Protect Your Boat: Use A Tarp Over The Cover

Tarping a boat is a contentious issue among boat owners. Some say it's a great way to protect your boat from the elements, while others argue that it can do more harm than good. So, should you put a tarp over your boat cover? The answer depends on several factors, including your budget, storage space, and the type of boat you own.

Boat covers are typically made from breathable materials such as canvas or polyester, which allow air to circulate and prevent moisture buildup. They are also custom-fit to the boat's make and model, providing maximum protection against weather damage. However, they can be expensive, ranging from $200 to $400.

On the other hand, tarps are a more economical option, with heavy-duty tarps made from materials like polyethylene or canvas offering the best protection. They are suitable for urgent situations and can be used as a second layer of defence when storing your boat in an enclosed structure. Yet, they often don't fit boats sufficiently and are challenging to secure. Tarps are also made from non-breathable materials, which can trap moisture and condensation underneath, leading to mold and mildew growth.

Ultimately, the decision to use a tarp over your boat cover depends on your specific needs and circumstances. If you're looking for a cost-effective solution and are confident in your ability to properly secure the tarp, it may be a viable option. However, if you want maximum protection for your boat and are willing to invest in a high-quality cover, a custom-fit boat cover is likely the better choice.

Advantages of a tarp over a boat cover

While it is generally advised to use a high-quality boat cover made from breathable materials such as canvas or polyester, there are some advantages to using a tarp over your boat cover in certain circumstances. Here are some advantages of using a tarp over a boat cover:

Cost-Effectiveness

Tarps are typically much cheaper than custom-fit or high-quality boat covers. If you are on a tight budget, a tarp can provide an affordable solution to protect your boat.

Additional Layer of Protection

In some cases, adding a tarp over your boat cover can provide an extra layer of protection, especially if your boat is stored outdoors and exposed to the elements. This extra layer can help shield your boat from rain, snow, and UV damage.

Ease of Use

Tarps are generally easier to handle and store than custom-fit boat covers. They can be quickly thrown over your boat and secured with ropes or bungee cords, making them convenient for temporary protection during storms or when your boat is not in use.

Versatility

Tarps can be used for multiple purposes beyond just covering your boat. You can reuse them for other projects, such as covering firewood or protecting outdoor equipment. This versatility means you can get more value from your purchase.

Suitability for Enclosed Storage

If you plan to store your boat in an enclosed structure, such as a garage, a tarp can be an excellent and cost-effective solution. It provides an additional layer of protection without the need for a custom-fit boat cover.

Protection During Emergencies

In urgent situations where your boat needs to be covered immediately, a tarp can be a quick and practical solution. It may not offer the same level of protection as a custom cover, but it can provide temporary shelter until a more permanent solution is available.

Disadvantages of a tarp over a boat cover

Tarps are a cost-effective solution for covering your boat, but they come with several disadvantages. Here are some reasons why you may not want to use a tarp as a boat cover:

• Poor ventilation: Tarps do not provide adequate ventilation, which can lead to the development of mold and mildew on your boat. This is a common issue, and preventive measures must be taken to mitigate the risk.
• Lack of durability: Tarps, especially cheaper ones, are not as durable as custom boat covers. They may only last a season or two, whereas a form-fitted boat cover can last for 5+ years with proper care.
• Insufficient coverage: Tarps often do not cover a boat sufficiently and can be challenging to secure. They are more likely to rub against the covers/hull, especially around the windshield, potentially causing damage.
• Difficult to secure: Tarps can be challenging to secure properly, especially if you are using multiple tarps. Joints between tarps can catch the wind or allow water to get in.
• Water pooling: Low spots on a tarp can collect water, which can degrade the waterproofing and lead to leakage. This can be mitigated by using poles or other structures to drape the tarp and allow water to flow to its edges.
• Aesthetic concerns: Tarps may not look as nice as custom boat covers, and they can be noisier in the wind. This may be an issue if you are concerned about the appearance of your boat or if you want to avoid attracting attention.
• Scratchiness: Tarps can be scratchy and may damage the gel coat of your boat over time.
• Heat retention: Tarps can trap heat, making the inside of your boat uncomfortably warm and potentially contributing to the growth of mold and mildew.

