Hire the best Flooring Expert

Damp clay under piered house

Results 1 to 3 of 3
  1. #1
    Member
    Join Date
    Mar 2016
    Location
    Canberra
    Posts
    66

    Default Damp clay under piered house

    Hello, I live in Canberra and I had my roof painted a month or so ago. I disconnected the water tank and so the water, (in this mad, never-ending rainy weather) went under the house instead on the next day and maybe a few others. Anyhow, it has been a few weeks, not overly warm here yet but today is 22 which is a step in the right direction. Anyhow, I have placed a large floor fan under there and ran it flat out all day for several days to little or no effect. House is built on brick piers and in some places is probably 1500mm from clay to floor and others 600mm so plenty of space under there. It has also started getting that white fluffy mold on top in some small parts, should I remove that? Could be anywhere! Any suggestions? House vents are open/good, old 1960's style ones with 120x70 wide grilles.

    Cheers,

    Geoff

  2. #2
    1K Club Member havabeer's Avatar
    Join Date
    Nov 2011
    Location
    nsw
    Posts
    1,109

    Default

    you'll need the forced ventilation on for weeks to consider drying it out. a simple floor fan isn't going to do much.

    you're also far better off "sucking" air out from under the house then trying to blow air in, sucking the air will draw the warmer in and over the whole area, trying to get tons of air FLOW to promote alot of air exchanges, rather then BLOWING the air in and just pressurising the whole area. You'll find almost all sub floor vent systems will have open vents on one side and fans on the other sucking the air from under the house and blowing it outside for this reason
    Remember if you don't sin, then Jesus died for nothing

  3. #3
    Member
    Join Date
    Mar 2016
    Location
    Canberra
    Posts
    66

    Default

    Quote Originally Posted by havabeer View Post
    you'll need the forced ventilation on for weeks to consider drying it out. a simple floor fan isn't going to do much.

    you're also far better off "sucking" air out from under the house then trying to blow air in, sucking the air will draw the warmer in and over the whole area, trying to get tons of air FLOW to promote alot of air exchanges, rather then BLOWING the air in and just pressurising the whole area. You'll find almost all sub floor vent systems will have open vents on one side and fans on the other sucking the air from under the house and blowing it outside for this reason
    Thanks havabeer. Issue still ongoing, more rain and cold weather here in Canberra. Would a dehumidifier work/help from Kennards? Does a dehumidifier suck air from soil? I know it removes moisture from the air? I am between jobs at the so don't have a lot of spare cash for this at the moment.

Similar Threads

  1. Replies: 1
    Last Post: 27th May 2013, 04:47 PM
  2. Concrete or stones around house with clay soil.
    By JB1 in forum General Odds & Sods
    Replies: 6
    Last Post: 28th Jan 2013, 09:20 PM
  3. Damp under house
    By Tiger in forum Sub Flooring
    Replies: 5
    Last Post: 8th Jan 2012, 10:42 AM
  4. Damp clay soil under house should I take action?
    By DIYwannabe in forum Sub Flooring
    Replies: 6
    Last Post: 1st Mar 2011, 09:11 PM
  5. Replies: 0
    Last Post: 16th Dec 2007, 11:01 PM

Posting Permissions

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