Today I'd like to discuss a little "foam 101" info that addresses some commonly asked questions I get from slab lifting customers:

Density and Expansion

Technical Data for Each AP Lift Foam

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A large part of the market is still using old sprayfoam insulation guns to do heavy concrete lifting work. Let's take a look at some of the benefits of using a gun that's custom designed for slab lifting...

The Problem with Sprayfoam Insulation Guns Adapted for Slab Lifting

Don’t bring a knife to a gunfight! Sprayfoam insulation guns are made for the simple process of spraying foam at constant pressures. Slab lifting requires a gun that is designed to deal with changing pressures and back pressure without backing up or crossing over. Issues like leaky port connections, constant cleaning, and constant fumbling around with a clamp can drastically reduce production - adding a lot of man hours to each project. Not to mention long nights spent rebuilding and cleaning the gun after EVERY job. Did we mention that feeling in the pit of your stomach every time you have to call in yet another expensive replacement parts order? 

The Solution: A Gun Designed by Slab Lifting Experts for Slab Lifting Contractors

The MixMaster Pro was designed based on years of feedback from slab lifting contractors working in the field. Every known point of frustration and difficulty has been addressed in this sturdy, single-purpose gun. Further benefits include a lower cost of consumables (you can reuse ports with this gun), beefy check valves designed to handle the back pressure, and a short 10-minute breakdown/cleaning session at the end of each day. Not to mention the fact that this gun is a production BEAST - no leaky port connections, no fumbling with clamps. Watch your man hours on each project shrink accordingly. Did we mention you’ll have less replacement part orders? There are only a few inexpensive replacement parts on this gun - PERIOD.

Want to see side by side comparisons with other guns, additional key benefits, and more?

Voids beneath warehouse floors can be filled with AP Lift 475 foam. This product is great for slabs that rock and warehouse floors that have begun to sink. The video below shows an example of the product in action. Inside this warehouse, the floors have begun to rock and are unleveled - which can speed up wear and tear on valuable equipment. With this powerful polymer and its painless application procedures, unlevel slabs can be repaired at a rapid pace. Take a look for yourself!

Want in-depth info on how to repair unlevel warehouse slabs? 

 

In the previous installment of this two-part series, we looked at common slab settlement danger zones, causes of sinking slabs, and the many risks of neglecting a known trip hazard. This time around we’ll review the two most common non-polyurethane repair options, and then explore the three most common types of polyurethane slab repairs.

Non-Polyurethane Repair Options

Aside from polyurethane repair, the property owner has two other options: replacing the slab or mudjacking it with cement grout.  There are drawbacks for both.

Tear Out and Replace

Ripping out a slab and putting in a new one has three main disadvantages.  Namely, the process is…

• Environmentally unfriendly (landfill bound?).
• Messy (requiring heavy equipment and possibly damaging the surrounding area).
• Time consuming.

Mudjack with Cement Grout

Mudjacking may be less expensive than replacement, but the property owner is still facing a number of issues.

• It’s still a messy process.
• Cement grout washes out.
• The grout is heavy and can sink over time.
• The grout can crack and shrink over time.
• Not an impermeable water tight solution.

Structural Polyurethane Repair

Polyurethane repair has distinct advantages over replacement and mudjacking.

• Very clean installation process.
• Lighter than cement mudjacking grout and won’t sink over time.
• Will not shrink.
• Closed cell structure makes it water impermeable.
• Typically less expensive than replacement.
• Less time consuming to apply than a mudjacking or replacement solution, and ready for traffic 45 minutes after application.

Not to mention the strength of these polymers. For more on that subject, see our blog post Slab Jacking with Polyurethane Foam - How Strong is Strong Enough?

Trip hazard repair with polyurethane resin can require one or a combination of the following three approaches: lifting, soil stabilization and void fill.  Let’s take a close look at all three…

Lifting

Sunken concrete slabs can be lifted back into place with a-two component structural polymer foam designed to work in wet or dry conditions. The expansion force of the foam coupled with the pressure of a PMC proportioner pump can generate enough controlled force to lift virtually any structure back into position within 1/10” of the intended level.

