Best Fabrics To Cover And Protect Boats In Winter

When the sailing season ends, it's time to start thinking about how to protect your boat during the winter months. A good boat cover will keep your boat safe from damage caused by winter weather, animals, and debris. There are several types of fabrics that can be used for boat covers, each with its own advantages and disadvantages. In this article, we will discuss the different types of fabrics available and provide guidance on choosing the right fabric for your boat.

Waterproof vs water-resistant fabric

When choosing a fabric to cover a boat for winter, it is important to consider the difference between waterproof and water-resistant fabric. While these terms might seem interchangeable, they have distinct characteristics that determine their effectiveness in protecting boats.

Waterproof fabrics are typically made of vinyl, vinyl-coated, or laminated materials. They are designed to repel water completely, even when the fabric is old. Waterproof fabrics provide a reliable barrier against water seeping through and causing damage to the boat, such as mould or rot. However, one significant trade-off of waterproof fabric is breathability. Due to their impermeable nature, they do not allow air circulation, which can lead to trapped moisture and the growth of mould and mildew. To mitigate this issue, it is recommended to add boat cover vents to waterproof fabrics. Examples of waterproof fabrics suitable for boat covers include Stamoid™ 8.3 oz. and Herculite Riviera®.

On the other hand, water-resistant fabrics are treated to repel water but do not inherently prevent it from soaking through. Over time, the coating on water-resistant fabrics can wear away, allowing water to leak through. Additionally, they may not be as effective in preventing water from pooling on their surface. However, water-resistant fabrics offer breathability, which is advantageous in preventing moisture buildup. If you opt for a water-resistant fabric, ensure that the cover is pitched properly using support poles to avoid water pooling. Examples of water-resistant fabrics for boat covers include Sunbrella® Marine Grade, Sattler® Marine Grade, Top Notch® 9, and SureRite™.

It is worth noting that some fabrics, such as Top Gun®, Top Gun® 1S, and Odyssey®, fall somewhere between water resistance and waterproofness. These fabrics are nearly waterproof but offer marginal breathability, making them suitable for covers with proper ventilation.

When selecting a fabric for a boat cover, it is crucial to consider factors such as water resistance, fabric weight, durability, UV resistance, breathability, and maintenance. The ideal fabric will depend on your specific needs, such as the boat's storage location, the climate, and your budget. Consulting with professionals or experienced boat owners can provide valuable insights to make an informed decision.

Breathability

Breathable fabrics, on the other hand, allow moisture to escape through the cover, preventing moisture buildup and ensuring proper ventilation. This is especially important if your boat will be stored in an area with high humidity or if it has custom components that need protection from moisture as well as sunlight.

Some fabrics that are commonly used for boat covers offer a balance between water resistance and breathability. For example, Top Gun®, Top Gun® 1S, and Odyssey® are fabrics that are almost waterproof but still offer some breathability. However, these fabrics should still be vented to ensure adequate ventilation.

If you prioritise breathability over waterproofness, you can choose a water-resistant fabric for your cover. Fabrics like Sunbrella® Marine Grade, Sattler® Marine Grade, Top Notch® 9, and SureRite™ are breathable and water-resistant. Just be sure to give your cover a good pitch using support poles to prevent water from pooling. You may also need to re-treat the cover after a few years or after washing to restore its water repellency.

In addition to breathability, it is important to consider other factors such as the weight, colour, and UV protection of the fabric when making your decision. The weight of the fabric should be appropriate for the size of your boat, with heavier fabrics providing more protection for larger boats. The colour of the fabric can also affect the temperature inside the cover, with lighter colours reflecting sunlight and keeping the interior cooler, while darker colours absorb heat and keep the interior warmer. Finally, look for fabrics that provide UV protection to prevent fading and damage from the sun's rays.

Weight of the fabric

The weight of the fabric is an important consideration when choosing a boat cover. If you will be putting on and removing the cover frequently, a lighter weight fabric is more suitable. Lighter fabrics are also preferable if you need to fold and store the cover in a small space. However, if durability is a priority, a heavier fabric will be more suitable.

