Chloe Zhang
Kayaks are made from various types of plastic, including polyethylene and Royalex, which are softer and heavier plastics. Polyethylene comes in many grades, including high-density, medium-density, and low-density, each with its advantages and disadvantages. The type of plastic used in a kayak is essential as it determines the kayak's durability and resistance to scratches and dents, as well as UV damage. While polyethylene kayaks can be protected from UV damage with a UV protectant, some cleaning products may contain chemicals that are harmful to plastic in the long term. Therefore, it is important to consider the potential impact of cleaning products, such as 409, on the plastic of a kayak.
| Characteristics | Values |
|---|---|
| Plastic kayaks deform very easily | Sagging under their own weight when hung from grab loops |
| Plastic kayaks are durable | Resistant to wear and tear from paddling or portaging |
| Plastic kayaks are prone to UV damage | UV rays cause plastic to become brittle and faded over time |
| Plastic kayaks require maintenance | Regular cleaning, lubrication, and protection from UV radiation |
| Plastic kayaks should be stored properly | Hanging with straps, not grab loops; storing indoors and out of sunlight |
| Plastic type varies | Polyethylene (PE) with grades like HDPE, MDPE, LDPE, and LLDPE |
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What You'll Learn
Plastic kayaks are susceptible to UV damage
Kayaks are usually made of polyethylene, an otherwise extremely durable material that can be damaged by the sun. Plastic kayaks are susceptible to UV damage, which can cause significant harm over time. The sun's UV rays can cause the plastic in kayaks to fade, become brittle, and more susceptible to cracking. This process can take years, but the damage can be mitigated by taking some preventative measures.
The UV rays from the sun can break down the plastic that kayaks are made of, causing them to become brittle over time. This is because the UV rays fade and break down the plastic, causing it to lose its flexibility and become more fragile. The damage is worse if the kayak is stored outside in direct sunlight, as the plastic will degrade faster when exposed to the elements. Even if a kayak is stored indoors, it can still be damaged by UV rays if it is kept near a window or another source of natural light.
One way to protect your kayak from UV damage is to store it properly. Keeping your kayak out of direct sunlight when storing it is the best way to prevent UV damage. Storing your kayak upside down and off the ground can also help to protect it from the sun's rays. Additionally, you can use a kayak cover to protect your kayak from the sun. A full kayak cover will protect the entire body, while a cockpit cover will keep the inside of your kayak clean and dry.
Another way to protect your kayak from UV damage is to use a kayak protectant spray. This spray is applied directly to the kayak, just like sunscreen, and helps to deflect the sun's rays. It is easy to apply and relatively inexpensive, making it a great option for protecting your kayak from UV damage. Proper storage and protection are crucial in preventing UV damage to plastic kayaks.
There are some signs to look out for to determine if your kayak has been damaged by UV rays. One indication is the colour of the kayak; if it has faded or turned a different shade, it may have been affected by UV rays. Additionally, if the plastic has become brittle or cracked, this is a sure sign of UV damage. Regular inspection of your kayak for such signs is essential to ensure its longevity.
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Kayaks should not be hung from grab loops
Kayaks are big and bulky, and storing them can be challenging. However, proper storage will keep your kayak in good condition and protect it from damage. Plastic kayaks are durable, but they can deform easily. To prolong the useful life of your plastic kayak, it is important to avoid common storage mistakes. One of the things to avoid when storing your kayak is hanging it from its grab loops.
When a plastic kayak is hung from its grab loops, it tends to sag under its own weight, pulling down in the middle and causing it to develop a banana shape. This can be avoided by using straps to hang the kayak instead. Wide webbing straps can be purchased as part of a suspension system or made at home. To best protect the hull, the kayak should be hung so that the hull faces up toward the ceiling.
It is also important to consider the location of your stored kayak. Keeping it indoors offers the best protection, but this is not always practical. If stored outdoors, the kayak should be protected from sun exposure and other weather conditions. The ultraviolet rays that accompany bright sunlight can degrade kayak hull materials, including plastic, causing it to become brittle over time. Additionally, consistent exposure to moisture from rain and snow can cause hull materials to degrade over time.
To avoid damage caused by sunlight and moisture, consider storing your kayak in a garage, shed, or another indoor space. Keeping your kayak clean is also important for its maintenance. Before storing it away, give it a rinse with freshwater to remove any dirt, sand, salt, or grime. A couple of times a year, wash the boat with a mild soap and water mixture, avoiding solvents or strong chemicals that could damage it.
By following these storage guidelines, you can help prolong the life of your plastic kayak and ensure that it remains in good condition for your paddling trips.
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Kayaks should be protected with wax or UV protectant
Kayaks are made of durable material, but they can get damaged over time. Plastic kayaks are susceptible to UV damage from the sun, which can cause them to become brittle and faded. Therefore, it is important to protect them with a UV protectant or wax.
