Replacing Bottom Rivets: Aluminum Fishing Boat Maintenance Guide

Owning an aluminum fishing boat comes with its own set of maintenance challenges. One of the most common issues faced by owners is dealing with leaking rivets, which can cause water to seep into the boat. While there are temporary fixes such as applying epoxy or silicone, a more permanent solution involves replacing the rivets. This process typically involves drilling out the old rivets, cleaning the area, and then installing new aluminum rivets using specialized tools like an air hammer and compressor. It is also important to use the correct type of rivet and ensure proper alignment to prevent leaks and corrosion. With the right tools and knowledge, repairing bottom rivets on an aluminum fishing boat can be a manageable task.

Identify and source the right rivets for your boat

When it comes to replacing the bottom rivets on your aluminum fishing boat, choosing the right type of rivets is crucial. The right rivets will ensure the strength, durability, and overall performance of your boat. Here are some detailed guidelines to help you identify and source the correct rivets:

• Material compatibility: It is essential to use rivets specifically designed for aluminum boats. Rivets made for other materials may not provide a secure and long-lasting bond. Choose rivets made of aluminum or another compatible material.
• Corrosion resistance: As your boat will be exposed to water, select rivets made of corrosion-resistant materials. Stainless steel or aluminum rivets with anti-corrosion coatings are ideal for preventing structural damage and prolonging the lifespan of your boat.
• Strength and load capacity: Your boat will be subjected to various loads and stresses, including waves and wind. Ensure the rivets you choose have sufficient strength and load capacity to withstand these forces.
• Size and shape: The size and shape of the rivets are critical for creating a tight seal and preventing leaks. Measure the thickness of your boat's hull and select rivets that are the right size and shape for your application.
• Water-tight seal: Creating a water-tight seal is crucial for preventing leaks and maintaining the structural integrity of your boat. Choose closed-end rivets or apply a sealant like epoxy or silicon to the rivets to ensure a water-tight seal.
• Type of rivet: There are several types of rivets available, including solid rivets, blind rivets (pop rivets), and closed-end rivets. Solid rivets provide a strong and permanent bond but require access to both sides of the joint and are more time-consuming to install. Blind rivets are easy to install and do not require access to both sides, making them popular for repairs. Closed-end rivets are specifically designed for a water-tight seal and are commonly used in areas exposed to water.

When sourcing rivets for your aluminum fishing boat, consider purchasing from specialist suppliers, such as Aircraft Spruce or rivetsinstock.com, who can provide guidance on the most suitable options. Additionally, online retailers like rivetsonline.com offer a wide range of rivet types. For a cost-effective option, consider purchasing a rivet gun from a hardware store or a retailer like Harbor Freight.

Remember, taking the time to identify and source the right rivets for your aluminum fishing boat will ensure a safe and reliable vessel for your fishing adventures.

Remove the old rivets with a drill or a chisel

Removing rivets from an aluminum fishing boat can be done in several ways, depending on the tools you have available and the type of rivets you're dealing with. Here is a detailed guide on how to remove the old rivets using a drill or a chisel:

Using a Drill:

Drilling out rivets is the most common and versatile removal method. It is suitable for most rivet types and materials, including aluminum. Here is a step-by-step guide:

• Select a drill bit slightly larger than the rivet's mandrel. The drill bit should be long enough to penetrate all the way through the rivet.
• Create a starting point on the rivet head using a center punch. Hold the punch against the top of the rivet and strike it with a hammer to create a small dent.
• Attach the drill bit to the drill and lubricate it with cutting oil. This will help the bit pierce through the rivet smoothly and prevent overheating.
• Put on safety glasses and other protective gear, including ear protection and work gloves. Metal drilling can create sparks and cause fragments to fly off.
• Position the drill bit against the divot in the center of the rivet and apply firm pressure. Keep one hand on the drill handle and the other on the drill to stabilize it.
• Start drilling at a low but steady speed. Maintain pressure as you drill through the rivet.
• Continue drilling until the rivet is completely removed from the surface. You may need to increase pressure slightly as you drill through the rivet body.
• Remove any remaining pieces of the rivet with pliers or a punch.

Using a Chisel:

When precision is not critical and you're dealing with stubborn rivets, a more forceful approach can be taken. Here is a step-by-step guide:

• Position the thin, sharp end of the chisel beneath the head of the rivet. Wiggle the chisel a little to wedge it into place and gain leverage.
• Break off the head of the rivet by firmly striking the chisel with a hammer. It may take several strikes to remove the head, and it may not break off evenly.
• Chip off any remaining pieces of the head with the hammer and chisel. Be careful not to hit your hand with the hammer.
• Once the head is removed, place the chisel against the top of the rivet and hold it securely in place. You can knock a few dents into the rivet to help keep the chisel in place.
• Hammer the chisel with controlled, firm strikes until the rivet is pushed through the surface. Do not rush this process to avoid slipping and causing injury.
• Collect all rivet fragments to prevent potential damage or injury.

