Brielle, NJ – HMI, The leading manufacture of concrete raising equipment and polyurethane material has been featured in an article by the leading online resource for spray foam contractors-Spray Foam Magazine. Foam Lifting is a trend that is gaining more and more popularity among existing spray foam contractors and entrepreneurs.

The article details the benefits of Foam Lifting and what tools a spray foam contractor might need to get started.

The writer Ryan Spencer highlights the importance of material designed for concrete raising and the importance of training and working with a manufacturer that has experience in the Concrete Raising Industry since the early 1970′s

Please click through to SprayFoamMagazine.com and enjoy the article. Learn more about why HMI is the leading manufacturer of concrete raising equipment and material.

About HMI

HMI manufactures a variety of concrete raising equipment and different foams for concrete lifting. Foam Lifting is a new trend in the concrete raising industry that uses polyurethane foam to stabilize and lift settled or undermined concrete. HMI provides complete training seminar opportunities for those that are interested in learning more about concrete raising. For more information please call 800-626-2464 or click here to complete an online request for additional information. 

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Getting a Lift – HMI Foam Lifting Material, Equipment and Training

Reaction Time Lapsed Video. This is a brief video demonstrating the reaction of the single component RR600 with catalyst added. If you would like to learn more about HMI equipment, materials or training, please call 800-626-2464.

Reaction Time Lapsed Video. This is a brief video demonstrating the reaction of RR600 without added catalyst. If you would like to learn more about HMI equipment, materials or training, please call 800-626-2464.

The RR401 is a polyurethane foam specifically designed for raising and stabilizing concrete. Ideal for heavy lifting, the reaction time is designed to mimic traditional mudjacking. HMI is the only company manufacturing foam that is uses recycled polyurethane materials. This is a two component 4 lb foam. HMI manufactures polyurethane concrete raising equipment and material along with the Industry’s best training. If you would like to learn more about HMI equipment, materials or training, please call 800-626-2464.

RR401G is a two component gas blown 4 lb polyurethane foam. It is designed to set up in wet conditions or underwater without compromising density or quality of foam. If you would like to learn more about HMI equipment, materials or training, please call 800-626-2464.

RR 300 is the two component foam manufactured by HMI designed for void filling. You will notice in this video that the material travels up and out of the cup before it starts to harded. This is why the material is so successfull in filling voids, it travels long distances finding voids and then reacts. For questions on this foam, HMI equipment or applications please call 800-626-2464

The RR201 is a polyurethane foam specifically designed for raising and stabilizing concrete. Ideal for residential and small slabs, the reaction time is designed to mimic traditional mudjacking. HMI is the only company manufacturing foam that is uses recycled polyurethane materials. This is a two component 2 lb foam. HMI manufactures polyurethane concrete raising equipment and material along with the Industry’s best training. If you would like to learn more about HMI equipment, materials or training, please call 800-626-2464.

Reaction Time Lapsed Video. This is a brief video demonstrating the reaction of RR600 without added catalyst. For more information on HMI materials and equipment call 800-626-2464.

This last week, HMI gave the World of Concrete a lift!  Over the course of three and a half days HMI completed 77 demonstrations to thousands of attendees at the World of Concrete.   HMI was the first company in the history of the show to successfully demonstrate the process of lifting concrete with polyurethane.

Our crew drove 32 hours out to Las Vegas from Wisconsin and worked hard to show you how fast, clean and easy polyurethane concrete raising is.  In this blog I would like to address some of the common questions we were asked.

How to you know when to stop or how much material to inject? 

HMI’s specially designed polyurethane foam reacts and expands in about 15 seconds.  Incrementally inject the material waiting the 15 seconds for the foam to expand.  As you approach the desired level you want the slab raised to, make the increments smaller to control how the slab is moving.  HMI is the only foam manufacturer with a 15 second foam reaction time.

How much does a system cost?

A complete polyurethane trailer system as used in the demonstration at the World of Concrete is $49,500.  Larger truck and customized systems are available, HMI can quote systems specific to your capacity needs and business plan.

What does the polyurethane system include?

Many people at the World of Concrete asked us, what does the polyurethane system for $49,500 include?  The short answer is – everything you need to pull up and complete your first job!  More specifically, the major components of the system is the generator, compressor, air system, reactor, transfer pumps, trailer, drill, saw, a drum set of material and injection tools including the patented HMI tip, clamp and injection ports that complement the gun.  Purchase of the systems also provides attendance to our HMI Training Seminar for up to 4 crew members.

Why do you use in injection port and clamp?

Pressure from polyurethane foam expanding raises the concrete slab.  This same pressure is looking for the path of least resistance.  The injection port is screwed into the hole with an expansion coupling and has a check ball to keep material from backing up through the injection port into the gun.  The clamp attaches the port to the gun’s patented HMI injection tip.  This allows the material to be injected with ease and between material injections allows the air flow to continue. This air purged hole allows you to inject material, wait and inject material again.  The air is keeping the hole open.  If you need to inject in a hole where material has set up, simply drill through the material and inject under the set up polyurethane to continue lifting.

Can this really be done with a one man crew?

Yes!  The HMI polyurethane system includes lightweight easy to use equipment.  Drilling, pulling out the hose and pumping can all be completed by one person.  After the work is completed, grease is injected in the gun preparing it for the next job and the hose is put away.  Patch the holes and move onto the next job.

Is the polyurethane material certified?

All HMI polyurethane foams are tested and held to the highest standards.  The material is ASTM tested and certified for quality.  HMI meets and commonly exceeds specifications for many DOT projects.  MSDS and Technical Data Sheets are available upon request.  Information required to certify the material for projects are available at any time.

Why do you have different types of foam?

HMI currently manufactures 5 different materials.  These materials vary from 2-4 pound densities with different reaction characteristics.  Soil stabilization, small slabs, highway slabs, void filling or lifting HMI manufactures specific material that will work best for each application.  HMI manufactures specially formulated material that will react aggressively enough to fill voids and raise concrete.  Traditional insulating spray foams are not strong enough to accomplish this.

Below is a video featuring one of the demonstrations presented at the World of Concrete; see for yourself what the thousands of attendees saw at the 2012 World Of Concrete.

If you are interested in seeing for yourself how polyurethane concrete raising works, please register to attend an HMI Training Seminar and try before you buy!  Click here to learn more about the HMI Training Seminar.