Hammock Water Breaks and Drip Lines

Make sure that your water break or drip line is protected under your tarp!
Make sure that your water break or drip line is protected under your tarp!

Any exposed portion of your tarp or hammock suspension can convey water during a rain storm (or other precipitation). Using a water break or drip line will help prevent water from seeping down your suspension line and soaking your hammock.

(Hammock Water Breaks and Drip Lines Video)

In my testing, I found that most hardware devices are not 100% effective as I had originally thought. I was a little disappointed to find that some hardware devices were only good in certain conditions, and if there was a slight twist, even small amounts of water flow easily past the water break and continue down the suspension.

The only thing that worked 99.9% of the time was a simple string tied to the suspension. The best method was to tie a Prusik or Klemheist knot, which provided a firm connection to the suspension and helped divert the water the best. My recommendation is to add a simple string to your suspension, regardless of what suspension system you use.

Regarding Tarps

If you use a continuous ridge line to tie up your tarp, you have the option of running the line over or under the tarp. In times past, I have recommended running the line under the tarp in certain adverse conditions. I now do not recommend this at all. I highly recommend always running a continuous ridge line over the tarp for the best drip protection, among other advantages.

Last year during a very wet and rainy camping trip, I awoke with a start after feeling a drip of cold water on my face. Feeling around in the dark, I also felt pools of water on my sleeping bag. Camping with the Boy Scouts, I half expected to see my scouts trying to play a prank, but I was stunned to see a large quantity of water forming under my tarp that was dripping constantly on my sleeping gear.

At first, I worried my tarp had a leak, but after inspecting the tarp, I found that water was running down the tarp ridge line and then flowing under the tarp, adhering to the ridge line that was also running under the tarp. Unwittingly, I had provided a conveyance for the water, and as it hit certain low points on the tarp, it would cohere and then drip down the inner part of the tarp.

A Continuous Ridge Line for a Tarp using Two Carabiners

I learned a lot about water on that trip. I don’t think I’ve ever camped in such a wet  camp nor had this type of saturation. The rain was so constant that the tree trunks were running with water and it looked like someone had turned on a hose and stuck it on my hammock and tarp suspension; it was flowing that thick and strong.

Thankfully, the water break on my hammock suspension did its job, but I realized that I also needed to do something similar with my tarp. By running my continuous ridge lines over my tarp, I have solved nearly all those issues. I also prefer to use simple hardware devices such as the LoopAlien or the Dutchware Stingers that provide a hardware water break as well.

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56 responses to “Hammock Water Breaks and Drip Lines”

  1. Nick Avatar
    Nick

    Derek, great job on everything you do. You should try to do an AMA on reddit someday in the hammock/camping/gear subs!

  2. […] to get the tarp as close to the hammock as possible without the two actually touching. Also set a simple drip line to prevent water from running down the suspension […]

  3. Mark Avatar
    Mark

    Hi, what diameter do you use for your drip line? Do you think there is a minimum gauge difference between the main and drip lines?

    1. Derek Avatar
      Derek

      Excellent question! I haven’t researched this, but in my testing I used a thicker diameter line. My hypothesis would be that thicker is better, and more absorbent is better (nylon, cotton).

  4. Steve Paesani Avatar
    Steve Paesani

    my thoughts exactly. not that i knew anything about cohesion, adhesion, tension and gravity. just that the string was at hand 😉

  5. Mb Avatar
    Mb

    When you use a prusik knot at one end, are you making that knot out of a separate cord or out of the ridgeline itself? I can’t quite tell from the illustration and I’m new to this. Thank you.

    1. Derek Hansen Avatar

      It’s a separate piece of string.

      1. Mb Avatar
        Mb

        Thank you. So how do you adjust the ridgeline? Sliding the knot along both parts of the loop, or pulling one part of the ridgeline cord? Sorry for the very basic questions but I’m practicing in my yard with two trees and I’m not sure I’m doing it correctly. Thanks again for your expertise and time. I’m going to buy your book but I suspect it doesn’t answer this basic of a question. I’ve slept outside in my camping hammock many times in many places but I’ve never rigged a tarp over it.

        1. Derek Hansen Avatar

          Now you have me confused. Are you asking a drip line question or a tarp rigging question? It may be faster to email. Send me a message at derek@theultimatehang.com

  6. Alv Avatar
    Alv

    Hi Derek, you have great illustration. I noticed in your illustration you have a adjustable Prusik using the same cord as your ridge line . How did you do that?

    1. Derek Hansen Avatar

      I’m not sure I understand your question. Tying a prusik is pretty basic and just loops over the line.

      1. Mb Avatar
        Mb

        I’m sure the reason for the question is that all directions one finds for tying a prusik specify that the prusik cord be only 1/2 as thick as the main line. For example:

        https://www.netknots.com/rope_knots/prusik-knot

        1. Derek Hansen Avatar

          Gotcha. Yeah, that advice is really important in climbing situations, but for small gauge tarp applications, it’s not much of an issue. In my own experience, using line of the same diameter has worked fine. Sheathed line has a better bight, and smaller diameter can be helpful, but because the tension is less than in climbing situations, it doesn’t have the slipping issue. Dyneema line can be more problematic, but I often just use additional wraps and snug it up.

  7. troubito Avatar
    troubito

    Re: drip lines for straps
    see how this guy does it: https://www.youtube.com/watch?v=zfSDmN5r5i4

  8. Caleb Avatar
    Caleb

    Derek, I had a thought about drip lines. What about using a LoopAlien? My current configuration is a continuous loop with strap an Becket Hitch. I am envisioning making a bit with the continuous loop and going through the large eye of the LoopAlien and over the medium peg. My LoopAliens have not arrived yet, so I cannot try it.

    1. Caleb Avatar
      Caleb

      *water break, not drip lines.