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re: Sunken Den in my house with water table seepage.
Posted on 5/17/21 at 8:45 pm to Yeahright
Posted on 5/17/21 at 8:45 pm to Yeahright
If there are no large cracks where water gets in than you can coat the inside of the concrete with a crystalline waterproofing. This is what is used in below grade elevator pits to keep out water. It can resist hydrostatic pressure.
Product Link
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1
Posted on 5/17/21 at 8:47 pm to Yeahright
My parents had this problem in a "basement" under the house, which was really just a level under the main level because the house is built on a hill. Had to do with the water table. With a bunch of rain, water would seep through a crack in the concrete. We ended up jackhammering a hole in the concrete in a closet closest to the crack. Dug and put a tank with a sump pump in the hole and put gravel around the tank up to the concrete level. Have not had water come through the floor since. Hope this helps.
Posted on 5/17/21 at 8:48 pm to MikeD
quote:
Put some gutters on the house.
Add some drainage to remove water from close to house.
Probably a very good first move. You can add a drainage system to your yard and have the gutters drop directly to some catch basins. Probably fairly pricey though
Posted on 5/17/21 at 8:51 pm to Yeahright
I think your screwed your just putting a bandaid on a issue that should have been addressed before you poured the slab. I would think you need to do what the other poster said first address the drainage around your home need some french drains around the entire home and then break a hole open in the lowest portion and install sump pump. I think that's really all you can do. Obviously even with that done you will need a solid semi permanent dehumidifier running 247 to keep the mold off the walls from the concrete sweating.
Posted on 5/17/21 at 8:53 pm to learnthehardway
We fixed the exact same issue at my parents home. Theirs was sunk in 12” and was roughly 25’ x 30’. We had a concrete guy come in and wheel barrow in 8” of sand then poured 4” of concrete. The result made the living room level with the rest of the house.
Posted on 5/17/21 at 8:54 pm to Yeahright
Fill it in or sell it before next year’s spring rains.
Posted on 5/17/21 at 8:59 pm to Yeahright
Really hard to give advice when you provided very little details about where is the den located on the floor plan? Center of house, near an exterior wall? Sketch it out and post it.
Probably need to some sort of a drainage system around exterior of house closest to the sunken den, pull water out with a sump pump.
Probably need to some sort of a drainage system around exterior of house closest to the sunken den, pull water out with a sump pump.
Posted on 5/17/21 at 9:05 pm to Big O Tiger
quote:
Sunken Den in my house
You sure you have a sunken den? Or could it just be that one of the tires on the trailer is flat?
Posted on 5/17/21 at 9:07 pm to Yeahright
My parents had the same exact issue. Sunken living room that would get water coming in the backyard side of the house. Did not come in the other side. Would happen even when it hasn’t rained for days.
Come to find out the had underground springs that would randomly send the water into the room. We put in a French drain in the backyard diverting it down the slope of the driveway. Went 36” deep at the deepest spot and angled it down the direction we wanted it to go.
Been 11+ years since we did it and not a drop of water in since that time.
Come to find out the had underground springs that would randomly send the water into the room. We put in a French drain in the backyard diverting it down the slope of the driveway. Went 36” deep at the deepest spot and angled it down the direction we wanted it to go.
Been 11+ years since we did it and not a drop of water in since that time.
Posted on 5/17/21 at 9:11 pm to MikeD
quote:
Put some gutters on the house.
Add some drainage to remove water from close to house.
???
Gutters plus some french drains. If you don't have enough elevation drop you're sorta screwed.
Posted on 5/17/21 at 9:23 pm to Yeahright
Good lord. Do yall take anything seriously?
OP, How large is the den? And where is it located with regard to exterior wall?
Best solution is the following.