Preparing your boat for tarping

• Measure Your Boat: Before purchasing a tarp, accurately measure the length and width of your boat, accounting for any vertical protrusions or indentations. It is better to err on the larger side to ensure complete coverage.
• Choose the Right Tarp: Select a high-quality, waterproof tarp that fits your boat's size and shape. Heavy-duty tarps made from materials like polyethylene or canvas offer the best protection.
• Protect Sharp Edges: Cover any sharp structures, such as antennas or windshield frame corners, with a more resistant material like rags or old pieces of carpet. Secure them with duct tape to prevent puncturing the tarp.
• Ensure Proper Placement: Drape the tarp to minimise low spots where water can collect. Use telescopic poles or blunt poles to prop up the tarp and allow water to flow off the sides of the boat.
• Ventilation and Mould Prevention: Apply moisture-absorbing products under the tarp and regularly clean and dry it to prevent mould and mildew. Re-apply waterproofing material as needed.
• Secure the Tarp: Ensure the tarp is securely fastened to withstand strong winds and severe weather. Use grommets, weighted objects, webbed tie-down straps, or rope ratchet devices to secure the tarp.
• Regular Maintenance and Inspection: Inspect your tarp at least monthly for any signs of damage or degradation. Ensure the tarp remains fastened and minimise low spots to prevent water collection.

Selecting the right tarp for your boat

Tarps are a great way to protect your boat from the elements, but not all tarps are created equal. In this guide, we'll go over the different types of tarps available and how to choose the right one for your boat.

Types of Tarps:

• Polyethylene Tarps: These tarps are made from a waterproof, strong, and durable synthetic material that is resistant to tears and weather damage. They are relatively lightweight and easy to transport, making them a popular choice for boat owners.
• Vinyl Tarps: Vinyl tarps are made from a heavy-duty material that is waterproof and UV resistant. They are ideal for protecting your boat from the elements and providing shelter during bad weather.
• Waterproof Canvas Tarps: These tarps are made from a hybrid canvas and polyester fabric that is breathable and very weather resistant. They are strong and durable, making them suitable for covering your boat, using as a shelter, or protecting other accessories.
• Marine-Grade Canvas Tarps: Marine-grade canvas tarps are made with waterproof acrylic material that is designed specifically for boats, canopies, pergolas, and gazebos. They come in a variety of vibrant colors and offer excellent protection against UV rays.

Factors to Consider when Selecting a Tarp:

• Size and Shape: Choose a tarp that is large enough to completely cover your boat, with some extra material to ensure full coverage.
• Material: Consider the type of material that best suits your needs. Poly tarps are lightweight and easy to transport, while vinyl and canvas tarps offer more heavy-duty protection.
• Fastening System: Select a tarp with a secure fastening system to keep it in place during strong winds. Look for tarps with grommets around the perimeter for easy tying down.
• Ventilation: Tarps can trap moisture and lead to mold and mildew. Choose a tarp with built-in vents or use moisture-absorbing products to prevent moisture buildup.
• Custom-Fit: Custom-fit covers or custom-made tarps are tailored to your boat's specific dimensions, ensuring a snug fit and maximum protection.

Maintenance and Care:

To extend the life of your tarp and keep your boat protected:

• Regularly clean and inspect your tarp, removing any dirt, debris, or bird droppings.
• Promptly repair any tears or wear to maintain the tarp's integrity.
• Store your tarp properly when not in use by folding or rolling it carefully to prevent creases or weak points.
• Use support poles or a cover support system to prevent water pooling and sagging, which can lead to tears.

Securing the tarp

Tarping a boat is a common practice, especially for those with small boats without large consoles or tops. It is also a more economical option compared to custom-fit covers or wrapping. However, tarps often don't provide sufficient coverage and can be challenging to secure.

Choose the Right Tarp:

Select a heavy-duty, waterproof tarp made from materials like polyethylene or canvas. Ensure it is large enough to cover the entire length and width of your boat, with some extra material for complete coverage.

Prepare the Boat:

Before placing the tarp, it is essential to prepare your boat properly. Start by padding sharp edges to reduce the chance of puncturing the tarp. You can use items like pool noodles, old towels, or foam pipe insulation. Avoid using adhesive tape as it may leave a residue if exposed to sunlight.

Ensure Proper Placement:

When placing the tarp, pay attention to low spots as they can collect water, potentially degrading the tarp's waterproofing. Drape the tarp to allow water to flow towards its edges. You can use rubber-capped telescopic poles or alternative support products to create a tent-like structure and minimise sagging.

Secure the Tarp:

Look for tarps with sewn-in grommets around the perimeter. Fasten cordage to these grommets and secure the other end to heavy weights or fixed objects. You can also use webbed tie-down straps with quick-release fasteners or rope ratchet devices, but use caution as these can apply excessive force and loosen or tear out grommets.

Maintain and Inspect Regularly:

Regular maintenance and inspection of your tarp are crucial to ensure its effectiveness. At least once a month, inspect the tarp for any tears, rips, holes, or other signs of degradation, especially over sharp edges. Ensure the tarp remains securely fastened and minimise low spots to prevent water collection.

Consider Ventilation:

Tarps generally do not lend themselves well to ventilation, which can increase the risk of mould and mildew. To mitigate this, apply moisture-absorbing products like desiccants under the tarp and empty them frequently. Additionally, clean and treat the tarp regularly using mild detergent, waterproofing material, and following the care instructions.

Frequently asked questions