Quick Answer
To improve rain shedding capability in a tarp shelter, you can tighten the tarp's pitch and ensure that the tarp's edges are securely tied to the frame. Additionally, using a tarp with a waterproof coating and a silnylon or ripstop nylon material can enhance its rain shedding ability. A steep pitch and tightly secured edges are key to a reliable tarp shelter.
Optimizing Tarp Pitch
A steep tarp pitch is crucial for effective rain shedding. Aim for a minimum pitch of 60 degrees, but ideally 70-80 degrees, to allow water to run off the tarp. To achieve this, use multiple stakes to secure the tarp’s edges, and adjust the tarp’s tension by tightening the guy lines.
Securing Tarp Edges
To prevent water from seeping into the shelter through the tarp’s edges, ensure that they are tightly secured to the frame. Use stakes, guy lines, and cord locks to keep the edges in place. Aim to leave about 6-8 inches of edge margin between the tarp and the frame, and use a “burrito” method to roll the excess tarp material over the edge, securing it with stakes or cord locks.
Tarp Material and Coating
Choose a tarp with a waterproof coating, such as silicone or polyurethane, and a durable material like silnylon or ripstop nylon. These materials can withstand harsh weather conditions and will provide a reliable rain shed. Consider a tarp with a built-in UV protection to prevent material degradation over time.
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