UV rays can cause significant damage to plastic kayaks, breaking down the plastic and making it brittle over time. This can lead to the kayak becoming deformed and unusable. The sun is particularly harsh on kayaks stored outdoors, but even indoor storage doesn't guarantee protection from UV damage. Additionally, saltwater exposure can also be harmful, so it is important to rinse the kayak with clean water after each use.
To protect your kayak from UV damage, you can apply a UV protectant spray or wax. A UV protection spray can be used on all types of kayaks, whether plastic or composite. It adds an extra layer of protection to minimise the risk of UV damage. Make sure your kayak is completely dry before applying the spray. You can also use wax, such as marine-grade wax or car wax, on your kayak for protection. However, wax may not stick well to polyethylene, which is a common material used in plastic kayaks.
Some popular UV protectants include 303 Aerospace Protectant and F21 (formerly known as Turtle Wax 2001). These products are designed to prevent fading caused by sun exposure and can be applied a few times a year or before storing your kayak. It is recommended to follow the instructions on the product you choose and consider the material of your kayak to ensure compatibility.
In addition to UV protection, proper storage of your kayak is crucial. Avoid hanging your kayak from its grab loops as it can cause sagging and deformation. Instead, use straps to hang it securely. If you store your kayak outside, cover it to protect it from the elements. Regular cleaning and maintenance will also help extend the life of your kayak.
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Plastic kayaks are prone to superficial scratches
Kayaks made of polyethylene plastic are very durable and are a good choice for beginners or anyone who wants a kayak that is not prone to cracking. They are also very light, making them a good choice for small, lightweight kayaks. However, one of their common problems is that they can get scratched very easily, especially if used in rough waters.
All kayaks and canoes made of various plastics will scratch and dent on rocks and other shore debris, but boats made of polyethylene are particularly prone to superficial and cosmetic scratches. Their main strength is in hard impacts, from which they tend to merely bounce off, which is why nearly all whitewater and rental boats are made of polyethylene.
There are many simple but effective ways to smooth out scratches on polyethylene kayaks. For example, use a household polish to clean the area, use a silicone-based sealant to protect the area from water and UV damage, or use a kayak scratch remover. You can also apply a layer of clear coat over the scratch using a brush or sprayer. Let it dry for at least two hours before applying any additional coats if necessary.
If you want to remove the excess plastic on each side of a scratch, you can use a simple razor scraper or a snowboard or ski wax scraper to gently scrape off and remove any curls of plastic below the water line. This won't remove the scratch itself but will help smooth out the hull.
To avoid scratches, always use a kayak cover when the kayak is not in use, clean your kayak with mild soap and warm water, and avoid using abrasive cleaners or scouring pads.
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Polyethylene kayaks become brittle, not soft
Polyethylene kayaks are made from a type of plastic called rotomolded polyethylene. They are the least expensive, heaviest, and require very minimal kayak maintenance. Most recreational and whitewater kayaks are made from this material. Polyethylene is also used in inflatable kayaks or soft-sided kayaks. These types of kayaks are lightweight and easy to transport, as they can be deflated and packed into a small carrying bag.
However, one of the biggest drawbacks of polyethylene kayaks is that they become brittle over time due to UV exposure. The sun is a plastic kayak's worst enemy, as the UV rays fade and break down the plastic, causing it to become brittle and prone to cracking. This can be mitigated by using a protective spray to reduce the harmful effects of UV light, such as 303 Aerospace Protectant. Leaving kayaks in the water for extended periods can also lead to sun damage, so it is recommended to store them under covers or tarps when not in use.
While polyethylene kayaks can withstand hard impacts and are less prone to deep gouges, they are still susceptible to superficial and cosmetic scratches. Over time, a plastic kayak will show signs of normal use, wear, and tear. Proper storage is crucial to prevent hull deformities and brittleness. Hanging a kayak using straps is recommended, but not from the grab loops as it can cause the kayak to sag and develop a banana shape.
In summary, polyethylene kayaks become brittle due to UV exposure and are prone to superficial scratches and normal wear and tear. With proper maintenance and storage, the negative effects of UV exposure can be reduced, and the lifespan of the kayak can be extended.
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Frequently asked questions
No, 409 should not be used on a plastic kayak. It is important to use a cleaner that is specifically designed for kayaks and canoes made of plastic.
Most kayaks are made of polyethylene, a type of plastic that is rotomoulded. Polyethylene comes in different grades, including High Density (HDPE), Medium Density (MDPE), and Low Density (LDPE).
A quality automotive wax or UV protectant spray designed for kayaks is recommended to protect the kayak from UV damage and keep it in good condition.
It is recommended to clean your kayak after each use and to apply a UV protectant or wax periodically, especially during the spring and summer months when UV exposure is higher.
