Uretek...anyone used it?

A friend has purchased an old brick tragedy with more cracks that can be counted. An engineers report suggested Uretek to use as a reinforcement. Has anyone heard of or used it before?
My gut feeling is to bog it all with no more gaps and repair it down the track.
Any thoughts... 

Bog and patch is always an option as long as there is a way of measuring the movement behind the repairs.  Often the exposed brick work of exterior walls is a good place to monitor movement.  You don’t want to hide a serious problem though.  I’ve been told that anything between 10 and 20mm movement is considered significant and you should get a professional to look at it.  Have a look at the information on Jetpin Australia's website in their Frequently Answered Question section.  I know from experience that Jetpin’s advanced underpinning system has saved some fairly tragic homes.  I’m not sure where your friend is located but Jetpin Australia operates in the Melbourne metro area.

A couple of points:

If it is sufficiently serious to warrant an engineer's report, then follow their advice. Has the engineer indicated whether the problem has been caused by footing failure or by the drying/wetting cycle of the reactive clay (or other material)? If this is a footing failure, then the cracks will only continue to the point of failure (in an unknown timeframe).

Cracks less than 5 mm you could get away with a bit of bog however you are talking serious movement here.

If you undertake the repairs, what is the remaining life of the building? ie will the cost of the repair outweigh the useful life/should you look at partial demo and rebuild/extending the house instead?

Uretek is not a reinforcement - it is grout injection into the soil to increase its bearing capacity and to raise the slab back to its original position/limit further movement. This engineered solution should reduce further differential settlement.

I am opinionated. Take me at face value, read between the lines.

http://www.reao.com.au/forum/entry.php?80-How-bright-is-your-agent

Used the uretek system about 18 months ago and it worked amazing. Had a double storey town house in melb. where the outside bearing wall sunk 30mm and needed to be raised and underpinned. Instead of underpinning, i contacted uretek and they came in for one day and injected the two part mix and it lifted the slab back to the original possition. It cost about 15K to lift 10m of outside slab. After they had finished, i had to repair a small amount of brick work which had cracked from sinking. Highly recommended. No mess and quick

May I draw your attention to an important Uretek experience on another forum? Link and content pasted below.  

It is also my understanding that with chemical underpinning such as this that clients need to get a firm MATERIALS quote upfront like I did with a mob in Adelaide called Urathane Solutions Pty. Ltd. who guarantee all clients that there will be no further material cost, and that Urathane Solutions totally covers any excess cost themselves, should it happen.  My understanding is that quotations from Uretek can vary significantly for materials once the job is in process, and come as an unpleasant surprise.So make sure your quote for materials for underpinning is fixed whoever your contractor is.

http://www.notgoodenough.org/viewtopic.php?p=317788#317788

Yes, my wife and I almost lost our house thanks to this organisation and what they conveniently omitted to tell us about their product, Uretek, which is used to stabilise buildings and other structures as a result of subsidence issues. The company deliberately failed to inform us that, when the substance - think hair mousse - is exposed to oxygen and cracks open, it spontaneously ignites causing a fire! Well, ignite it did, and it took an MFB fire unit to put out the fire, after having cut a huge square hole in our lovely and impossible to replace floor-boards. I have the photos to prove it! Uretek were complete bastards to us - they never even apologised to u - ultimately threatening injunction proceedings against us if we tried to warn other consumers about the dangers with their product. Nasty, nasty! JDC.

Uretek did a great job! There was no dust to clean up.  Our house was more leveled than I expected it to be.  As far as we know everything was done well.  The technicians did a great job, and the sales representative was very professional and enjoyable to deal with.  We were impressed with how quickly the project was completed.  We were very pleased with Uretek's performance, before, during, and after the job.  We were well educated during this project.  Our walls moved into place, doors opened and closed, and cracks in the wall closed!  It was pricey, but well worth it. Overall, great crew and customer service.