Keel Guard Replacement: A Step-By-Step Guide For Boat Owners

Keel guards are an essential line of defence for your boat, protecting its keel from costly damage caused by sand, rocks, and concrete ramps. Keel guards are an effective way to safeguard your vessel from scratches, scars, and abrasions. They are also designed to be easy to install, with a simple prep, peel, and stick application process. This guide will take you through the steps to replace your keel guard, ensuring your boat is protected and ready for its next outing.

Choosing the right keel guard for your boat

The keel guard is an essential component for protecting your boat from damage caused by sand, rocks, concrete ramps, and even oyster beds. When choosing a keel guard, it's important to consider the specific needs of your boat and the conditions it will encounter.

Firstly, consider the material of your boat's hull. Keel guards are typically made from abrasion-resistant materials like polymers and urethanes, which offer durability and pliability. If you have an aluminium boat, look for a keel guard designed specifically for aluminium hulls, such as the Gator Guards KeelShield, which is made from 100% Pure Polyurethane and fits most aluminium boat brands.

Secondly, size and fit are crucial. Keel guards should be available in various standard lengths, and some companies also offer custom lengths. Ensure the keel guard you choose can accommodate the length of your boat's keel. Additionally, consider the width of the keel guard. Most keel guards range from 5 to 6 inches in width, but you should select the width that best suits the size and design of your boat.

Thirdly, colour may be a factor in your decision. Keel guards come in a variety of colours to match different boat designs. Choose a colour that complements your boat, and look for UV-stabilized colours to ensure the colour remains vibrant over time.

Finally, consider the ease of installation. Some keel guards are designed for DIY installation, with self-adhesive properties that make them easy to apply. Others may require additional sealants or professional installation. If you plan to install the keel guard yourself, opt for a product that offers clear instructions and includes all the necessary components for a secure fit.

By considering these factors, you can choose the right keel guard to protect your boat and ensure a long-lasting, high-quality investment.

Preparing the keel guard for installation

Firstly, ensure you have the right keel guard for your boat. Keel guards come in different lengths and colours, and some are designed for specific boat types. Check the compatibility of your keel guard with your boat type and size. Most keel guards are compatible with fiberglass boats and many aluminium-hulled boats.

Next, prepare the surface of your boat. Clean the area where the keel guard will be installed, removing any dirt, grease, or debris. This is an important step to ensure proper adhesion. You can use isopropyl alcohol or a similar solvent to clean the surface.

If your keel guard kit includes an adhesion promoter or activator, apply it to the cleaned surface according to the manufacturer's instructions. This will help ensure a strong bond between the keel guard and the boat hull.

Now, prepare the keel guard itself. Lay it out in direct, warm sunlight for about 30 minutes to make the material more flexible and easier to work with. This step is especially important if you have an aluminium boat with ribs or protrusions that the keel guard needs to form around. If sunlight is not available, you can use a hairdryer to achieve the same effect.

With the keel guard material warmed up, you can now test-fit it to your boat's keel. Carefully align it, ensuring it is centred and covers any necessary areas. Mark the position with tape or a similar removable method to ensure accurate placement during the final installation.

Finally, if your keel guard requires it, you can apply a marine-grade sealant to the edges of the keel guard. This will ensure a watertight seal and provide additional protection against water ingress.

By following these steps, you will have successfully prepared your keel guard for installation, ensuring a strong and secure bond to your boat's keel.

Installing the keel guard

To install a keel guard on your boat, follow these steps:

First, ensure your boat is compatible with the keel guard. Keel guards are compatible with most boats, but some hull designs with sharp edges and large protruding keel bones may prevent adhesion. Check the manufacturer's boat compatibility list to confirm if your boat is suitable.

Next, prepare the keel guard for installation. Lay the keel guard in direct, warm sunlight for 30 minutes to make the material flexible and easy to form around the keel and any protrusions. Alternatively, use a hairdryer to achieve the same effect.

Now, you're ready to begin the installation process. Start by cleaning the keel surface thoroughly. This step is crucial to ensure proper adhesion. Follow the manufacturer's instructions for the specific cleaning agents or solvents recommended for use with the keel guard.

Once the surface is clean and dry, carefully follow the manufacturer's instructions for applying the adhesive. Typically, this involves a simple prep, peel, and stick process using a 3M adhesive system. Ensure you work in a well-ventilated area during this step.