Cut a 2' wide trough from the middle of the room to the nearest exterior wall. The depth of the trough should start at 1' beneath finished floor and slope to about 4' below finished floor as you reach the exterior wall(deeper as you get closer to the exterior wall). Continue that trough until you are outside the footprint of your slab. Once outside the house, dig a hole large enough to fit a 55 gallon drum. Place corrugated perforated black drain pipe in the trough from the center of your den to the hole outside the house. Fill the trough, making sure the black pipe is in the bottom of the trough, with 57 stone (like river rock). Place a 55 gallon drum in the hole outside. Make sure the black pipe drains into the 55 gallon drum, and the bottom of the drum is no less than 4' below finished floor. Place 1' of 57 stone in the bottom of the drum. Place a sump pump, with a float, on top of the 57 stone. Pipe the drain from the sump pump well away from the house.
You're installing a French drain beneath your den. By digging below the water table you are creating a low point for water to accumulate and drain to the 55 gallon drum where the sump pump then pumps the water away from the house.
If the water table is higher than your finished floor, water will find a way in. You have to create a path of least resistance for the water to follow.
This is a semi permanent solution. It will work for several years, as long as you maintain it.
Oh, I almost forgot, you can pour concrete back over the trough inside the house, and lay tile back over it.
Hope I didn't miss anything.
OP, How large is the den? And where is it located with regard to exterior wall?
Best solution is the following.
Cut a 2' wide trough from the middle of the room to the nearest exterior wall. The depth of the trough should start at 1' beneath finished floor and slope to about 4' below finished floor as you reach the exterior wall(deeper as you get closer to the exterior wall). Continue that trough until you are outside the footprint of your slab. Once outside the house, dig a hole large enough to fit a 55 gallon drum. Place corrugated perforated black drain pipe in the trough from the center of your den to the hole outside the house. Fill the trough, making sure the black pipe is in the bottom of the trough, with 57 stone (like river rock). Place a 55 gallon drum in the hole outside. Make sure the black pipe drains into the 55 gallon drum, and the bottom of the drum is no less than 4' below finished floor. Place 1' of 57 stone in the bottom of the drum. Place a sump pump, with a float, on top of the 57 stone. Pipe the drain from the sump pump well away from the house.
You're installing a French drain beneath your den. By digging below the water table you are creating a low point for water to accumulate and drain to the 55 gallon drum where the sump pump then pumps the water away from the house.
If the water table is higher than your finished floor, water will find a way in. You have to create a path of least resistance for the water to follow.
This is a semi permanent solution. It will work for several years, as long as you maintain it.
Oh, I almost forgot, you can pour concrete back over the trough inside the house, and lay tile back over it.
Hope I didn't miss anything.
Posted on 5/17/21 at 9:24 pm to Yeahright
Install a perimeter French drain system.
Posted on 5/17/21 at 9:34 pm to Yeahright
One of your neighbors has done something to affect drainage to your detriment. You may want to get someone to excavate beneath the slab under the den to see what’s going on. Does your soil contain a lot of clay?
Posted on 5/17/21 at 9:39 pm to Beauxcefus
Sump pumps are a fairly basic principle, you dig a hole that fills with water and the pump pumps it out. This prevents water or water table from getting as high or into your home. Many people have them in their basements. I’ve seen an external sump pump too, same basic idea but the water table would rise occasionally and flood into the house, sump pump was installed outside of home and anytime the basin floated the sump pump would kick on.
Sump pumps themselves are cheap and basic, how you would apply this to your home OP would be difficult to impossible without a professional being on site.
Sump pumps themselves are cheap and basic, how you would apply this to your home OP would be difficult to impossible without a professional being on site.
Posted on 5/17/21 at 9:45 pm to Yeahright
Yikes. You likely don't have a sufficient capillary barrier and absent or incorrectly installed vapor barrier.
Need to get an engineer to inspect and make a recommendation.
Need to get an engineer to inspect and make a recommendation.
Posted on 5/17/21 at 10:05 pm to Yeahright
You can put drainage grates around the outside, but they need to connect to big pipes - like 8” - and have fall out to a drain by the street.
Posted on 5/17/21 at 10:30 pm to Beauxcefus
quote:
Good lord. Do yall take anything seriously?
Posted on 5/17/21 at 10:41 pm to Yeahright
Your house must smell like shite constantly.
Posted on 5/17/21 at 10:59 pm to Beauxcefus
quote:
Good lord. Do yall take anything seriously?
If only they had a specific board for home repair help.....
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