Best Places To Store Your Boat With Shrink Wrap

Shrink wrapping a boat is a great way to keep it in top condition when storing it for the winter or shipping it. It involves applying a tight layer of shrink wrap to the boat, which blocks out cold air, moisture, and sunlight. The process typically includes moving and securing the boat, building a fabric frame, applying the shrink wrap, and finishing and venting the seal. The boat should be placed in a well-ventilated area, as the shrink wrap releases chemicals when heated. Sharp corners should be padded, and fuel vents should be covered and sealed. The shrink wrap is then draped over the boat and heated with a gun, before being welded and secured. Finally, adhesive vents are placed along the sides of the boat to allow for moisture release.

How to prepare your boat for shrink wrapping

Shrink wrapping a boat is a great way to protect it from the elements, especially during the winter months. Here are the steps you can follow to prepare your boat for shrink wrapping:

Move and Secure the Boat:

• Take the boat out of the water and move it to a well-ventilated area for storage, preferably inside a marina or garage.
• Cover fuel vents with shrink wrap tape and turn off the fuel line valve to prevent heat from igniting fuel vapors.
• If possible, bring the boat to its winter storage location before shrink wrapping to avoid damaging the wrapping during transportation.

Pad Sharp Corners:

• Use foam cushions or towels to cover sharp edges and corners, such as windshield corners, antennas, and ski pylons.
• Secure the padding with shrink wrap tape or similar adhesive to ensure the shrink wrap can rest against these edges without tearing.

Build a Fabric Frame:

• Set up support posts along the center of the boat, placing the first post near the bow and the second near the stern.
• Run polyester straps from the back to the front of the boat, threading them through the grooves on the support post caps.
• Create loops at the end of each strap and secure them to the cleats and edge rails.
• Wrap a perimeter band around the boat, running a strap through the loops and tying it securely at the stern.

Measure and Drape the Shrink Wrap:

• Measure the boat's height and length to determine how much shrink wrap material you need.
• Drape the shrink wrap over the boat, starting from the top of the support posts and working your way down to the hull.
• Ensure the shrink wrap reaches the perimeter band and leave some extra material to cut and tuck as needed.

Secure and Heat the Shrink Wrap:

• Use a heat gun to weld the shrink wrap to the perimeter band, working your way around the boat.
• Tie belly bands along the trailer every 6 inches (15 cm) to keep the shrink wrap pulled tight.
• Secure the shrink wrap at the back end of the boat, tucking and heating it in place.
• Heat the wrap from the back to the front of the boat, using a steady motion to avoid overheating and melting the wrap.

Finish and Vent the Seal:

• Tape over any holes or weak points in the shrink wrap, and place adhesive vents along the sides of the boat for ventilation.
• If you need access to the boat during storage, install a zippered door by taping it in place, cutting an opening, and pulling the zipper closed.

The process of applying shrink wrap

Step 1: Create a Support Structure

Before applying the shrink wrap, it is essential to build a sturdy framework that will support the wrap and protect the boat. This structure is typically made using Cross-Woven Polyester Strapping and consists of a Centre Strap, Ribbing or Side Straps, Drop Loops, and a Perimeter Strap. The Centre Strap runs along the length of the boat, forming the spine of the structure. The Ribbing or Side Straps are tied across the Centre Strap, creating a rib cage effect. Drop Loops are then tied around the bottom of the stanchions, and the Perimeter Strap is fed through these loops to secure the structure.

Step 2: Padding and Protection

Once the basic structure is in place, it is important to pad any sharp edges or protrusions that might puncture or tear the shrink wrap. Common areas to pad include handles, antennae, horns, and windshields. It is also recommended to cover fuel vents with shrink wrap tape to seal them and prevent heat from igniting fuel vapours.

Step 3: Drape and Secure the Shrink Wrap

Measure the boat to determine the required amount of shrink wrap, taking into account the height and length of the boat, as well as any additional material needed to tuck under the Perimeter Strap. Drape the shrink wrap over the boat, ensuring it is centred on the Centre Strap and extends beyond the Perimeter Strap. Secure the shrink wrap to the Perimeter Strap by welding it with a heat tool, creating a tight seal.

Step 4: Apply Belly Bands

Belly Bands are added to further secure the shrink wrap and prevent the Perimeter Strap from pulling up. Cut small slits in the shrink wrap above the Perimeter Strap and thread Belly Bands (made of polyester strapping) through these slits. Tie them securely, ensuring they are not pulled too tightly, as their main purpose is to keep the Perimeter Strap in place.

Step 5: Heat and Shrink the Wrap

Using a propane heat gun, carefully apply heat to the shrink wrap, starting from the back of the boat and working your way forward. Hold the heat gun about 6 inches (15 cm) away from the surface and move it in a steady, sweeping motion to avoid overheating or melting the wrap. Pay close attention to the heated areas and avoid shrinking the same spot twice. Use a ladder or extension to reach the upper parts of the boat if needed.

Step 6: Ventilation and Final Touches

To prevent moisture buildup and mould, install shrink wrap vents along the sides of the boat. These vents allow air circulation and help keep the boat dry. Additionally, cover any holes or weak points in the shrink wrap with tape, and consider installing a zippered door if you need access to the boat during storage.

