Page 1 of 2 12 LastLast
Results 1 to 13 of 16
  1. #1
    Hello,

    To help dehumidfy my crawl space and eliminate moisture, and a damp smell from my crawl space, I'm considering putting in a vapor barrier.

    Who does this?
    Is this a general contractor or usually an HVAC pro?

    And generally speaking is this an expensive thing to do? (2000Sq ft home)

    I figure I would do it at the same time I'm having my ductwork replaced later this year.

    Thanks!

  2. #2
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Lay it down and roll it out.


    A handyman can do it, and you may get your hvac contractor to do it.
    Karst means cave. So, I search for caves.

  3. #3
    Originally posted by visoredge
    Hello,

    To help dehumidfy my crawl space and eliminate moisture, and a damp smell from my crawl space, I'm considering putting in a vapor barrier.

    Who does this?
    Is this a general contractor or usually an HVAC pro?

    And generally speaking is this an expensive thing to do? (2000Sq ft home)

    I figure I would do it at the same time I'm having my ductwork replaced later this year.

    Thanks!
    May we assume your crawl space has a dirt floor? If so, then, as the previous poster has suggested, you can hire just about anyone to spread out fairly heavy duty plastic sheeting. This is a very inexpensive fix to your moisture problem.

  4. #4
    Join Date
    Oct 2005
    Location
    Omaha, NE
    Posts
    309

    If you have cobblestones

    Like many crawlspaces, the move th cobblestones on the sides.
    Lay the plastic sheeting (Homedepot or the like) down. Make sure they overlap each other by 1 foot.

    Then move the cobblestones back on them.

    INEXPENSIVE and IT WORKS well.

    cn

  5. #5
    Join Date
    Dec 2002
    Location
    in a house, Appomattox, Va.
    Posts
    3,308
    You want the heavier plastic and tape the seams. tale up wall some and tape there also.

    There are also companies which do a high end vapor barrier and address water in crawl, if any. They also provide warranty.
    Col 3:23


    questions asked, answers received, ignorance abated

  6. #6
    Join Date
    Dec 2002
    Location
    in a house, Appomattox, Va.
    Posts
    3,308
    And also close the crawl space vents. seal crawl and add dehumidifier to control rh levels.
    Col 3:23


    questions asked, answers received, ignorance abated

  7. #7
    Join Date
    Oct 2002
    Posts
    48
    Some good info here:

    http://www.basementsystems.com

    [Edited by Lusker on 01-27-2006 at 09:46 PM]

  8. #8
    Join Date
    Mar 2001
    Posts
    288
    buy 6 mil polyethylene and roll it your self...

    your termite company may also do the service....

    many handymen in the phone book

    probably between $XXXXXXX if you hire it done

    consider http://www.thermastor.com

    [Edited by Mod2 on 01-29-2006 at 01:52 AM]

  9. #9
    i read that the regular old 6mil plastic you find @ hardware stores is notoriously inconsistent in terms of durability and toughness, and to use a heavy duty vapor barrier instead.. any recs on a brand of vapor barrier?

    My crawlspace is dirt, but to roll it out is impossible!
    I've got pipes cables, ductwork, and 4x4 wood supports everywhere... easier said than done!

    I've also read that you need special tape, mastic tape to tape it to the foundation, and between seams.

  10. #10
    Join Date
    Nov 2001
    Posts
    1,874
    sounds like you know what to do then,

    Roll up the sleaves and "GET-r-Done"
    If you try to fail, and succeed.
    Which have you done ?



  11. #11
    Just to prove that hacking is not confine to HVAC (present company excluded) be wary of the Termite Company.

    We were billed $XXX to lay it out in the crawl of our Norfolk VA house. Came home to find the two access doors had been opened, the roll placed down, the roll pushed (must have been tired because it didn't unroll far), and the door closed. My wife said he was down there two hours...must have been sleeping.

    Took me about three hours to unroll both rolls and lay it out, even with obstructions it's pretty easy. Didn't sweat taping seams or to the foundation. Not only did the job make "house diving" a more pleasant and cleaner experience, but it reduced the in house humidity incredibly. After a bit all the sticky doors and furniture loosened right up, no more musty smell when it rained, and much better air quality (subjectively).

    It's worth doing it yourself if only to scope out all the corners of your crawl.

    [Edited by Mod2 on 01-29-2006 at 01:53 AM]

  12. #12
    Join Date
    Feb 2003
    Location
    Huntsville,AL
    Posts
    4,125
    consider using a white pool linner

    do NOT run plastic clear up foundation -- leave 4- 8 inches exposed to be able to check for termites!

    best to seal the seams

    have you checked for water flow into your crawl?

    have you insulated the walls with Styrofoam?

    have you foamed the sill plate to the foundation? or was mastic applied under sill plate?

    have you insulated the rim board (between the floor joists)?

    have you extended your downspouts 10ft?
    does dirt slope 5% away from house for 10ft?

    do you have a ditch to divert rain on the upper side of the house?
    harvest rainwater,make SHADE,R75/50/30= roof/wall/floor, use HVAC mastic,caulk all wall seams!

  13. #13
    Join Date
    Jun 2005
    Posts
    19

    I saw this website a while ago ...


Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event