
Installing a plastic picket fence is a great way to boost your property's curb appeal, define your boundaries, and add a touch of charm. Before you begin, it's important to plan the installation, measure the area, and check local planning laws and regulations. You'll also want to notify your neighbours about your project to avoid any disputes. When you're ready to start, clear the area of rocks, roots, and debris, then mark out your fence line. Use a post-hole digger or electric auger to dig holes for your posts, placing them about 6 to 8 feet apart. Set the posts in the holes, ensuring they're straight and secure with concrete. Attach horizontal rails or stringers between the posts, and then secure the individual pickets or pre-built panels to the structure. Finally, consider painting or staining your fence for a cohesive look and added protection.
| Characteristics | Values |
|---|---|
| Planning | Measure the area, check local planning laws and regulations, and map out the fence line. |
| Materials | Plastic picket fence panels, posts, concrete, gravel, screws, nails, paint or stain, post caps. |
| Tools | Shovel, posthole digger, digging bar, tarp, spirit level, drill, nail gun, safety gear (respirator, eye protection, hearing protection). |
| Post Placement | Locate the position for the first post, dig a hole with a diameter of 10 inches and a depth of 32 inches (or 1/3 the length of the post), add gravel for drainage, and place the post in the hole. |
| Post Installation | Ensure posts are level and straight, with a height of 2-5 inches above the ground, and secure with concrete, sloping it away from the post to prevent water pooling. |
| Panel Installation | Attach panels to posts, ensuring consistent picket height and spacing, and following the contour of the ground for slopes. |
| Gate Installation | Measure the width of the gate, dig holes for the gate posts, and set the posts, checking alignment, level, and distance between posts. |
| Finishing Touches | Paint or stain the fence (waiting at least one to two months after installation), and add decorative post caps. |
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What You'll Learn

Planning and preparation
Next, clear the area of rocks, roots, and debris, then mark out your fence line. Drive stakes into the ground at each corner of the perimeter and run a line or string between them to ensure your fence is straight. You can also use batter boards to create a square layout. Once the ground is clear and staked out, level the terrain—an uneven fence will eventually lead to damage and look untidy.
Before you begin installation, gather all the tools and materials you'll need. Notify your neighbours about your project to ensure there are no disputes and that they are aware of any disruptions.
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Digging post holes
Before you start digging, it's important to prepare the site. Clear the area of rocks, roots, and debris, and mark out your fence line. Drive stakes into the ground at each corner of the perimeter and run a string or twine between them to ensure your fence is straight.
When digging the holes, it's essential to maintain the correct diameter and depth. The diameter of the hole should be consistent throughout its depth. Use a post-hole digger or an electric auger to dig holes with a diameter of about 10 inches. If you encounter any rocks or roots, use a digging bar to break them up and cut through them. Discard any rocks larger than a billiard ball to ensure your post sets properly.
Once you've dug the holes, pour about 3 inches of gravel into the base of each hole for drainage. This will prevent rainwater from causing fence post rot.
If you're installing a fence on a slope, you can adjust the height or angle of your posts and pickets to achieve a more level look. Hold a string line from post to post to guide you in making adjustments.
Check local planning laws and building codes to ensure you comply with any regulations regarding fence height and post depth.
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Setting posts and rails
Preparing the Site
Before setting the posts, it is essential to prepare the site. Start by clearing the area of any rocks, roots, and debris. Then, mark out the fence line by driving stakes into the ground at each corner of the perimeter. Run a string or twine between the stakes to ensure a straight and level fence line.
Digging the Post Holes
The depth and diameter of the post holes are critical to the stability of your fence. Typically, the holes should be around one-third of the length of the post. For a standard fence post, dig a hole with a depth of 32 inches and a diameter of 10 inches. Use a post-hole digger or an electric auger for this task. If you encounter rocks or roots, use a digging bar to break them up and discard any rocks larger than a billiard ball.
Setting the Posts
Place the post in the hole, ensuring it is plumb and adjusting its height so that the bottom of the pickets will be 2 to 5 inches above the ground. Check that the front face of the post touches the mason's line. For mortised posts, adjust the height and slide the rails into the mortises. Wiggle the post side-to-side to achieve equal picket-to-post spacing. Repeat this process for each post along your fence line.