The weight of boat cover fabric is typically measured in denier, which refers to the thickness of individual threads. Higher denier values indicate a thicker, sturdier, and more durable fabric. For example, a 600D fabric is twice as strong as a 300D fabric, and a 1200D fabric is twice as strong as a 600D fabric.

Boat cover fabrics made from polyester are often described in denier, while acrylic fabrics are usually described in ounces. For instance, Sunbrella, a well-known manufacturer of acrylic fabrics, offers fabrics in weights ranging from 8.3 oz to 12 oz.

When selecting a boat cover fabric, it's important to consider not only the weight but also the breathability and water repellency of the material. While heavier fabrics may offer greater protection, they can also trap moisture underneath, leading to the growth of mold and mildew. Therefore, it's crucial to strike a balance between weight and breathability to ensure effective protection for your boat.

Colour of the fabric

The colour of the fabric for a boat cover is an important consideration, as it can impact the temperature inside the cover. A dark-coloured fabric, such as navy blue, black, or dark green, is better for colder climates as it absorbs heat and keeps the interior warmer. Conversely, a lighter colour will reflect sunlight and keep the interior cooler, which can be beneficial in hotter climates.

When choosing a colour, it is also essential to consider the level of protection needed. While a dark cover can provide warmth, it may not be suitable for all climates. For example, in extremely hot climates, a black cover may cause the interior to become too hot, promoting the growth of mould and mildew. In such cases, a white cover that reflects light and keeps the interior cooler may be more suitable.

Additionally, the colour can impact the aesthetic appeal of the boat cover. Boat owners may prefer a colour that complements the design of their boat or matches their personal taste. Some suppliers offer a range of colours to choose from, allowing boat owners to customise their cover to their preferences.

It is worth noting that the colour of the fabric is just one factor to consider when selecting a boat cover. Other factors, such as the type of fabric, its durability, water resistance, UV protection, breathability, and weight, should also be taken into account to ensure the cover provides adequate protection for the boat during the winter months.

Fabric durability

When it comes to choosing a fabric for a boat cover, there are several factors to consider to ensure durability. Firstly, it is crucial to assess the water resistance of the fabric. Water-resistant coatings or inherently water-repellent properties are essential to prevent water seepage, which can cause mould or rot. Fabrics described as waterproof are usually vinyl, vinyl-coated, or laminated, and will always repel water, even with age. Water-resistant fabrics, on the other hand, are treated to prevent water from soaking through but may leak over time or when water pools on the surface.

The weight of the fabric is another important consideration. If you plan to frequently install and remove the cover, a lightweight fabric such as AquaTop Air is recommended for ease of use and convenience during cleaning and storage. However, for long-term durability in harsh environments and frequent travel, a heavier fabric is more suitable. Heavyweight fabrics like AquaTop SubZero are ideal for cold climates with significant snowfall.

Coated polyester is a popular choice for boat covers due to its durability, water resistance, mildew resistance, and UV protection. The coating enhances tear and abrasion resistance while also preventing fading from sunlight exposure. Additionally, coated polyester is easy to clean and maintain.

Acrylic marine fabric is another reliable option, offering breathability, durability, resistance to UV rays, and mould and mildew resistance. Acrylic fabrics are available in a range of vibrant colours that resist fading and maintain their appearance over time. However, they may require treatment to improve abrasion resistance.

For maximum durability, consider a solution-dyed marine fabric. This high-performance option has colour permeating the fabric, resisting fading and wear and tear while providing protection against UV rays, water, mould, and mildew. Synthetic materials like polyester or acrylic are often treated for enhanced water resistance and breathability.

When selecting a fabric for your boat cover, it's important to weigh your specific needs and preferences. Consider the climate, storage conditions, and the level of protection required for your boat. By choosing a high-quality, durable fabric, you can ensure the longevity of your boat cover and protect your investment.

Frequently asked questions