Quick question: isn't tarpaper waterproof????

Discussion in 'Coop & Run - Design, Construction, & Maintenance' started by cjeanean, Oct 23, 2008.

  1. cjeanean

    cjeanean Can't Decide

    Mar 5, 2008
    I didn't have the money to get shingles yet, so instead I put the rolls of roofing felt on top of the coop. Today I went out there (it's been raining the past week) and instead of a nice dry coop everything's wet. Meaning I have to clean the whole darn thing out. Isn't roofing felt waterproof??? I'm not understanding how everything got wet! I can't do shingles till next week, and I'm not very happy right now!!! (So much for my foolproof design....)
  2. digitS'

    digitS' Chillin' With My Peeps

    Dec 12, 2007
    ID/WA border
    When I first came to be aware of the world - I found that I was living on my grandmother's farm in a tarpaper shack [​IMG]. The family saved money until Dad could afford his own little farm.

    I'm pretty sure that the tarpaper wasn't the only thing on the roof, tho', just that there was no siding on the exterior.

    Howsomever . . . when I started off on my own on a little piece of acreage, I first built a little barn and only got the tarpaper (30 lb) on the roof for the first Winter. Lots of cold and snow that Winter but the roofing, held down by lathe, shed water fine.

    Soooo, I built a cabin the next year and used the same technique. It had a very steep roof and I thought everything should be fine even with another cold, snowy Winter - leaked like a sieve [​IMG]!! Oooops!

    Thirty pound roofing felt with vertical cedar lathe may or may not shed water for a few months - that's my experience. A tarp might be a quick solution :|.

  3. antlers

    antlers Chillin' With My Peeps

    Jun 20, 2008
    East Cent Minnesota
    Well did you unroll it? [​IMG] Sorry just teasing.
    Yes basically it is water proof but it needs to be layered right and it WILL seep around staples holes etc. Also if it is windy it can move water up under the felt as the edges do not seal like shingles do. Lastly, there are different weights of felt. The cheaper grades are not a good as the heavy expensive grades. Perhaps you got a poor batch at has little tar in it....
  4. ChickenToes

    ChickenToes Chillin' With My Peeps

    May 14, 2008
    NE Wisconsin
    I do believe it's waterproof. But if it's not held down correctly then I could definitely see it leaking like a sieve.
  5. TxChiknRanchers

    TxChiknRanchers Chillin' With My Peeps

    Aug 18, 2007
    Southeast Texas
    its water resistant, needs something to cover it to protect it from the elements. Shingles or tin or siding.
  6. cjeanean

    cjeanean Can't Decide

    Mar 5, 2008
    I think it's 15 weight....I just needed a temporary fix until I could get shingles, which will be next weekend. I just don't get it, the duct tape and strips of felt stapled around the edges worked a thousand times better!
  7. GopherBoyFarms

    GopherBoyFarms Chillin' With My Peeps

    Mar 18, 2008
    Vancouver WA
    it really has to do with the way it's applied.

    Also if you are looking for a cheaper way to get roofing, what we did was went to Lowes, and home depot and got all the broken open packages...they will sell those to you for half price just to get rid of them.
  8. cjeanean

    cjeanean Can't Decide

    Mar 5, 2008
    so how the heck does it have to be applied?!?! We put it in lengthwise strips starting at the bottom of the roof and working our way up, like you would with shingles. Should I have done it vertically instead???
  9. danamillette

    danamillette Chillin' With My Peeps

    Jul 16, 2008
    Northern Wisconsin
    It is resistant, but when used with shingles and other roofy things...I just asked my hubby who much to his dislike has been roofing all summer/fall.
  10. ChickenTender63

    ChickenTender63 Chillin' With My Peeps

    Sep 28, 2008
    Alamance, NC
    you didn't do anything wrong, other than not finishing the job. You have applied the felt in the right manner, but, for it to become water proof you HAVE to apply the shingles.

    Felt is very suseptible to leakage because of exposed fasteners. It will rip very easy in high winds, especially 15# felt. You have to use enough lath to hold it down good, which also puts more holes through the felt, which in turn causes more leaks.

    It will only deter small amounts of rain from getting through, but if you are having good rain showers, it is going to get wet.

    Once the shingles are applied, then it will be sealed. When the shingles are installed, none of your nails are open to the weather, they are covered by the next row of shingles, ensuring it is sealed.

    Cover it with a tarp, until you can get the shingles installed. That will be your best option.

    Sorry to be the bearer of bad news, but good luck on it!

    (by the way, I was a custom home builder for years and have been through roofing before)

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