Filling the Holes
Once the posts are in position, fill the holes with concrete. Pour the concrete around the post, leaving a few inches at the top. Slope the concrete away from the post to allow for water runoff and prevent wood rot. You can also add gravel at the base of the hole for better drainage.
Installing the Rails
After the concrete has cured, install the horizontal rails or stringers between the posts. Pre-drill screw holes at the ends of the rails to prevent splitting the wood. Secure the rails to the posts using screws or nails. For a component fence, attach the stringers following the contour of the ground. Stagger the joints of the middle and bottom stringers for added strength.
Attaching the Pickets
Finally, attach the pickets to the rails and posts. Cut the pickets to size and secure them with screws or nails, ensuring even spacing. The pickets should be installed with a gap of about 2.5 inches between them and sit approximately 1 inch off the ground.
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Attaching pickets
Attaching the pickets is a crucial step in installing a picket fence. Once the posts are in place and the concrete has cured, you can begin this process.
First, measure the space between the posts and cut two 2x4s to that length. These long pieces of wood are called "stringers" or "rails", and they will be attached horizontally to the posts to support the pickets. Typically, you'll need a stringer for each 2 feet of post height.
Before attaching the stringers, pre-drill screw holes at the ends of each to prevent the wood from splitting. Then, attach the stringers to the posts, following the contour of the ground. For a component fence, where you install individual pickets, longer stringers can span several posts, but you may need to cut some shorter to follow the ground's slope. It is essential to stagger the joints of the middle and bottom stringers and alternate joints on different posts to create a stronger structure.
Now, you can attach the pickets to the stringers. Count the number of pickets you'll need and cut them to size, either following your design or purchasing pre-cut pickets. Use a nail gun to set the pickets in position, securing them with screws. Maintain even spacing between the pickets by using a block of wood as a guide. Remember to keep the pickets fairly close together (typically about 2.5 inches apart) to ensure children and pets cannot fit their legs or heads between them.
Once all the pickets are attached, your fence is ready for painting or staining. However, it is recommended to wait for at least one to two months after installation to allow the wood to acclimate to the environment.
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Painting and decoration
Wait for a minimum of one to two months after installing your plastic picket fence to paint or stain it. This will allow the wood to get acclimated to your area's environment. You can use True Value EasyCare® Ultra Premium Exterior Paint or Woodsman® stain with a paintbrush to beautify and protect your new fence.
Before painting, use a pressure washer to clean down both sides of the pickets, moving the nozzle methodically up and down the rails. You can also use a mild soap solution and a soft brush to remove dirt and mildew. Check for holes and use an exterior filler with a patcher scraper to smooth them over and scrape off any excess filler. Allow the filler to dry and cure before sanding the filled holes and the front of each picket with sandpaper.
When painting, mix the paint thoroughly before pouring it into a smaller container or tray. Use a sash cutter to paint the gaps between the pickets and along the top and base rails. Finish each gap by brushing along the bottom to catch any drips before moving on to the next section. Spread a drop sheet along the front of the fence and use a picket fence and post roller to coat the front and edges of the pickets simultaneously. Dip the roller in paint and run it up over the ridges to remove excess.
To add a decorative look, you can install post caps on top of your fence posts. Post caps protect the end grain of the posts from the elements while enhancing the look of your outdoor space. You can even find post caps with LED lights to illuminate your garden.
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Frequently asked questions
First, you need to measure the area to be fenced and clear it of any rocks, roots, and debris. Then, mark out your fence line by driving stakes into the ground at each corner of the perimeter and running a line or string between them.
Mark the locations for the posts with spray paint about 7.5 feet apart. The size of the holes will depend on the height and weight of your fence. Generally, make each hole as deep as 1/3 the length of the post.
Pour gravel into the base of the holes for drainage. This prevents rainwater from causing fence post rot. Then, place the posts in the holes, ensuring their height is adjusted so the bottom of the pickets will be 2-5 inches above the ground.
Install the horizontal rails, or stringers, between the posts. Typically, you’ll need a stringer for each 2 feet of post height. Predrill the screw holes at the ends of the stringers to prevent splitting the boards. Attach the stringers to the posts following the contour of the ground.
Cut the pickets to size and use a nail gun to set them in position, securing them with screws. Ensure that the pickets are fairly close together so that children and pets cannot fit their legs or heads between them.







































