Hold on, it might not be that bad. - Posted by js-Indianapolis
Posted by js-Indianapolis on November 27, 2002 at 10:59:02:
I owned my own concrete business for almost 5 years. This may or may not be a water problem. I’ve seen slabs crack and settle more than three inches in just the first year. It doesn’t happen just from water, and assuming so might cause you to walk from what could be a nice deal.
I could go into 10 pages of why concrete cracks, and how it reacts to a freeze/thaw cycle in various climates. There are people who have obtained a Ph.D. in concrete technology. I’m very serious, a Ph.D…
Although I do not have a Ph.D., my company worked exclusively in concrete repair and beautification. One service that we contracted out was leveling. These companies might be called “mud jackers” or just concrete leveling companies. They will level anything from a sidewalk, to a whole house. They can even raise an entire two story chimney straight up. I’ve seen one raised over a foot.
The process is simple. They drill holes in the floor, and pump a limestone mixture under the slab, filling in any voids. It’s quick and inexpensive. Also, anyone who is worth a darn in the business will guarantee their work. So will it work, for your situation?
I can’t say, as I haven’t seen the slab. Although just assuming that you’ve got serious water problems is not correct. You might, and might not. Who knows what happened the day the concrete was poured. Maybe before the back fill around the walls, water washed out some of the base they were working on. Maybe they didn’t tamp that side of the base well enough, and the settling is just the base compacting under the weight. Maybe the crew was a serious bunch of idiots, and didn’t even put a base under that half of the basement. I’ve seen worse workmanship. It’s really not uncommon at all.
You need to keep in mind that anyone can pour concrete, and make it last long enough to walk off the job. As far as a guarantee on a new pour, there’s an unfunny joke in the concrete contractor business. Everyone says, “Sure it’s guaranteed…guaranteed to crack.” As not funny as that is, it’s the truth, it does, and will crack, guaranteed. It’s getting it to crack in the right places, and not having it settle that is the tough part. Although, if it does happen, it can be fixed.
See if a concrete pumping company is willing to warrantee squeezing a giant limestone base underneath it, and getting it level. If they say it’ll work, and put it in writing, I’d be confident you’ve got a solution. We used a company called A1 Concrete Leveling here. They sell franchises around the country, so you might have one in your area. Free quotes, so it won’t hurt you any to get their opinion.
Best of luck to you, let us know how it goes.