
PVC is a popular choice for trim due to its durability and low-maintenance finish. However, one common issue with PVC trim is the visibility of nail holes, which can detract from the overall appearance of the material. While there are various methods to fill and conceal these holes, such as epoxy putty, spackling compound, or caulk, one product that stands out for its ease of use and effectiveness is the PVC TrimWelder Nail Eraser. This product comes in the form of a white crayon, which can be scrubbed over the nail holes to fill them seamlessly. Any excess filler can then be wiped away with a cloth or solvent, leaving a smooth and professional finish.
Characteristics and Values Table for Removing Excess Filler on PVC Nail Holes
| Characteristics | Values |
|---|---|
| Filler Type | Epoxy putty, lightweight exterior putty, Bondo, caulk, PVC TrimWelder Nail Eraser (wax crayon) |
| Grit for Sanding | 80-grit or higher to avoid PVC melting and scratching |
| Sanding Technique | Use light pressure |
| Heat Application | Use a heat gun to remove scratches and small dents |
| Caulking | Avoid caulking as it can lead to unpleasant cracking and mildewing |
| PVC Nails | Use PVC-coated nails/tacks with a small disk on the head to avoid filler |
| PVC Plugs | Use PVC plugs that come with screws to fill holes |
| Painting | Paint PVC with acrylic paint to match the siding |
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What You'll Learn

Use a PVC TrimWelder Nail Eraser crayon
The PVC TrimWelder Nail Eraser crayon is a convenient and effective way to fill in nail holes in PVC trim boards that will remain unpainted. It is a white crayon that seamlessly fills in nail holes with just a few rubs, and you can leave it as is or wipe off any excess with a cloth or a solvent.
The nail eraser crayon contains a special blend of fillers to resist yellowing and has been laboratory-tested for hole retention on cellular PVC at 140°F. It is packaged in a convenient blister pack for secure holding and easy access.
To use the PVC TrimWelder Nail Eraser crayon, scrub the tip back and forth over the hole until it is filled. Then, wipe the PVC trim board clean and flush with a dry cloth or paper towel to ensure a smooth finish.
The product has received positive reviews from customers who found it easy to use and effective in filling nail holes, creating a seamless and professional finish. Some customers noted that the crayon broke when they first used it, but it still worked well and looked very professional.
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Sand with 100-120 grit sandpaper
Sanding is an effective way to remove excess filler from PVC nail holes. When sanding, it is recommended to use 100 to 120 grit sandpaper. This type of sandpaper will help you achieve a smooth and even surface on your PVC trim.
Start by lightly sanding the area with the 100-120 grit sandpaper. Apply light pressure and move the sandpaper in the direction of the grain, if there is one. Make sure to work slowly and carefully to avoid over-sanding or damaging the PVC surface.
It is important to note that PVC is a type of plastic, and aggressive sanding with a grit lower than 80 can cause the material to ball up and leave scratch marks. Therefore, it is crucial to be cautious and patient during the sanding process.
Additionally, you can use a heat gun to remove any excess filler. Apply heat to the area and watch as the filler pops right out. This method is especially useful for removing scratches and small dents from the PVC surface.
Once you have finished sanding, you can move on to the next step of your project, whether it is painting the PVC trim or simply enjoying your handiwork. Remember always to work carefully and wear the appropriate safety gear when working with power tools and sanding materials.
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Use a heat gun to remove scratches
Filler can be used to fill in nail holes in PVC trim, but there is no information on how to remove excess filler from PVC nail holes. However, there are several methods for removing scratches from plastic using a heat gun.
To remove scratches from plastic using a heat gun, you must first clean the plastic surface to prepare it for repair. Spray an interior car cleaner onto a microfiber towel and rub it into the surface in circular motions to remove dirt and grime. Then, use another microfiber towel to wipe off the excess solution and dirt.
When the plastic surface is clean and dry, turn on the heat gun to a recommended heat setting and apply heat to the scratched area. Keep the gun moving at a constant rate to ensure even heat exposure and avoid creating an uneven or blotchy surface. You can turn the heat gun on medium and hold it about a foot away from the surface, waving it around the affected area for a minute or two, then letting it cool for a few minutes. Repeat this process two more times. Be careful not to heat the surface for too long, as the plastic can melt or become permanently damaged. Stop if you notice the surface starting to lose its texture.