After applying the adhesive, carefully align the keel guard with the keel, ensuring it is centred and straight. Start at the top of the keel and work your way down, pressing the keel guard firmly into place. Use a roller or similar tool to smooth out any air bubbles and ensure a strong bond.

Finally, inspect your work thoroughly. Ensure the keel guard is securely adhered and there are no gaps or air bubbles that could allow water to penetrate. If necessary, use a marine-grade sealant for any areas around the edges of the keel guard that may be uneven or require additional protection.

By carefully following these steps, you can effectively install a keel guard on your boat, providing essential protection against scratches, scars, and abrasions.

Sealing the keel guard

Prepare the Keel Guard for Sealing:

Before you begin sealing, it's important to ensure that the Keel Guard is properly positioned and fitted to the keel of your boat. Follow the manufacturer's instructions for fitting the Keel Guard, which may include laying it out in the sun or using a hairdryer to make the material more flexible for easy installation.

Choose a Suitable Sealant:

Use a marine-grade sealant that is designed for use below the waterline. This type of sealant will be able to withstand the harsh conditions and constant exposure to water, providing a strong and durable bond.

Apply the Sealant:

Focus on the leading and trailing edges of the Keel Guard, applying a generous amount of sealant. Use a sealant that comes with an adhesive to ensure that the Keel Guard is securely bonded to the keel. Pay close attention to any uneven areas or gaps near the keel protrusion, as these are vulnerable spots where water could potentially penetrate. Make sure to follow the manufacturer's instructions for the specific sealant you are using, including curing or drying times.

Smooth Out Any Excess:

After applying the sealant, carefully inspect the area to ensure that there are no gaps or thin spots. Use a suitable tool, such as a sealant spreader or a flat-edged spatula, to smooth out any excess sealant and create a neat finish.

Allow Adequate Curing Time:

Before launching your boat back into the water, make sure to allow sufficient time for the sealant to cure completely. Refer to the manufacturer's instructions for the recommended curing time, as this can vary depending on the type of sealant used and the environmental conditions.

By following these steps and allowing adequate curing time, you can ensure that your Keel Guard is securely sealed and will effectively protect your boat's keel from abrasion, scratches, and other types of damage.

Maintaining the keel guard

Cleaning and Inspection:

Regularly clean the keel guard using mild soap and water. Rinse it thoroughly to remove any dirt, debris, or salt buildup. Conduct a visual inspection of the keel guard for any signs of wear, tears, or abrasions. Pay close attention to the edges and areas that come into contact with the keel.

Adhesion Check:

Ensure that the keel guard is securely adhered to the keel. Over time, the adhesive may weaken or degrade, especially if the boat is frequently used in saltwater environments. Gently try to lift the edges of the keel guard to check if it is firmly attached. If you notice any peeling or lifting, re-adhesion is necessary.

Re-adhesion:

If the keel guard shows signs of peeling or lifting, you will need to re-adhere it to the keel. First, remove the keel guard by gently peeling it off, being careful not to stretch or damage it. Clean the keel and the keel guard surface with a suitable solvent, such as isopropyl alcohol, to remove any residual adhesive. Allow the surfaces to dry completely. Apply a fresh coat of marine-grade adhesive to the keel and carefully re-attach the keel guard, following the original installation instructions.

Surface Protection:

Apply a protective coating to the keel guard to enhance its durability and protect it from the elements. There are various products available, such as UV-inhibiting coatings or sealants, that can be applied to the surface of the keel guard to prevent discolouration and degradation from sunlight exposure. Follow the manufacturer's instructions for proper application and curing times.

Maintenance During Storage:

If you store your boat for extended periods, ensure the keel guard is in good condition before putting the boat away. Clean and inspect the keel guard, and address any issues, such as peeling or discolouration, before storing the boat. During storage, cover the keel guard with a breathable fabric to protect it from dust and debris. Ensure the storage area is well-ventilated and that the boat is stored in a way that minimizes direct sunlight exposure on the keel guard.

By following these maintenance steps, you can extend the life of your keel guard and ensure that your boat's keel remains protected. Regular care and inspection will help prevent unexpected failures and costly repairs.

Frequently asked questions