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Old 10-12-2007, 05:53 AM   #1
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Basement leveling


The floor in my basment is nowhere near level, to sum it up its like a mound, high in the midde gradually going downhill toward the edges, I am wanting to level this, but not sure what is the best way to go about it, seeing as its probably about a 3-4" drop from the highest point to the lowest I am wondering if I should get concrete poured to level it up because I am assuming self leveling compounds are not for floors that are as uneven as this, not to mention expensive. Also seeing as the house is small so there isnt a whole lot of area to cover I am wondering which would be cheaper, getting someone to come in and pour it or get some bags of concrete and do it myself?

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Old 10-12-2007, 07:31 AM   #2
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Basement leveling


Most places have a 2-3 yard Minimum delivery........... so it would really depend on the size.... Unless you need new sidewalks as well.

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Old 10-12-2007, 11:00 AM   #3
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Have you consider building a wood platform in this case? it kind of kill two birds with one stone: you got level floor, and you get wood flooring rather than concrete... and in theory save you some heat ......
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Old 10-12-2007, 11:14 AM   #4
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It probobly tapers off like that to prevent water from puddling. My floor tapers off like your's, just not as much.
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Old 10-12-2007, 03:12 PM   #5
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Basement leveling


My father had the same problem and we did what KUI****G suggested. We made sure the floor had no leaks and then put down a wood frame. then put down 3/4" ply and then a hardwood floor on top. We did this about 8 years ago and still is a great basement.........
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Old 10-12-2007, 06:50 PM   #6
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thanks for the input, I never considered putting down a wood floor, might we worth looking into, main reason I want level concrete is because of a big ol slate pool table we inherited, also the basement doesnt have a very high ceiling so we wanted to try to keep as much height as possible, its a small house, so the more I think about it Im thinking a few bags of cement might be the route to go, we are also planning on putting carpet over top, its a dry area & when I gutted the basement there were no signs of leakage & the house was built in the 50s
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Old 10-15-2007, 11:59 AM   #7
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It's gonna take alot more than a few bags....trust me.
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Old 10-15-2007, 12:22 PM   #8
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Quote:
Originally Posted by Kellxr7 View Post
main reason I want level concrete is because of a big ol slate pool table we inherited
Pool tables can be leveled and almost always are using shims and the floor doesn't have to be perfectly level. If it's a couple inches in just the small area the pool table will go then obiviously it would need to be fixed somewhat, but if it's not that bad, you shouldbe fine as far as the pool table goes.
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Old 10-15-2007, 01:16 PM   #9
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Why is the floor high in the center? - Bad workmanship or expansive soil or what?

Determine that before you spend too much time ans money on it.
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Old 10-26-2007, 10:57 PM   #10
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Why is the floor high in the center? - Bad workmanship or expansive soil or what?

Most likely cause of raising in the center of the slab is lowering around perimeter of basement slab. The settling at the perimeter of the slab causes the middle to lift. This is caused by settling of the subgrade from lack of compaction on the soil below. As the house was built in the 50's the amount of compactive effort applied was probably minimal at best. Expansive soils are not the norm but are occassionally the problem. There are some clays that are expansive along with some man-made material that were unknowingly used as fill in the past. If you are the only person in your neighborhood experiencing these problems it is most likely due to settling around the perimeter. If all of your neighbors are experiencing a similar situation then you may want to call an engineer.

If you remove the slab it is a good idea to make sure that the sub-base is adequately compacted prior to the placement of the new slab. Also pumping the concrete in would be the way to go. Hand or machine mixing that much concrete would be one heck of a day and the cost may be cheaper than you think to have someone do it.

As a sidenote, if headroom is a problem and you have a relatively small basement you could possibly lower the slab to gain additional headroom. As long as the slab stays completely above the bottom of the footings and water is not an issue you should be OK. Ths may gain you as much as 2 feet. Also if you would like to go deeper you could speak to an engineer who could design an underpinning system which will allow you to go as deep as you want. All of this would come at a cost but is always an option.

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