Should I Seal The Perimeter Gap Of My Floating Slab? - Concrete, Stone & Masonry - Page 2 - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 03-28-2012, 04:51 PM   #16
Member
 
Join Date: Oct 2008
Location: Albany, NY
Posts: 72
Rewards Points: 75
Default

Should I seal the perimeter gap of my floating slab?


Using custom-ordered 2" backer rod and a couple of hundred dollars worth of crack sealer, I was able to seal the entire gap on the perimeter. As expected, the mold smell went away for the most part.

One unexpected result was that I was actually getting some water off the walls, and which had been going into the gap. With the gap filled, a small amount of water does run onto the basement floor. Fortunately, the dehumidifiers were able to keep up with the tiny bit of water coming in.

Since the mold smell didn't go away completely, and we want to finish the basement, we will actually be taking out the concrete floor, digging down a foot, then putting a new slab in. The expectation is that a new slab with a vapor barrier and a properly draining aggregate will get rid of any remaining moisture problems (and hopefully mold smell).

Time will tell.

Advertisement

toddmanqa is offline   Reply With Quote
Old 08-13-2013, 08:16 PM   #17
Newbie
 
Join Date: Aug 2013
Posts: 2
Rewards Points: 10
Default

Should I seal the perimeter gap of my floating slab?


I know this is an old thread but I too have a floating slab. my basement flooded twice this year and now I'm ripping up the walls only to find 1x6s stuffed into the gaps. the wood above the gap is OK but the wood under the gap is completely dry rotted out. in some places the wood above the gap is so tightly compressed in the gap the only way to remove the dry rot underneath is to chisel up the foundation. not a great plan. it's a total nightmare because I can't find a way to remove the wood and my entire basement smells like a dry rotted piece of wood in a forest. It's labor intensive and time consuming to get it out of the gap. I've tried as much as I can. maybe a professional can help but that's thousands of dollars in labor to pick at the stuff by hand.

Advertisement

serfin control is offline   Reply With Quote
Reply

Tags
floating slab , french drain , mold , seal , spray foam


Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Floating Floor vs. Glue down on basement slab KG032973 Flooring 9 02-23-2009 05:14 PM
preping concrete slab for floating floor Shabadoo Flooring 7 07-30-2008 09:19 PM
Deffinition of a floating slab Cory Groft Building & Construction 4 06-04-2008 03:11 PM
Basement Framing - Floating Slab JackOfAllTrades Building & Construction 8 02-05-2008 04:20 PM
Floating Slab JackOfAllTrades Building & Construction 1 01-26-2008 12:07 AM




Top of Page | View New Posts