The equipment and materials needed

To effectively shrink wrap a boat, you will need a variety of equipment and materials. Here is a comprehensive list:

• Shrink wrap film: This is the plastic film that will be applied to the boat. It is made of polyethylene and designed to tightly enclose the boat, protecting it from the elements.
• Heat gun: A heat gun is used to apply heat to the shrink wrap, causing it to shrink tightly around the boat. You can use a propane-fired heat gun or an electric heat gun.
• Support structure: A support structure is necessary to provide a frame for the shrink wrap. This can include support posts, such as 2" x 4" wood posts, and polyester straps to secure the posts in place.
• Film cutters: You will need a sharp knife or film cutters to cut the shrink wrap film to the required size.
• Ventilation: Adequate ventilation is crucial during the process to release chemicals emitted by the heated shrink wrap. Ensure open doors or ventilation ports are available. Additionally, heat shrink vents can be installed to provide airflow and prevent moisture buildup.
• Adhesives: Adhesives such as shrink wrap tape or spray adhesive are used to secure the shrink wrap and seal any holes or seams.
• Protective gear: It is important to wear protective gear, such as a respirator or dust mask, to safeguard yourself from fumes released during the heating process. Gloves are also recommended to protect your hands from the heat.
• Padding: Foam cushions or towels can be used to pad sharp corners and edges, preventing damage to the shrink wrap.
• Vents and doors: Vents are necessary to allow moisture escape, preventing mould and mildew growth. Adhesive vents can be placed along the sides of the boat, typically requiring 4-6 vents for a small powerboat. Additionally, a zippered door can be installed if access to the boat is needed during storage.
• Other tools: Other useful tools include a strap tensioning tool to tighten straps, a ladder or extension for reaching high areas, and a film knife for making precise cuts in the shrink wrap.

It is important to note that the amount of shrink wrap film required will depend on the size of your boat. Measure your boat's height and length to determine the necessary amount. It is better to have excess film than not enough.

Safety precautions and considerations

Shrink-wrapping a boat is a complex process that requires careful attention to safety. Here are some safety precautions and considerations to keep in mind:

Working Environment

When working with boat shrink wrap, it is important to choose a well-ventilated area. The process of heating the shrink wrap releases chemicals, so ensure that you are working outdoors or in a space with good airflow and open doors. If working outdoors, pick a calm, windless day as strong winds can make the process difficult.

Personal Protective Equipment

To protect yourself from the fumes released by the heated shrink wrap, wear a respirator or a dust mask. Additionally, always have a fire extinguisher nearby as the wrap is flammable when overheated. Wear heat-resistant gloves to protect your hands when working with the heat gun.

Fuel Vents

Before wrapping your boat, be sure to turn off the fuel line valve and drain any remaining fuel. Cover the fuel vents with shrink wrap tape to completely seal them and prevent heat from igniting fuel vapors.

Sharp Edges and Corners

Sharp edges and corners can damage the shrink wrap and compromise its integrity. Use foam cushions, towels, or foam insulation to pad these areas. Tape the cushioning in place with shrink wrap tape, ensuring that the wrap can rest against these edges without tearing.

Structural Support

Creating a sturdy structure to support the shrink wrap is crucial. Use cross-woven polyester straps to form a centre strap, ribbing, drop loops, and a perimeter strap. This structure ensures the shrink wrap is securely held in place and reduces the risk of pooling water, which can weigh down and stretch the wrap.

Heating Process

When using the heat gun, always keep it in motion with a steady pace to avoid overheating and melting the wrap. Pay close attention to the areas you have heated, and be cautious around heated areas to prevent burns.

Vents and Doors

Install adhesive vents along the sides of the boat to allow for proper ventilation and prevent moisture buildup, which can lead to mould growth. Additionally, consider installing a zippered door if you need to access the boat during storage.

Alternative protection methods

There are several alternative ways to protect your boat without using shrink wrap. These methods are more environmentally friendly, as shrink wrap can create a lot of plastic waste and be difficult to recycle. Here are some alternatives to consider:

• Non-plastic boat coverings: Canvas, fabric, and acrylic coverings are all eco-friendly alternatives to shrink wrap. Canvas, in particular, provides excellent ventilation and can save you money. Companies like West Marine and National Boat Covers sell canvas boat covers, and many will even customise the cover to fit your boat.
• Reusing existing shrink wrap: If you are planning to reuse your shrink wrap, it is important to install it loosely the first time, as applying it too tightly will make it difficult to remove without damaging it.
• Tarpaulins: Tarps are a simple, inexpensive, and reusable solution for protecting your boat. They are available in a variety of materials, including canvas, polyester, nylon, polypropylene, and polyethylene. Polyethylene is the most waterproof option, but high-quality canvas or nylon tarps can also be water-resistant. Be sure to choose a tarp that is durable enough to withstand the winter weather conditions in your area.
• Premium fabric and acrylic boat covers: If you own a luxury boat, you may want to invest in a premium fabric or acrylic cover. Sunbrella, for example, is known for its quality, durability, UV protection, and mildew resistance. Outdura is another option, made from solution-dyed acrylic fabric that is water-repellent and blocks out 98% of the sun's harmful rays.
• Indoor storage: While it can be more expensive, storing your boat indoors is a sure way to avoid the hassle and waste associated with shrink wrap and tarps. You can find indoor storage options at some self-storage facilities or through companies like ExtraSpace Storage.

Frequently asked questions