Soil Stabilization

Unstable, eroded, or loose soil below infrastructure can result in settlement, damage to the structure above, and of course – trip hazards. Voids can be filled, soil consolidated, and water migration halted by permeating the soil with one of our ultra low viscosity polymer resins. Once the bearing capacity of the soil has been increased with this process (soil has been stabilized), then the structure can be lifted with our slab lifting process.

Void Fill

Water erosion beneath slabs can cause voids to form that weaken the structural integrity and allow higher water pressure to develop. Filling these voids with rapidly expanding foam that is designed to react in the presence of water will return the integrity to the structure and prevent trip hazards. We have polyurethane resins designed specifically for this type of application.

Whether you’re a property owner looking for a professional to repair trip hazards on your property, or a contractor looking for material and/or technical assistance – Alchemy-Spetec is at your service.  Give us a call at 404-618-0438 to discuss your trip hazard concerns.

Want in-depth info on concrete leveling procedures and products?

Concrete slabs sink for a variety of reasons.  The result is an eyesore and possibly a trip hazard that could - in a worst case scenario - result in a serious injury, a law suit and/or death.  Lifting slabs with polyurethane foam is safe, fast, and economical. 

Property owners and managers should learn how to deal with these liability issues NOW with the latest concrete repair techniques and preventative measures. If you’re a contractor, you need this information because it’s critical for YOUR customer – the property owner.

Common Danger Zones

Since an ounce of prevention is worth a pound of cure, it’s helpful to know where to look for potential sunken slabs, especially if you own or manage a large variety of properties.  As a contractor you’ll want to focus on these types of sites when looking for potential customers.  The three main property categories that tend to have slab settling issues are:

• Residential (single and multi-family).
• Commercial and industrial.
• Warehouse and logistical.

Residential sites can often have driveway, sidewalk, patio, or garage floor issues.  Commercial and industrial sites often contain showroom or factory floors made of concrete slab.  Warehouse and logistical centers can contain huge floors with massive square footage.  Because warehouse floors are often raised off the ground to incorporate a loading dock, they are particularly vulnerable to the formation of dangerous voids underneath.

Causes of Slab Settlement

Let’s take a look at why slabs sink in the first place. There are at least six main reasons:

• Equipment on surface putting too much weight on slabs.
• Erosion due to natural causes.
• Leaking drain pipes and water mains.
• Improper site drainage or poor water management from downspouts and gutters.
• Poor soil consolidation/compaction.
• Old trash pits from the original construction phase that were too close to the structure.

Familiarity with these common causes of slab settling can help a lot when attempting to diagnose the exact cause at a specific location.  For more, see our blog post series The Causes of Unstable Soil.

Results of Neglect

After becoming aware of a slab issue, the property owner has a critical choice to make.  To repair or not to repair – that is the question.  Neglecting a repair can have huge implications.  Here are a few possible results of neglect:

• Damage to vehicles and equipment.
• Unlevel racking and storage.
• Personal property damage.
• Sinkholes.
• Trip hazards.
• Employee injuries.
• Limitless liability issues.

Read that list a few times and seriously consider the very real possibility that one or more of these events may occur when a property owner neglects a slab repair.  As experts with many years in the industry, we’ve seen every one of these events unfold after a problem was ignored.

In the next installment of this two-part series, we’ll review the two most common methods for repairing a trip hazard aside from polyurethane, and then we’ll review the three most common types of slab repair with polyurethane: slab lifting, soil stabilization and void fill.

Want in-depth info on concrete leveling procedures and products?

This blog post explains how to develop a contract for a typical lifting job.  We’ll cover essential points such as Description of Process and Products, Scope of Work, Scheduling, Items Furnished by Others, Stipulations, Price, Warranty, Terms of Payment and Seeking Legal Counsel for Fine Tuning. 

