If you have experienced concrete cracks, it may not be a quality problem. Concrete cracks with time and sometimes this isn’t a major problem. It is only a problem when the crack is big enough to leak water or when it creates a structural problem but otherwise it’s just a matter of time any concrete will get cracks. This happens because of the damage from freeze and thaw cycles. Sometimes it also gets cracked because of other environmental factors like humidity and rain.
First thing you need to do is to assess if the crack is a problem. If you think it may be a problem, you should first contact a reputable home inspector and pay him to make an integrity report to check the structural integrity of your home. If the report is positive and there is no danger, just relax and don’t worry about the cracks anymore, however take pictures of them and check from time to time just in the case they are getting bigger. If there is a structural problem, you should contact your contractor if the house is less than 10 years old. By law they have to provide you a 10yr warranty period on new homes so, if the inspector recommends they should be fixed you can tell your contractor and, if he doesn’t want do to anything you can tell him you will file a complaint with the State License Board and you will attach the report.
When cracks appear in concrete flooring they shouldn’t constitute a serious problem. Usually this damage is caused by water so you have to first check where the source of water is and fix it. Later you’ll probably have to remove the flooring, seal concrete and then install flooring again. It isn’t always about water but still, it’s one of the most common problems though. Other problems may be the thawing and freezing effect which also affects flooring but this is more uncommon. Extreme temperatures (see some of the best deals on Roller Blinds Sunscreen) make concrete crack as well.
Concrete cracking happens on all kinds of concrete no matter the quality or how good the contractor did his job. If cracks appear after you poured it, probably it is because of the quality of the concrete or a botched job by your contractor, but when it has passed a long time, it is quite normal to have cracks due to environmental circumstances. When cracks appear not long after concrete was poured you should first talk to your contractor because it’s likely he used a lower quality concrete than you agreed. If it’s not a quality problem and it’s just because of weathering, then the best option is to apply epoxy sealer to it and hope for the best. If cracks appear again or new cracks are shown after you applied epoxy, maybe it’s time to change the slab. You don’t want to repair an old concrete slab because in the end you will have the same problem again and you’ll have to change it anyways.