These are settlement cracks of no significance. The performance guidelines I build under require no repairs to any cracks in concrete floors or poured foundation walls that are less than 6 mm. (See link below, pp.24-28.) Were the wall cracks wider, the standard repair would be epoxy injection. Epoxy injection used to repair minor cracks in new home foundation. Photo: Heather Joy Investments Here is a link that might be useful: Construction Performance Guidelines

So when Superior Walls started many years ago anyone could install the walls. Today that is not true. Only the franchisee can install the walls. I purchase my walls from Great Lakes Superior Walls out of Grand Rapids Michigan. The have a number of crews and when completed the crew certifies the install. They also have a site guy name Lon that inspects all the installs when completed and he also comes and makes sure all the blocking is installed on the walls as bracing. Hope this helps it's a great product that I have personally used to build 200 to 300 homes since 2000. Jim Moline

comfortdog - We are in Guilford County (Greensboro area). We're happy with them so far, but they were just installed, so only time will tell. My husband thinks it's the way to go, once your base gravel is set they come in and have the walls set in one day. I, too, had my reservations about the thickness of the wall and it being structurally sound. But most homes I've seen with them have two stories sitting on top of them, so they must be stout. SW has their own installers, so it made me feel a little more comfortable that they knew what they were doing since they do it on a daily basis.

"Service under the warranty is solely the responsibility of the licensee." and "(Licensees) provides a limited warranty on their Superior Walls products". In these situations where the buck gets passed from superior to the Licensees which then can be blamed on improper transportation, storage or faulty field workmanship and it becomes an up hill battle as the licensees hunts for scapegoats IMO. There are other causes of failure which could pass the buck back to you, such as a soil test in 15 years showing substandard soil characteristics, bad slab installation causing racking of the walls, excessive hydrostatic pressure, failed drain tile system, or anything else they can pass the blame on. In perfect conditions I'm sure the 1 3/4" concrete will hold up but what about not so perfect conditions, I wouldn't do it. Get 8" of solid poured concrete with a properly sized concrete footing, they can take the excessive hydrostatic pressure from complete saturation of the soil during a freak weak long rainstorm. These are engineered like a house of cards, one failure could be catastrophic to the entire wall system, and you see it every week with a $2 bolt causing a bridge to fall. And if the contractor is cheap and dumb enough to use crushed stone footings under these precast walls dirty stone can void the warranty, so save yourself a potential problem and don't even think about tightrope walking over a volcano.