PLEASE NOTE: This article covers situations that you may want to consider when preparing your contract.  It is not intended as legal advice, is not all inclusive, and has not been reviewed by any attorney.  It should not be relied upon as such.  Laws vary from state to state.  You should seek the advice of legal counsel licensed to practice law in your state before finalizing your contract documents.

Brief Description of Process and Products

It’s important to start by outlining the process and products you’ll be using.  Some of our current customers use blurbs like this… 

The slab lifting process consists of the injection of expansive high density polyurethane foam underneath the concrete.  This foam is manufactured by Alchemy-Spetec of Tucker, Georgia.  This high density foam has a quick cure time of 15 minutes to 90% weight load capacity, does not shrink, is hydrophobic, creates a moisture barrier, and is lightweight.

Scope of Work

Next you’ll want to be very specific about the scope of work for the project.  Use this section to explain to the customer exactly which areas will be lifted and exactly how you estimated the amount of material you’ll need.  (For a refresher on estimating material, see our blog post Estimating Material for Slab Lifting Jobs.)

Scheduling

It’s important to spell out the order in which certain events will take place and the time parameters in which you’ll be able to do the work.  For example, you may cover points like calling the appropriate agency to locate underground utilities on site before the job starts, coordinating with the engineer (if there is one) during the job, and outlining the days and hours in which you typically work.  You can also let them know how long it will typically take you to begin the job after they give you the green light. 

Items Furnished by Others

In this section you can briefly list any items that you expect the customer to furnish, such as access to and from the work area, electricity, water, etc.

Stipulations

It’s critical to inform your customer and also cover yourself regarding anything and everything that could go wrong on a slab lifting job.  Unlocated plumbing pipes accidentally infiltrated with resin, cracks in foundations lacking steel reinforcement, cracks in slabs, etc.  Be clear about what you will and will not be held liable for. 

Warranty

Alchemy-Spetec warrants that our resin products will not deteriorate or shrink for a period of 10 years after the date of installation.  You need to decide what type of warranty you will offer on your labor.  Many of our contractors offer to replace any failed product for a period of 1 year at no cost to the owner, and then at a pro-rated scale after that.  Be sure to exclude any damage done by acts of nature such as floods, earthquakes, hurricanes, etc. 

Price

Spell out exactly how much you will charge for labor and how much you estimate materials will cost.  You may want to break down the material cost into a per pound amount, so they have an idea how much extra they will be paying if you have to use more material than originally estimated. 

Terms of Payment

Lay out the terms of your compensation, including an up-front deposit amount, how long the customer has to pay the balance.  Many of our customers insist on the balance being paid upon job completion, to avoid any collection headaches. 

Seek Legal Counsel for Fine Tuning

Again, it’s important to note that these are just general guidelines meant to assist you in constructing a contract of your own.  Laws differ from state to state.  Once you have a rough draft completed, we strongly urge you to seek the advice of legal counsel licensed to practice law in your state.  An initial rough draft combined with feedback and fine tuning from an attorney will get you to a solid standard contract that you can re-use for many jobs to come.

Want a phone consultation to discuss your concrete leveling contract?

Leak Seal & Geotech Products & Procedures

March 14 & 15, 2019 at Alchemy-Spetec HQ in Tucker, GA

Last chance to register!

Get ready for a thorough education in Leak Seal, Slab Lifting, Soil Stabilization and the Alchemy-Spetec Deep Lift™ process. You’ll get hands-on training from a technical staff with decades of on-the-job experience.

Thursday - Leak Seal

• Leak Seal Product Line Overview
• Curtain Grouting
• Permeation Grouting
• Leak-Seal Product Mixing
• Pump & Packer Overviews
• Leak-Seal Accessories
• Municipal Applications
• Live Injection Demos
• Open Discussions

Friday - Geotech

• Geotech Product Line Overview
• Soil Stabilization
• Geotech Product Mixing
• Rig & Mobile System Overviews
• Geotechnical Accessories
• Slab Lifting Live Demo
• Deep Lift™ Overview
• Soil Testing with the
• GPR & Penetrometer
• Maintenance Discussions
• Pricing / Estimating / Cost Savings
• Open Discussions

Participants receive a Samsung tablet loaded with training material.