You can also use fine sandpaper to sand down the scratches before applying heat. After sanding, clean the surface with a microfiber towel and car cleaner, then use the heat gun as described above.
It is important to note that this process may not work for all types of scratches and plastics. While it can be effective for removing scratches from interior car panels, it may not work for deeper scratches or certain types of plastic. Additionally, it may not be suitable for black plastic, as it can leave a haze. Always test the method on a small, inconspicuous area first to ensure it does not cause further damage.
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$12.99 $13.99

Fill with epoxy putty
Filling nail holes in PVC trim is a simple process that can be completed in a few steps. While ordinary putty may be effective in the short term, epoxy putty is a more durable option. Epoxy putty is a two-part system that is preferred by professionals for serious restoration work.
First, ensure that the nail holes are clean and free of debris. You can use a vacuum to remove any dust or dirt from the holes. Then, mix the epoxy putty according to the manufacturer's instructions. It is important to follow the instructions carefully to ensure that the putty sets properly.
Once the putty is mixed, use a putty knife to fill the nail holes. Apply the putty to the holes generously, making sure to fill them completely. You can then use the putty knife to smooth out the putty and remove any excess. If needed, you can also use your fingertips to work the putty smooth.
After filling and smoothing the epoxy putty, you will need to let it set and dry completely. This may take some time, so be sure to refer to the manufacturer's instructions for the specific drying time. Once the putty is dry, you can use 100 to 120 grit sandpaper to sand down the filled holes lightly. This will help to create a smooth and flush surface.
Finally, you can paint the PVC trim if desired. If you choose to paint, be sure to use a paint that is suitable for PVC and follow the manufacturer's instructions for proper application.
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Use a single-edged razor blade
When removing excess filler from PVC nail holes, one method is to use a single-edged razor blade. This technique requires careful execution to avoid damaging the PVC surface. Here is a step-by-step guide on how to use a single-edged razor blade for this purpose:
First, it is important to identify the type of filler used. Common fillers for nail holes include caulk, wood filler, or putty. Each type of filler has unique characteristics that influence the removal process. For instance, caulk is typically flexible and paintable, while wood filler or putty dries hard and is often brown in colour. Understanding the properties of the filler will help determine the most effective approach for removal.
If the filler is caulk, a razor blade can be used to carefully trim away the excess. Caulk is usually flexible and can be cut without damaging the underlying surface. However, it is important to work cautiously and hold the razor blade at a slight angle to avoid gouging the PVC. Start by positioning the blade flat against the surface and gently applying pressure to cut through the excess caulk.
For wood filler or putty, the process may vary slightly. These fillers harden as they dry, so they may require more careful trimming. Again, use a gentle touch and a slight angle with the razor blade to gradually remove the excess filler. Due to the hardness of wood filler or putty, it may be necessary to work in small increments to avoid applying excessive force.
After removing the bulk of the excess filler with the razor blade, it is crucial to smooth the area. This step ensures a seamless finish and removes any remaining filler residue. Depending on the filler type, you can use a putty knife or your fingertip to smooth the surface. For caulk, a putty knife can be effective, while wood filler or putty may require gentle sanding with fine-grit sandpaper.
Finally, once the excess filler is removed and the surface is smooth, you may need to address the appearance of the PVC. If the nail holes were filled on a painted surface, touch-up paint may be necessary to match the surrounding colour. For unpainted PVC, consider using a PVC-specific eraser crayon to fill any remaining gaps and create a seamless finish. These eraser crayons are designed to resist yellowing and provide a long-lasting solution for hiding nail holes.
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Frequently asked questions
You can use a cloth or a small amount of solvent to clean off any excess filler.
You can use a crayon-like stick filler, epoxy putty, or lightweight exterior putty.
PVC TrimWelder Nail Eraser is a popular choice. It is a PVC-grade eraser wax crayon that can fill in nail holes up to 1/8 of an inch.
Scrub the tip of the crayon back and forth over the hole until it is filled. Then, wipe the PVC trim board clean with a dry cloth or paper towel.
You can use a two-part epoxy that is available with a special caulk gun. Trimwelder and Bondnfil make a two-part epoxy for laminating PVC and filling holes.











































