Miya Pearson
Sleeping bags are a staple for campers, but it's not uncommon to wake up in a wet sleeping bag. Moisture can accumulate on the exterior of the sleeping bag due to condensation, morning dew, or wet weather conditions. In some instances, moisture accumulation on your sleeping bag is unavoidable. However, you should still take precautionary measures to stay as dry as possible because a dry sleeping bag is a warm sleeping bag. Here are some ways to protect your sleeping bag from getting wet in the first place and what to do if it does.
| Characteristics | Values |
|---|---|
| Sleeping bag type | Down, Synthetic |
| Sleeping bag fabric | Breathable, Waterproof |
| Sleeping bag storage | Dry closet, Hook |
| Sleeping bag protection | Bivy sack, Bag cover, Raincoats, Liner, Second outer sleeping bag |
| Sleeping bag drying | Hang out to dry, Use body heat |
| Sleeping bag condensation | Wipe with absorbent paper, Shake droplets off |
| Sleeping bag maintenance | Wash, Treat with Nikwax |
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What You'll Learn
Use a bivy sack or bag cover
A bivy sack (short for "bivouac sack") is a great way to protect your sleeping bag from rain and morning dew. It is a lightweight, weather-resistant barrier that shields your sleeping bag from the elements. Bivy sacks were invented for climbers who needed lightweight emergency weather protection for their sleeping bags during multiple-day ascents, especially on big walls.
Bivy sacks are typically made with durable, waterproof nylon to protect you from the rain. The bottom tier is made of urethane-coated nylon, while the top tier is made of a lighter, ripstop nylon treated with a waterproof, breathable laminate such as Gore-Tex®. This laminate allows vapour produced by body heat to escape through the fabric, preventing condensation buildup.
To further minimize condensation, keep the zippers open as much as possible, even during downpours. You can "crack" the mesh or zipper to allow ventilation of the condensed air inside. If you are using a bivy sack in very cold weather, you may want to leave the bivy mostly unzipped but flipped over your head for extra warmth.
When choosing a bivy sack, look for one with multiple zipper sliders so you can create armholes, allowing you to sort gear or cook while staying protected. Factory-sealed seams, straps to secure your sleeping pad, and mesh panels attached to the head opening are also desirable features.
Some budget-friendly options for bivy sacks include the SOL Escape, which offers excellent weather resistance and added warmth. However, it may be too small for individuals taller than 5'11". If you are very uncomfortable in tight spaces, you may want to opt for a tent instead of a bivy sack.
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Choose a breathable fabric
When choosing a sleeping bag for wet weather, it is important to select one with a breathable fabric. Breathable fabrics are designed to allow water vapour to pass through, limiting moisture buildup while remaining waterproof from the outside. This is crucial as moisture accumulation on your sleeping bag due to condensation, morning dew, or wet weather conditions is common.
Breathable fabrics are particularly important if you plan to engage in physical activities that will make you sweat. If your sleeping bag is not made with breathable fabric, your perspiration will have nowhere to go, and you will end up feeling clammy and uncomfortable. In addition, moisture can compromise the insulation of your sleeping bag, leading to a colder sleeping environment.
WP/B fabrics are not 100% breathable, and the moisture that gets trapped inside can cause condensation and make your sleeping bag wet. This is why it is recommended to opt for a traditional bag or a non-breathable material like silnylon or cuben for the vapor barrier effect in cold weather conditions.
If you already own a sleeping bag that is not made with breathable fabric, you can take additional measures to protect it from getting wet. This includes using a bivy sack or a bag cover, which can provide protection from rain and morning dew. However, ensure that your cover is breathable to prevent internal condensation from pooling on your sleeping bag.
In addition to choosing a breathable fabric, you can also consider treating your down sleeping bag with a water-resistant coating. This will help it hold up better in humid conditions and dry faster if it does get wet. Synthetic sleeping bags also have the advantage of greater insulating ability when wet, as the synthetic fibres do not clump together, allowing them to continue providing insulation.
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Avoid wiping water droplets off the bag
Water droplets on your sleeping bag are a sign that your water repellent is working. It can be tempting to wipe these droplets off, but you should avoid doing so. When you wipe off the water, you force the moisture through your protective barrier, making your sleeping bag wetter.
Instead, hang your bag out to dry. The water droplets will either roll off or evaporate under the sun, leaving your bag dry and ready for use. If you are in a dry or windy area, this process can take just a few hours.
