Foundation Patch - Masonry - Contractor Talk

Foundation Patch

 
Thread Tools Search this Thread Display Modes
Old 07-30-2008, 06:57 PM   #1
Pro
 
Captainsls's Avatar
 
Trade: HARDSCAPE
Join Date: Nov 2007
Location: MA
Posts: 295
Rewards Points: 350

Foundation Patch


We will be installing a retaining wall for a customer in a few weeks. Next to the proposed wall area I have discovered a leak where the concrete form for the garage meets the house. The garage was an addition that looks rather poorly built. The garage sits sub-grade at basement level.
After looking at the inside wall of the garage where they meet, it looks like the problem is occurring where the form meets the original foundation. Could someone tell me what the proper way would have been to join the two structures when they were built?
It looks like they didnít even attempt to join them in any fashion; they just set up forms and poured.

My solution (after I excavate on the outside of the foundation) is to chip, or grind away much of the ruff concrete at the seam, tuck the seam with a modified type S, and paint over the afflicted area with a foundation water-proofer. I also intend to backfill using an open graded aggregate to promote percolation in this area.

Sound like a reasonable solution?
Captainsls is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 07-30-2008, 07:12 PM   #2
Pro
 
CJKarl's Avatar
 
Trade: Masonry
Join Date: Nov 2006
Location: Ivoryton CT
Posts: 4,289
Rewards Points: 3,926

Re: Foundation Patch


Quote:
Originally Posted by Captainsls View Post
We will be installing a retaining wall for a customer in a few weeks. Next to the proposed wall area I have discovered a leak where the concrete form for the garage meets the house. The garage was an addition that looks rather poorly built. The garage sits sub-grade at basement level.
After looking at the inside wall of the garage where they meet, it looks like the problem is occurring where the form meets the original foundation. Could someone tell me what the proper way would have been to join the two structures when they were built?
It looks like they didnít even attempt to join them in any fashion; they just set up forms and poured.

My solution (after I excavate on the outside of the foundation) is to chip, or grind away much of the ruff concrete at the seam, tuck the seam with a modified type S, and paint over the afflicted area with a foundation water-proofer. I also intend to backfill using an open graded aggregate to promote percolation in this area.

Sound like a reasonable solution?

Yes, maybe even waterplug cement. (hydrolic cement)

Advertisement

__________________
There's Always A Market For Quality
http://www.kaufmannmasonry.com/
CJKarl is offline  
Old 07-30-2008, 07:17 PM   #3
DGR,IABD
 
mdshunk's Avatar
 
Trade: Electrical; Commercial and Residential Service
Join Date: Mar 2005
Location: Central PA
Posts: 9,683
Rewards Points: 2,002

Re: Foundation Patch


They seal those Superior Wall panels together with a Tremco sealant product. I'm not sure which one.
mdshunk is offline  
Sponsored Links
Advertisement
 
Old 07-30-2008, 08:26 PM   #4
Pro
 
Tscarborough's Avatar
 
Trade: Monkey Scratching Cat Herder
Join Date: Feb 2006
Location: Austin
Posts: 6,344
Rewards Points: 1,456

Re: Foundation Patch


Either a keyway and/or a waterstop should be used for PIP cold joints.

This link has the information on waterstops (new and retrofit):

http://www.greenstreak.com/submittal_select_items.asp

Show us a picture for possible remedies in your situation.
Tscarborough is offline  
Old 07-30-2008, 08:55 PM   #5
Pro
 
Captainsls's Avatar
 
Trade: HARDSCAPE
Join Date: Nov 2007
Location: MA
Posts: 295
Rewards Points: 350

Re: Foundation Patch


Thanks for the great feedback.

Tscar, the rubber diaphragms would have been the logical choice, but I donít think anything like that was used.
By keyway, do you mean notch the old foundation and pour? Or would some type of expanding key be driven into the keyway at the joint?

Also, Greenstreak makes a product called "Leakmaster". Sounds like hydraulic cement that has the ability to expand? Any good?

(I will be sure to get some picts, thanks)
Captainsls is offline  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
Knockdown Texture Patch - Flashing? mseneker Drywall 7 05-18-2009 11:47 AM
foundation to small prometheus2003 Concrete & Paving 4 05-26-2008 09:16 AM
Foundation repair (New business) Help! crosshair66 Business 10 05-18-2008 08:19 AM
Undermine foundation? Drbobp Excavation & Site Work 23 03-07-2008 09:30 PM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?