Installing Boat Seats: Aluminum Boat Edition

Installing seats in an aluminium boat can be a challenging task, especially if you don't have access to the underside of the bench to attach nuts. In this case, you may want to consider using a tool called a nut set tool, which will allow you to install nuts without access to the underside. Another option is to use blind nuts, which are designed for thin sheet metal and can be installed with a simple tool that pulls them up and spreads out the flanges. If you want to install a swivel seat, you'll need to make sure you have the right hardware and follow the proper steps to ensure a secure installation.

Using stainless steel bolts and nuts

When installing boat seats in an aluminium boat, it is important to consider the type of hardware you will use. Stainless steel bolts and nuts are a good option, as they are strong and durable. Here are some tips and instructions for using stainless steel bolts and nuts to install boat seats in an aluminium boat:

Planning and Preparation:

Before you begin, gather all the necessary materials and tools, including stainless steel bolts and nuts of appropriate size and length, washers, drill, screwdriver, and any other relevant tools. Ensure you have a clear understanding of the boat's layout and the location of the seat installation. Check if there is access to the underside of the mounting surface and plan your approach accordingly.

Reinforcement:

To ensure a sturdy installation, consider reinforcing the mounting surface. This can be achieved by using stainless steel reinforcing plates or, if inaccessible, a good hardwood can be used as an alternative. Another option is to bolt down a piece of wood across the length of the bench and then attach the seats to it, reducing flex and the chance of bolts ripping through the aluminium. Ensure that you do not use treated lumber as the copper in it can eat through the aluminium.

Installation Process:

When installing the seats, aim to go all the way through the mounting surface if possible. If you are unable to access the underside, you can use blind nuts, crush nuts, or a nut set tool to secure the bolts. These methods provide a strong hold without the need for traditional nuts. If you do have access to the underside, use stainless steel washers and backing plates for added strength.

Additional Considerations:

Consider adding a swivel base or a "lazy susan" to your seat installation, allowing for easy pivoting and added comfort. Additionally, you may want to add storage solutions or tackle boxes that can be installed near the seat for added functionality.

Remember to follow all safety precautions and guidelines when working with boats and hardware. With careful planning, reinforcement, and proper installation techniques, your stainless steel bolt and nut installation will provide a secure and comfortable seating solution for your aluminium boat.

Reinforcing with stainless steel plates

Step 1: Materials and Preparation

Before you begin, gather the necessary materials: stainless steel plates, stainless bolts and nuts, washers, a drill, and a wrench. Ensure you have access to the underside of the mounting surface for a more secure installation. If you don't have access, consider installing an inspection port or cutting a new access point.

Step 2: Positioning the Seats

Decide on the position of your boat seats. It's essential to choose a location that provides a comfortable seating experience and doesn't obstruct other boat features. Mark the mounting holes on the aluminum boat surface with a drill.

Step 3: Drilling and Reinforcement

Drill the marked holes. If you're drilling into the aluminum surface, ensure you use the appropriate drill bits to avoid damaging the material. Next, place the stainless steel plates on the mounting surface. The plates should be large enough to provide adequate reinforcement and distribute the weight evenly.

Step 4: Mounting the Seats

Insert the bolts through the mounting holes and stainless steel plates. Use stainless bolts and nuts that are specifically designed for marine environments to prevent corrosion. Secure the bolts with washers and nuts using a wrench. Ensure the bolts are tight and secure.

Step 5: Final Checks

Once the seats are mounted, perform a final inspection. Check that all bolts are tight and the seats feel sturdy and secure. Test the seats by applying some weight and ensure they don't wobble or shift. If necessary, make any adjustments to the bolts or washers.

By following these steps and reinforcing with stainless steel plates, you can securely install boat seats in your aluminum boat. This method provides a strong and durable connection, ensuring the safety and comfort of those onboard. Remember always to take the necessary safety precautions when working with power tools and drilling into your boat's surface.

Using swivel bases for ease of movement

Swivel bases are a great option for boat seats as they allow for ease of movement and provide a comfortable seating experience. Here are some tips and instructions for using swivel bases when installing boat seats in an aluminium boat:

Choosing the Right Swivel Base

Select a swivel base that is specifically designed for boat seats. Look for options such as the Swivl-Eze brand, which is a well-known and trusted name in the boating industry. Their products are designed for easy installation and operation, with user-friendly features that allow for quick adjustments. The Swivl-Eze Lock’N-Pin 3/4-Inch Pedestal Package includes everything you need to install a boat seat, apart from the seat itself and the hardware.

