Call Before You Dig" number to be safe. Also, check with your local government and homeowners' association to ensure you're allowed to support the mailbox post with concrete if that's your plan.
Finally, if you plan to make a custom mailbox, check with your postmaster or letter carrier to get approval before installing it. A poorly designed mailbox could halt your mail delivery.
With these tips, you can repair or replace your damaged mailbox post and improve the curb appeal of your home.
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How to replace a slide over-the-post mailbox post
To replace a slide over-the-post mailbox post, you will first need to remove the old post. If the old post is cemented into the ground, you will need to wiggle it and pull it out. If this does not work, you can try to nail or screw a piece of 2x4 or larger lumber to the post at or within a few inches of the ground level. Then, use a big pry bar or a mason's bar to pry the post straight up, using another board, toolbox, or similar as a fulcrum.
If the ground is frozen and you cannot remove the old post, you can buy a 5-gallon bucket and a couple of sacks of quickrete, set a new post in there, and mount your mailbox to it. You can then fix it properly later when the weather improves.
Once the old post is removed, you can install the new post. Mark a spot on your lawn 6 to 8 inches back from your curb. If you do not have a raised curb, contact your local postmaster for guidance. Dig a hole at this spot, ensuring that the depth is no more than 24 inches. Put a shovel full of gravel at the bottom of the hole. Insert the new mailbox post into the hole, ensuring that the height of the mailbox above the ground is around 42 inches. Check that the post is straight using a post level.
Finally, follow any manufacturer's instructions that came with your mailbox. You may need to screw the box support brackets to the post.
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How to make a wooden post removable from concrete
Making a wooden post removable from concrete can be challenging, but there are a few methods you can try. Here are some detailed steps to help you achieve this:
Using Plastic Wrapping
One approach is to wrap the wooden post in plastic before pouring the concrete. This method helps prevent the wood from sticking to the concrete. Ensure that you have enough plastic wrapping with some slack to allow for movement. After the concrete has set, you can remove the pole, take off the plastic, and reinsert the post. This method is straightforward, but the plastic can retain moisture, leading to faster rot.
Creating a Sleeve
Another option is to create a sleeve for the wooden post. You can use a steel post that is slightly larger than your wooden post and mount it in the concrete, leaving a few feet sticking out. Then, slide the wooden post into the steel sleeve until it reaches ground level. Fill the metal tube with material and ensure it has weep holes to prevent water retention. This method provides a strong and stable solution.
Using a Pole Holder
If you want to make a section of your fence removable, consider using a pole holder or a steel post bracket set in concrete. You can then attach the fence to the pole holder using removable bolts. When you need to open the fence, simply remove the bolts, swing the sections out, and you'll have a wide opening. This method is ideal if you need frequent access for equipment or vehicles.
Drilling and Chiselling
If you have a broken or damaged wooden post that needs replacement, you can try drilling out the post and using a chisel to remove the remaining wood. This method may require lengthening the handle of the chisel to reach the bottom of the hole. Be cautious, as this process can be time-consuming and physically demanding.
Digging Out the Concrete
In some cases, you may need to dig out the concrete and re-pour it to set a new post. This approach can be challenging and labour-intensive, especially if the concrete is set into a submerged wall. Ensure you check for any utilities beneath the area before digging.
Remember, when working with concrete and wooden posts, it's important to consider the structural integrity and safety of your project. Always wear appropriate protective gear and seek professional advice if you're unsure about any steps.
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How to replace an elevated post base
If you need to replace an elevated post base, there are a few methods you can try. Firstly, check if the post is cemented into the ground. If it is, you can try to wiggle it and pull it out. If it's not set in cement, you can nail or screw a piece of lumber to the post at ground level and use a pry bar to lift the post straight up.
If you're dealing with a concrete base, you have a few options. You can cut away the two side plates of the post base and replace them with retrofit post bases, fastening them to the concrete with concrete anchors. Alternatively, you can create a flat spot on the concrete for the new post base to sit on, or cut and pour a new mount that is flat. If you choose to cut and pour a new mount, be cautious when working with metal-to-concrete contact, as the concrete's natural acidity can cause degradation and rusting.
For a temporary fix, you can set a new post in a bucket with quick-setting concrete and mount your fixture to it, then replace it properly at a later date.
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Frequently asked questions
If you want to replace a wooden mailbox post with plastic, you can wrap the wood in plastic before pouring the concrete to prevent the wood from sticking to the concrete. Once the concrete has set, you can remove the pole, take off the plastic, and reinsert the pole.
Plastic mailbox posts are extremely durable and will outlast any wood or metal post. They are also a more affordable option than painted cedar mailbox posts.
Before installing a new mailbox post, it is important to call your local "Call Before You Dig" number to ensure there are no utilities beneath the desired location. It is also important to get approval from your local post office and ensure the post is accessible from the vehicle for curbside delivery.
If your plastic mailbox post is set in concrete, you can try to wiggle it and pull it out. If that doesn't work, you can nail or screw a piece of lumber to the post at ground level and use a pry bar to lift the post straight up.











