Whether you choose to use a drill or a chisel, always prioritize safety and be cautious to avoid damaging your boat.

Clean the area with a wire brush or wheel

When replacing the bottom rivets on an aluminum fishing boat, it is important to clean the area thoroughly before beginning any repair work. This step ensures that the new rivets will be securely fastened and helps to prevent future leaks.

Using a wire brush or wheel, vigorously scrub the area around the rivet to remove any dirt, debris, paint, or residue. This process may require some elbow grease, especially if there is built-up grime or corrosion. Take your time and ensure that the area is thoroughly cleaned. It is crucial to have a clean surface to work on, as it will help ensure a strong and long-lasting repair.

If you are using a wire wheel, make sure it is stainless steel to avoid leaving any residue that could cause corrosion. You can attach the wire wheel to a drill to make the cleaning process faster and more efficient. Be careful not to apply too much pressure, as this could damage the aluminum. Work systematically around the rivet, making sure to cover the entire area.

Once you have finished cleaning with the wire brush or wheel, inspect the area closely. Ensure that all paint, dirt, and corrosion have been removed, and the aluminum surface is exposed. It is important to have a clean and smooth surface to work on. If there are any remaining traces of paint or corrosion, use sandpaper to gently remove them. Again, be careful not to apply too much pressure, as you don't want to damage the aluminum surface.

After cleaning, you may want to apply a primer or treatment to the aluminum surface. This will help protect the metal and provide a better base for the new rivets. Consult with a marine specialist or boat repair expert to determine the best products to use for your specific boat and conditions. Remember to always follow the manufacturer's instructions and take the necessary safety precautions when working with any chemicals or treatments.

Apply sealant to the new rivets

When replacing the bottom rivets on an aluminum fishing boat, it is important to apply a sealant to the new rivets to ensure they are watertight and to prevent corrosion. Here are some detailed instructions on how to do this:

Before applying the sealant, make sure the area around the new rivets is clean and free of any debris, wax, or loose paint. Use a scotch-brite pad or wire brush to gently clean the surface, and then wipe it down with a solvent to ensure the sealant will adhere properly.

There are several types of sealants that can be used on aluminum boats, including silicone caulk, 5200 by 3M, Amazing GOOP Marine, and PRC. Choose a sealant that is specifically designed for use on aluminum and that is flexible enough to withstand the flexion and vibration of the boat. Some sealants can become brittle and crack over time, so it is important to select one that is tough and elastic.

Once you have chosen the appropriate sealant, apply it to the rivets following the manufacturer's instructions. Typically, you will want to dip the rivet into the sealant or use a brush to apply it generously around the rivet head and shank. Make sure to get sealant into the seam between the rivet and the boat, as this is a common area for leaks.

After applying the sealant, use a smooth tool or your finger to smooth out the sealant and remove any excess. Allow the sealant to cure completely according to the manufacturer's instructions before exposing the boat to water.

In addition to sealing the rivets themselves, it is a good idea to apply a coat of a high-quality boat coating over the rivets and seals. This will provide a second layer of protection against leaks and help to protect the integrity of the seal. Choose a flexible coating that adheres well to both the sealant and the aluminum, such as Wetlander. Follow the manufacturer's instructions for application, and make sure to coat not only the rivets but also the surrounding area for added protection.

Install the new rivets with a rivet gun or hammer

Once you have drilled out the old rivets, you can start to install the new ones. It is recommended to use a rivet gun or an air hammer to save time and effort, but it is possible to use a hammer. You will also need a "bucking bar", which can be a 2lb mallet or a similar heavy object.

The new rivets should be aluminium to match the existing ones. Make sure the rivets are the right size for the holes, and that the holes are clean and free of debris. It is also important to replace one rivet at a time, rather than drilling out a large section, to avoid the two metals shifting and causing alignment issues.

To install the rivets, place the new rivet into the hole from the outside of the boat. The "head" of the rivet (the round part) should be on the outside of the hull. Use the rivet gun or hammer to hit the head of the rivet. Your helper should be inside the boat, holding the bucking bar against the shank of the rivet. When you hit the head of the rivet, the shank will flatten out, securing the rivet in place. Be careful not to over-hammer, as this can crack the rivet.

Frequently asked questions