Page 1 of 3 123 LastLast
Results 1 to 10 of 24

Thread: Vapor Barriers

  1. #1
    Member Jolly's Avatar
    Join Date
    Nov 2012
    Location
    New York
    Hammock
    Wilderness Logics Snipe
    Tarp
    HG Cuben w doors
    Insulation
    HG UQ, ZPacks TQ
    Suspension
    Anchors/Amsteel
    Posts
    69

    Vapor Barriers

    I hear a lot of talk about vapor barriers, especially in the colder climates. I tried using a space blanket once on a mid-20'F night, placed inbetween my double layers on the WBBB, and whilst it kept my UQ free from moisture, it created moisture above it between the blanket and my back - I got cold through the night because of it.

    What did I do wrong?

    Can someone give me a 101 insight into vapor barriers, their use, and why one should consider using one?

    Thank you in advance.

  2. #2
    dragon360's Avatar
    Join Date
    Nov 2010
    Location
    Toronto, ON
    Hammock
    WBBB/TR, DIY, HH, SB DL, GT UL
    Tarp
    ID/OES/WB/WL
    Insulation
    HG/WB/Go-Lite/WB
    Suspension
    Whoopie/Straps/DW
    Posts
    6,389
    Images
    1
    Andrew Skurka has a write up on them on his site in the Blog section. Might be worth the look.
    The key to immortality is first living a life worth remembering. - St. Augustine

    Some people feel the rain. Others just get wet.
    - Bob Marley

  3. #3
    Senior Member breyman's Avatar
    Join Date
    Aug 2012
    Location
    Denver, CO
    Hammock
    WBRR, WBBB XLC
    Tarp
    Superfly
    Insulation
    Variety of Quilts
    Suspension
    Whoopie/Dutch Hook
    Posts
    1,955
    +1 on Andrew's article. It's a great summary:
    http://andrewskurka.com/how-to/vapor...y-application/

    Based on your brief description, it sounds like the vapor barrier did exactly what it was supposed to do. Keep the moisture in and not let it out to the insulative layers that can then have issues if they collect too much moisture without the opportunity to dry out.

    It's tough to give a lot of advice without knowing more about your circumstance (what you were wearing, etc.). Many folks will wear a very light layer between their skin and vapor barrier to keep some of that claminess away. If you were getting cold because of the extra moisture inside, you might need to either get a warmer UQ, place one or two wool layers over you or consider hot water bottle, etc. to help keep you warmer even with the dampness. Oftentimes, folks will wear vapor barrier clothing to help keep that moisture a little closer to the skin, which when layered over can cause fewer warmth issues.
    Brian
    Denver, CO
    Father. Husband. Scoutmaster.

  4. #4
    Senior Member Tendertoe's Avatar
    Join Date
    May 2010
    Location
    Columbus, OH
    Hammock
    WBRR
    Tarp
    Superfly
    Insulation
    HG
    Suspension
    webbing and rings
    Posts
    1,492
    Some additional reading from our own HF members may be of some help.

  5. #5
    Senior Member breyman's Avatar
    Join Date
    Aug 2012
    Location
    Denver, CO
    Hammock
    WBRR, WBBB XLC
    Tarp
    Superfly
    Insulation
    Variety of Quilts
    Suspension
    Whoopie/Dutch Hook
    Posts
    1,955
    Quote Originally Posted by Tendertoe View Post
    Some additional reading from our own HF members may be of some help.
    That's a great link and something I hadn't seen before. Thanks for sharing. It reminded me of a good point. If you have just the VBL below you, it could be a bit more damp feeling. For a VBL to be most effective from a warmth standpoint, you need to surround yourself in one - without that, the claminess/coolness feeling increases.
    Brian
    Denver, CO
    Father. Husband. Scoutmaster.

  6. #6
    Member Jolly's Avatar
    Join Date
    Nov 2012
    Location
    New York
    Hammock
    Wilderness Logics Snipe
    Tarp
    HG Cuben w doors
    Insulation
    HG UQ, ZPacks TQ
    Suspension
    Anchors/Amsteel
    Posts
    69
    Quote Originally Posted by breyman View Post
    +1 on Andrew's article. It's a great summary:
    http://andrewskurka.com/how-to/vapor...y-application/

    Based on your brief description, it sounds like the vapor barrier did exactly what it was supposed to do. Keep the moisture in and not let it out to the insulative layers that can then have issues if they collect too much moisture without the opportunity to dry out.

