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OT - Cement Block Foundation - Calcification Prob?

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Rusty Scupper

03-11-2006 14:51:46




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I am looking at a house that has 3 sides built into a hill. The mainlevel is about 5 courses below ground on the 3 sides with about another 4 courses above ground. The blocks above ground looks like there is some calcification on them.
What is causing it? Is it heat loss from inside the house? What problems are happening behind the wall (moisture, etc)? Should I be concerned? I do have pics. Thanks

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Bus Driver

03-13-2006 04:24:49




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 Re: OT - Cement Block Foundation - Calcification P in reply to Rusty Scupper, 03-11-2006 14:51:46  
The condition you are seeing is called efflorescence. Do a Google search for more information.



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MarkB_MI

03-12-2006 04:51:20




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 Re: OT - Cement Block Foundation - Calcification P in reply to Rusty Scupper, 03-11-2006 14:51:46  
Water is coming in from the outside, bringing minerals with it. My guess is that the water is being wicked uphill by the blocks, where it drys and leaves the deposits.

I doubt that your foundation is in danger, but the moisture will cause you aggravation. How difficult this is to fix depends a lot on whether you can prevent water from getting next to the house. Adding gutters can help if the water is directed away from the house. Trenchs with drain tiles is the next step.

One relatively cheap fix is to use waterproofing paint on the interior of the wall. This will stop the chalky deposits on the wall, but won't necessarily stop water from coming into the basement from under the wall.

I suggest you have a couple of contractors that specialize in basement waterproofing look at the situation and give you bids on fixing it. You can use this information to negotiate a better price.

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Rusty Scupper

03-11-2006 17:11:02




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 Re: OT - Cement Block Foundation - Calcification P in reply to Rusty Scupper, 03-11-2006 14:51:46  
Scott, thanks for the info. I am aware of that proceedure, ugh. Can you email me your email address so I can send the pics to you to verify that this is the problem. [email protected]

The house was built in 1981 and they have never put carpeting down on the main level??? The property disclosure didn't mention water problems. Just doesn't seem to make sense, but maybe it is..... Rusty

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Rusty Scupper

03-11-2006 16:43:56




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 Re: OT - Cement Block Foundation - Calcification P in reply to Rusty Scupper, 03-11-2006 14:51:46  
I sent pictures to a home inspector and he said that they are inconslusive. The home has other issues which I can deal with but don't want to gut it and start over and/or dig around the foundation and backfill with drain tile.



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scott#2

03-11-2006 16:54:34




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 Re: OT - Cement Block Foundation - Calcification P in reply to Rusty Scupper, 03-11-2006 16:43:56  
The way you usually deal with this is to dig the floor up inside around the edges and punch holes in the block so the water can drain out and down into drain tile thats installed on gravel that leads to a sump. Then cover the floor back up. Eggcrate plastic goes up against the wall before the new concrete goes down. This keeps the water from making its way out into the room. Works quite well and solves the r. I did it in that house I was referring to and havent had any further problems.

Jack the floor up, remove dirt, lay down gravel, install drain tile (perferated plastic pipe), grade it to the sump, lay egg crate up against wall, back fill with concrete. Maybe you can use this as a barganing tool.

scott#2

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scott#2

03-11-2006 15:37:23




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 Re: OT - Cement Block Foundation - Calcification P in reply to Rusty Scupper, 03-11-2006 14:51:46  
Thats moisture seepage and the block breaking down. If you can dry it out, remove the water source and keep it dry, inside and out, you can stop it if it hasnt gone too far. Left unchecked, eventually the block will turn to mush. I have a very old house that this has happened to from years of water collecting inside of the block. I bet if you punch holes in the blocks down low, after a good rian, water will spill out.

scott#2

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Dave_Id

03-11-2006 15:00:31




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 Re: OT - Cement Block Foundation - Calcification P in reply to Rusty Scupper, 03-11-2006 14:51:46  
If you are buying a home, you should spring home inspection. The inspector is working for you and will tell you everything you need to know.



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MarkB_MI

03-12-2006 05:01:16




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 Re: OT - Cement Block Foundation - Calcification P in reply to Dave_Id, 03-11-2006 15:00:31  
Dave,

I suppose there are some good home inspectors out there, but my personal experience is that it was a wasted 300 bucks. Just by walking around the house, I saw a number of problems (including a bad roof) that my inspector didn't bother to mention. In the future, I'll do the inspection myself, save 300 bucks and call in an expert if I see a problem I don't know much about.

Home inspectors and home warranties seem to be pushed by real estate agents who want to avoid liability if problems show up after the sale.

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Rusty Scupper

03-12-2006 06:47:13




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 Re: OT - Cement Block Foundation - Calcification P in reply to MarkB_MI, 03-12-2006 05:01:16  
MarkB - Real Estate agents are not required to take the schooling that home inspectors have to take. Real Estate agents know and practice real estate law not building codes, etc.

With all of the sue happy people out there the agents should offer those services and it is up to the buyer to decline if they wish.

I would agree that not all home inspectors are worth the money (probably the same in any business). I didn't hire him but asked his opinion on this issue before I wrote on the property.

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