Preparing the Installation

Before installing the swivel base, decide on the location of the seat. If you're mounting the seat on a bench, ensure you have the necessary tools to drill holes and attach the base securely. If you don't have access to the underside of the bench, consider using self-tapping screws, toggle bolts, or nutserts/rivnuts to mount the base. These options provide a strong hold even without access to the back side of the surface.

Installing the Swivel Base

Drill holes into the bench or mounting surface. If using bolts, insert them into the holes of the swivel base, and then place the base onto the desired location on the bench. Secure the base by tightening the bolts and adding washers and nuts on the backside of the bench. If using screws, make sure they are long enough to provide a strong hold but not so long that they protrude from the underside of the bench.

Attaching the Seat

Once the swivel base is securely installed, you can attach the seat. Swivel bases typically use a pin-type mechanism to lock the seat in place. Place the seat onto the base and ensure it is locked securely. Test the swivel function by gently rotating the seat to ensure it moves smoothly and safely.

Maintenance and Care

Swivel bases require minimal maintenance, but it's important to keep them clean and well-lubricated. Use mild soap and water to clean the swivel mechanism, and apply grease or lubricant to ensure smooth rotation. Check the base and mounting hardware periodically to ensure everything remains tight and secure.

By following these steps and choosing the right swivel base, you can ensure your boat seats provide a comfortable and stable seating experience with ease of movement.

Installing wood across the length of the bench first

When installing boat seats on an aluminum boat, it is recommended to first bolt wood across the length of the bench. This will reduce flex and lessen the chance of ripping the bolts out of the aluminum.

It is important to note that you should not use treated lumber, as the copper used in treated lumber will eat through the aluminum. Instead, use normal lumber and treat it with a sealant, such as Johnson's water seal, or a coating of fiberglass resin.

When bolting the wood to the aluminum bench, you can use L brackets or carriage bolts. Make sure to use stainless bolts and nuts, and go all the way through the mounting surface if possible. You can also use stainless reinforcing plates on both the top and bottom of the mounting surface for added strength.

By following these steps, you can ensure that your boat seats are securely installed and reduce the risk of damage to your aluminum boat.

Using a sealant to treat the wood

When installing boat seats in an aluminium boat, it is important to consider the type of wood you will be using. The wood should be properly sealed to handle the marine environment. The wood on your boat will be exposed to water, UV rays, and humidity, so it is crucial to select a sealer designed for marine use.

Step 1: Prepare the Wood

Start by rubbing off any previous finish on the wood using sandpaper. You can use two different grits of sandpaper—start with a coarse grit to remove any stubborn finishes or imperfections, and then switch to a finer grit to give the wood a smooth and uniform finish. It is important to ensure that the wood is free of any debris or old sealant before applying the new sealer.

Step 2: Select the Appropriate Sealer

Choose a sealer that is specifically designed for marine use. There are a variety of sealers available, such as polysulfide, silicone, and polyurethane sealants. Consider the type of wood you are using and the specific requirements of your project. For example, if you need to join materials that will not be separated in the future, polyurethane is a good option due to its strong adhesive strength. On the other hand, if you need to insulate non-similar metals or bed plastic, silicone is a better choice.

Step 3: Apply the Sealer

Follow the manufacturer's instructions carefully when applying the sealer. Use a paintbrush, roller, or sprayer to apply a uniform coat of the sealer to the wood. Ensure that you are working in a well-ventilated area and follow all safety guidelines, such as wearing gloves and a mask. Allow the sealer to dry completely according to the manufacturer's instructions.

Step 4: Cure the Wood

Give the wood plenty of time to cure. Even if the sealer you are using claims to be quick-curing, it is always a good idea to let it cure for longer to ensure that humidity does not interfere with the process. The wood should be properly dry and sealed before it comes into contact with water again.

Step 5: Maintenance and Reapplication

Remember to inspect the wood regularly, at least once a year, to ensure that it is still properly sealed. Look for any signs of waterlogging, rot, or damage to the sealant. If necessary, reapply the sealer to maintain the protection of the wood. Additionally, consider applying a topcoat to provide an additional layer of protection and enhance the appearance of the wood.

By following these steps and using a sealant to treat the wood, you can effectively install boat seats in your aluminium boat, ensuring the wood is protected from the elements and maintaining the beauty and functionality of your boat for years to come.

Frequently asked questions