    It's tough to give a lot of advice without knowing more about your circumstance (what you were wearing, etc.). Many folks will wear a very light layer between their skin and vapor barrier to keep some of that claminess away. If you were getting cold because of the extra moisture inside, you might need to either get a warmer UQ, place one or two wool layers over you or consider hot water bottle, etc. to help keep you warmer even with the dampness. Oftentimes, folks will wear vapor barrier clothing to help keep that moisture a little closer to the skin, which when layered over can cause fewer warmth issues.
    Excellent article, thank you for linking.

    I can't argue with your assessment; my UQ was certainly unaffected by the moisture trapped by the space blanket, but I remember the following night I removed it completely and slept much more soundly. There was a small build-up of moisture on the inside (top) of the UQ in the morning, though. For short overnighters I'm sure this will be ok, but gradual degradation of the UQ's insulative properties would be a major problem for longer trips.

    Appreciate the heads up, thank you.

  7. #7
    Member Jolly's Avatar
    Join Date
    Nov 2012
    Location
    New York
    Hammock
    Wilderness Logics Snipe
    Tarp
    HG Cuben w doors
    Insulation
    HG UQ, ZPacks TQ
    Suspension
    Anchors/Amsteel
    Posts
    69
    Quote Originally Posted by breyman View Post
    That's a great link and something I hadn't seen before. Thanks for sharing. It reminded me of a good point. If you have just the VBL below you, it could be a bit more damp feeling. For a VBL to be most effective from a warmth standpoint, you need to surround yourself in one - without that, the claminess/coolness feeling increases.
    Although not a true article of VBL clothing, I do remember wearing my Houdini windshirt through the night on a cold evening - that seemed to keep me quite warm, and also provided some vapor barrier quality to protect my UQ that night. It worked to some extent, but I see your point of essentially wrapping yourself in the VBL, as opposed to lying on top of it. Good point indeed.

    No more space blanket for me, though.

  8. #8
    DivaB's Avatar
    Join Date
    May 2011
    Location
    Newark, OH
    Hammock
    DIY Extra Wide & Long Tablecloth
    Tarp
    Funky & GG Tarps
    Insulation
    DIY down UQ
    Suspension
    continuous L. Amst
    Posts
    4,143
    Several General talk topics on VB too, this is the most recent. We have several that are very familiar with VB and you can always PM them. I find the concept intriguing, but have not personally used it for hammock camping purposes.

    BillyBob; OneThing; MacEntyre; and BlackWolf are very informative on the use of VB just to name a few.

    http://www.hammockforums.net/forum/s...ad.php?t=63834

  9. #9
    Member Jolly's Avatar
    Join Date
    Nov 2012
    Location
    New York
    Hammock
    Wilderness Logics Snipe
    Tarp
    HG Cuben w doors
    Insulation
    HG UQ, ZPacks TQ
    Suspension
    Anchors/Amsteel
    Posts
    69
    Thanks a lot, DivaB - much obliged!

  10. #10
    Herder of Cats OutandBack's Avatar
    Join Date
    Dec 2010
    Location
    Denver, CO
    Posts
    6,055
    Images
    129
    I experimented a bit with VB and found for me it's better and easier to control my moisture than trap it.
    If I was going on an extended winter trip of 7 or more days below freezing I might consider it again to keep the down dry but then again maybe not. It's very easy to get it wrong.
    O&B
    May your mileage in the backcountry exceed your post count.

Similar Threads

  1. Replies: 51
    Last Post: 04-25-2015, 09:21
  2. My Thoughts on Vapor Barriers
    By Youngblood in forum General Hammock Talk
    Replies: 100
    Last Post: 02-05-2015, 19:35
  3. Reflective Barriers
    By TeeDee in forum Bottom Insulation
    Replies: 42
    Last Post: 12-10-2010, 13:07
  4. Can somebody explain vapour barriers
    By Shewie in forum General Hammock Talk
    Replies: 5
    Last Post: 12-23-2009, 08:38

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •