Quick Answer
Tarps can catch wind like a sail if they are not properly secured, weighed down, or angled. This can lead to significant damage, injury, or even loss of shelter. To prevent this, ensure your tarp is secured with multiple anchor points and weighed down with sufficient rocks, logs, or sandbags.
Securing the Tarp
To begin, select multiple anchor points on the tarp and attach them to sturdy objects such as trees, poles, or rocks using rope, cordage, or webbing. The ideal number of anchor points is three or more, spaced at least 6-8 feet apart. This will distribute the wind load evenly and prevent the tarp from shifting or catching wind. Additionally, make sure the anchor points are at a height that allows the tarp to slope away from your shelter.
Weighing Down the Tarp
Weighing down the tarp is crucial to prevent it from catching wind. Use rocks, logs, or sandbags to achieve a minimum of 10-20 pounds per anchor point. The weight will help to prevent the tarp from shifting and reduce the likelihood of wind damage. When using rocks, ensure they are securely placed and won’t roll away in windy conditions.
Angling the Tarp
Properly angling the tarp is also essential to prevent wind damage. Aim for a slope of at least 30-40 degrees, with the center of the tarp slightly higher than the edges. This will help to channel wind around and under the tarp, reducing the risk of it catching wind. When possible, use a ridgepole or a centerline to help maintain the tarp’s angle and prevent it from sagging or flapping in the wind.
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