If you are in a humid environment, you can use a second outer sleeping bag with a synthetic filling. This will move the dew point and prevent condensation inside the main sleeping bag. You can also use a liner inside your sleeping bag to keep it dry.
If you are unable to hang your bag out to dry, you can blot the droplets with super-absorbent toilet paper. You can also try to limit condensation by managing your sleeping clothes and avoiding sleeping "hot".
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Use a liner when backpacking in wet conditions
If you're backpacking in wet conditions, a liner is a great way to protect your sleeping bag from moisture. Sleeping bags can get wet from both precipitation and ambient humidity, so it's important to take precautions to keep yourself and your gear dry.
A liner acts as a protective barrier between your sleeping bag and the elements, helping to keep the bag dry and warm. It is recommended to use a pack liner plastic bag as a bivy bag in cold and wet weather. This will keep your sleeping bag off the ground and away from any potential sources of moisture. If you're in a dry and windy area, you can hang your liner out to dry during the day.
Additionally, choosing a liner made of breathable fabric is important. This allows moisture to evaporate, preventing condensation from building up inside the liner and your sleeping bag. It's also a good idea to avoid wiping away any water droplets that form on the liner, as this can force moisture through the protective barrier and into your sleeping bag. Instead, let the water evaporate or roll off the surface.
Using a liner can also help extend the life of your sleeping bag. By keeping the bag dry, you reduce the risk of mould or other damage caused by moisture. A liner can also provide an extra layer of insulation, helping to keep you warm in cold and wet conditions.
In very wet environments, you may consider using two bags: one to protect your sleeping bag and other gear, and another for your daily essentials. This will ensure that your sleeping bag stays dry and that you have a comfortable and warm place to sleep at the end of the day.
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Store the bag in a dry closet
When it comes to protecting your sleeping bag from wet weather, proper storage is key. Hanging your sleeping bag in a dry closet is one of the best ways to keep it in good condition and ensure it's ready for your next adventure. Here are some detailed instructions to follow:
First, find a suitable closet in your home that is dry and well-ventilated. Make sure the closet is located in an area where the sleeping bag will not be exposed to excessive moisture or humidity. If possible, choose a closet that is temperature-controlled to avoid extreme temperature fluctuations.
Next, prepare the sleeping bag for storage. After each use, allow your sleeping bag to air dry completely before putting it away. Hang it up or lay it out in a well-ventilated area until all moisture has evaporated. This is crucial, as storing a damp sleeping bag can lead to the growth of mould or mildew, which can ruin the bag and pose health risks.
Once the bag is completely dry, inspect it for any dirt or debris. If necessary, gently clean the bag according to the manufacturer's instructions. A clean sleeping bag will not only maintain its appearance but also function better during your outdoor adventures.
Now, it's time to hang the bag in the closet. Many sleeping bags come with special straps or loops designed for hanging. Utilize these features to hang the bag on a sturdy hook or hanger. Ensure that the bag is securely fastened and not strained or stretched. If your sleeping bag doesn't have hanging straps, consider purchasing some hanging storage solutions specifically designed for sleeping bags.
Lastly, maintain the closet's dryness and ventilation. Check on your sleeping bag periodically to ensure the closet remains dry and well-ventilated. Avoid storing items that could leak or spill near the sleeping bag, as moisture can lead to damage and affect the bag's insulating properties. Keeping the closet tidy and organized will also help you quickly identify any potential sources of moisture.
By following these steps, you can effectively protect your sleeping bag from the elements and ensure it stays dry and ready for your next outdoor excursion. Proper storage in a dry closet will extend the lifespan of your sleeping bag and enhance your camping experiences for years to come.
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Frequently asked questions
You can protect your sleeping bag from wet weather by using a waterproof cover, such as a bivy sack, or a bag liner.
To protect your sleeping bag from condensation, you can use a second outer sleeping bag with a synthetic filling. This will move the dew point and prevent condensation inside the down layer.
Some tips for keeping your sleeping bag dry include avoiding sleeping "hot", shaking off any visible droplets, and hanging your bag out to dry when it gets wet. It is also important to properly store your sleeping bag between trips.
If your sleeping bag gets wet, you can try to dry it by hanging it out in the sun and wind. You can also use a liner or a second bag to protect your sleeping bag and provide additional warmth.
