after water

Reply

  #1  
Old 04-27-08, 01:26 PM
Member
Thread Starter
Join Date: Mar 2008
Posts: 3
Received 0 Votes on 0 Posts
after water

I have been in my home 1 year. I was told the darker shiny spots in concrete basement floor was waterproofing. About a month ago I had about 1/4 inch water in one area of the basement. I vacumed the water up and washed the floor and dried it with a fan. Now the darker areas have a gray film on them and when I scrape it - it is a white flaky substance. Can anybody tell me what the problem is and what to do about it? Thanks for your time.
 
Sponsored Links
  #2  
Old 04-27-08, 03:25 PM
Member
Join Date: Oct 2006
Location: Wilmington
Posts: 4,219
Received 0 Votes on 0 Posts
What you describe sounds like efflourescence, lime leaching from the concrete due to moisture. New House, or old?? Newer construction usually requires a heat/moisture barrier under a slab. This is usually more obvious on walls than on the floor. If a new house, the problem is likely due to poor drainage due to settlement of grading around the house, or gutter/downspouts not getting the water away from the foundations. Regrading(adding soil around the foundation) and adding to the downspouts often corrects this problem.

It is possible that none of the above is the problem, that the slab is sitting on a high groundwater table. If that is the case, there is no inexpensive cure.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: