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Old 04-01-2019, 05:19 AM   #16
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Re: Water stains on interior basement walls


It's the 5 gallon buckets of tar they sell at the big box and other places. I think the correct name is foundation grade tar. I don't how the chemical make up is different but it's thinner than roofing tar. We used to use it on below grade foundations all the time 40 yrs ago.
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Old 04-01-2019, 05:49 AM   #17
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Re: Water stains on interior basement walls


always thought it was liquid asphalt cement, kitty litter, & wtr mixture (emulsion),,, https://en.wikipedia.org/wiki/Emulsion,,, i need to look again - THANKS !
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Old 04-20-2019, 09:46 PM   #18
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Re: Water stains on interior basement walls


Quote:
Originally Posted by huesmann View Post
Do you have any pics of the exterior grading of the walls where you're getting the efflorescence?

Sorry for not getting back to you sooner. My plate has been a little full lately.

Please check out photos on my original #1 post --those photos will show the two walls that have the issues. Those two walls are not completely covered on the outside as you can see.
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Old 04-20-2019, 10:03 PM   #19
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Re: Water stains on interior basement walls


From what I am hearing from all of you (plus other local people that I have talked too) I guess I need to excavate those two walls. Then put in a new updated type of French Drain. Then clean those two walls that are below grade and apply whatever is needed to the walls.

One problem that worries me is the weather that we have in this area can be very wet at times. I assume that when excavating I will need to make sure that any rain water will flow out away from the house while the work proceeds.

Do I need to dig down below the foundation to install the French Drain?

What is the best setup for the French Drain? I guess I will need to make a list of questions for this project.
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Old 04-21-2019, 01:58 AM   #20
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Re: Water stains on interior basement walls


That is a lot of digging, you might consider the inside instead.

Either way you would tie into the drain at the garage if it is deep enough, it looks like it is.
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Old 04-21-2019, 03:00 AM   #21
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Re: Water stains on interior basement walls


no, NEVER dig BELOW the foundation's btm or you'll hasten a condition known as 'scour' & eventually need an underpinning,,, depending on the size of the work, put in a sump & pump in case of rain,,, don't think you'll have excessive wear on the volute & ruin the pump,,, they're fairly cheap anyway - eco-flo on eBay - $ 115-120 for 1/3rd hp
better yet, buy the pump & do the work in dry weather
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Old 04-26-2019, 09:50 PM   #22
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Re: Water stains on interior basement walls


Quote:
Originally Posted by Nealtw View Post
That is a lot of digging, you might consider the inside instead.

Either way you would tie into the drain at the garage if it is deep enough, it looks like it is.
Thanks for your reply--the video was very informative. I will also check some of his other videos.

About five years ago I noticed that the paint on the cement block under the deck was peeling off. I scraped the loose paint and washed the wall with Drylok Etch Masonry Cleaner--rinsed it well and let it dry for a week. Then I applied a coat of Drylok basement & Masonry Waterproofer. After three days I painted the wall with Lowes best exterior latex paint. I was looking at that wall the other day and I have the same problem--paint is peeling off right down to the original reddish brown color. See pictures.

Is that caused by water wicking up from the ground??
Attached Thumbnails
Water stains on interior basement walls-img_2691.jpg   Water stains on interior basement walls-img_2685.jpg   Water stains on interior basement walls-img_2684.jpg  
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Old 04-26-2019, 10:02 PM   #23
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Re: Water stains on interior basement walls


Quote:
Originally Posted by stadry View Post
no, NEVER dig BELOW the foundation's btm or you'll hasten a condition known as 'scour' & eventually need an underpinning,,, depending on the size of the work, put in a sump & pump in case of rain,,, don't think you'll have excessive wear on the volute & ruin the pump,,, they're fairly cheap anyway - eco-flo on eBay - $ 115-120 for 1/3rd hp
better yet, buy the pump & do the work in dry weather
Good info--thanks. I didn't think that it would be a good idea to dig down past the footer.

Someone that I was talking to locally made the comment that if I was to dig down to the footer around the two walls that are below grade, that I might have a problem of those walls bowing out. I don't think that would happen--what is your take on that?

I don't know if the original builder poured concrete into the hollow blocks or not. I know that I had that done to my garage when it was built. Didn't do the side walls all the way to the front, but the back wall was filled and part of the side walls.

One thing that I couldn't understand about this house is that I could never find any bolts/studs on the wooden plate that sits on the block walls of this house. It was built in 1978, but I thought that ALL houses had to be attached to the basement walls some how!

I do have a submersible pump--thanks for mentioning that.
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Old 04-26-2019, 10:29 PM   #24
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Re: Water stains on interior basement walls


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Originally Posted by Bud9051 View Post
I'm less of an optimists. The efflorescence is telling up the moisture is coming through the wall, condensation on the inside does not carry minerals and that is what the white stuff is.

But your problem is a bigger one, that hill behind you. For a long time water has been soaking through the surface soil and draining down that slope called subsurface drainage. Your basement was probably dug into the drain path. How to map that out and divert that flow around the house so it doesn't run into the back of the house is a difficult question but one you need to consider.

Excavating and replacing all of the perimeter drain would probably handle the water for a few years, as it did when built, but while the foundation is exposed you might do something about the source of that water.

Bud
Note, if you are on well water the driller knows how deep the soil goes before it hits bedrock and I have found they are very friendly to talk to. Name may be on the cover of the well.

I don't have a well. Originally we were getting water from the person who sold us the house. He lives up the hill behind us at the top of the mountain. His well is connected to a 1200 gallon reservoir that supplies water to his house, our house and two other houses that are all part of the property that the family owns. Just last year all of the houses except for the one that has the well have been changed to city water.

When I have my garage built in 05/06 we found a spring that was going to be under part of the garage floor. It was running pretty good when we first saw it. The contractor dug out where it was and installed a drainage pipe to get it away from the garage. After that I never saw it again--don't know where it went! Scary!
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Old 04-26-2019, 10:34 PM   #25
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Re: Water stains on interior basement walls


https://www.hydroarmor.com/portfolio...wet-and-moldy/
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Old 04-27-2019, 04:50 AM   #26
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Re: Water stains on interior basement walls


Moisture getting behind the paint is the biggest reason for it to peel on the exterior. The white shown in the pics could be effervescence which is another sign of moisture.


Locally it's common practice [maybe code] to fill the block core with concrete if it's below grade.
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Old 04-27-2019, 07:31 AM   #27
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Re: Water stains on interior basement walls


Efflorescence!
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Old 04-29-2019, 07:38 AM   #28
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Re: Water stains on interior basement walls


I have to agree with Bud9051. The hill behind you will drain water forever down towards your house. No amount of Drylock, Plastic or tar will ever stop the water. The only way that your basement will be completely dry will be to deal with the water coming down the hill. You will have to dig and install a total foundation drain system to divert the water from the hill around your house.
I had a buddy years ago lived in a house that had a hill behind his house that came from a highway maybe 100 feet back. he had to dig a trench across the entire rear of the house with grating that went to the sides and down to the existing street. Before that his basement was soaking . problem solved. Of course every situation is different. Good luck with your problem.
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Old 05-13-2019, 10:56 PM   #29
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Re: Water stains on interior basement walls


Quote:
Originally Posted by COLDIRON View Post
I have to agree with Bud9051. The hill behind you will drain water forever down towards your house. No amount of Drylock, Plastic or tar will ever stop the water. The only way that your basement will be completely dry will be to deal with the water coming down the hill. You will have to dig and install a total foundation drain system to divert the water from the hill around your house.
I had a buddy years ago lived in a house that had a hill behind his house that came from a highway maybe 100 feet back. he had to dig a trench across the entire rear of the house with grating that went to the sides and down to the existing street. Before that his basement was soaking . problem solved. Of course every situation is different. Good luck with your problem.
How deep would I need to dig down to install the "total foundation drain system" and what is the exact procedure to install that? Is there someplace online that will give me some info on that?

I have a small trench that I dug out years ago to try and divert the water that would come down that hill--is that not sufficient? See attached photos.

Also--I was watching some videos about water drainage & french drains. One mentioned that a non weave garden matt be used to keep the silt from filling up the gravel and drain pipe. I don't know what that is or where to buy it.
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Water stains on interior basement walls-img_2681.jpg   Water stains on interior basement walls-img_2680.jpg  
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Old 05-14-2019, 05:40 AM   #30
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Re: Water stains on interior basement walls


Foundation drains are installed at the footer - bottom of the foundation wall. Not a big deal to install during construction but a lot bigger job later on. If you enlarge that trench into a swale it should be more effective. A small trench can easily be overwhelmed during a hard rain.
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