Your Instructors:

Stephen C. Barton (President/CEO), Jim Spiegel (VP Sales & Business Development), Andy Powell (Southeastern Regional Manager), Anthony Sandone (Eastern Regional Manager), and Charlie Lerman (Western Regional Manager). Each instructor is a seasoned professional with at least a decade of experience in the industry.

Leak Seal & Geotech Products & Procedures

March 14 & 15, 2019 at Alchemy-Spetec HQ in Tucker, GA

Balance your skill set with Leak Seal AND Geotech training!

Get ready for a thorough education in Leak Seal, Slab Lifting, Soil Stabilization and the Alchemy-Spetec Deep Lift™ process. You’ll get hands-on training from a technical staff with decades of on-the-job experience.

Thursday - Leak Seal

• Leak Seal Product Line Overview
• Curtain Grouting
• Permeation Grouting
• Leak-Seal Product Mixing
• Pump & Packer Overviews
• Leak-Seal Accessories
• Municipal Applications
• Live Injection Demos
• Open Discussions

Friday - Geotech

• Geotech Product Line Overview
• Soil Stabilization
• Geotech Product Mixing
• Rig & Mobile System Overviews
• Geotechnical Accessories
• Slab Lifting Live Demo
• Deep Lift™ Overview
• Soil Testing with the
• GPR & Penetrometer
• Maintenance Discussions
• Pricing / Estimating / Cost Savings
• Open Discussions

Participants receive a Samsung tablet loaded with training material.

Your Instructors:

Stephen C. Barton (President/CEO), Jim Spiegel (VP Sales & Business Development), Andy Powell (Southeastern Regional Manager), Anthony Sandone (Eastern Regional Manager), and Charlie Lerman (Western Regional Manager). Each instructor is a seasoned professional with at least a decade of experience in the industry.  

Leak Seal & Geotech Products & Procedures

March 14 & 15, 2019 at Alchemy-Spetec HQ in Tucker, GA

Only a few spots left! 

Get ready for a thorough education in Leak Seal, Slab Lifting, Soil Stabilization and the Alchemy-Spetec Deep Lift™ process. You’ll get hands-on training from a technical staff with decades of on-the-job experience.

Thursday - Leak Seal

• Leak Seal Product Line Overview
• Curtain Grouting
• Permeation Grouting
• Leak-Seal Product Mixing
• Pump & Packer Overviews
• Leak-Seal Accessories
• Municipal Applications
• Live Injection Demos
• Open Discussions

Friday - Geotech

• Geotech Product Line Overview
• Soil Stabilization
• Geotech Product Mixing
• Rig & Mobile System Overviews
• Geotechnical Accessories
• Slab Lifting Live Demo
• Deep Lift™ Overview
• Soil Testing with the
• GPR & Penetrometer
• Maintenance Discussions
• Pricing / Estimating / Cost Savings
• Open Discussions

Participants receive a Samsung tablet loaded with training material.

Your Instructors:

Stephen C. Barton (President/CEO), Jim Spiegel (VP Sales & Business Development), Andy Powell (Southeastern Regional Manager), Anthony Sandone (Eastern Regional Manager), and Charlie Lerman (Western Regional Manager). Each instructor is a seasoned professional with at least a decade of experience in the industry.  

Leak Seal & Geotech Products & Procedures

March 14 & 15, 2019 at Alchemy-Spetec HQ in Tucker, GA

The best classroom learning in the business! 

Informative presentations and group discussions packed with practical application instructions, business tips and more.

Get a thorough education in Leak Seal, Slab Lifting, Soil Stabilization and the Alchemy-Spetec Deep Lift™ process. You’ll also get hands-on training from a technical staff with decades of on-the-job experience.

Thursday - Leak Seal

• Leak Seal Product Line Overview
• Curtain Grouting
• Permeation Grouting
• Leak-Seal Product Mixing
• Pump & Packer Overviews
• Leak-Seal Accessories
• Municipal Applications
• Live Injection Demos
• Open Discussions

Friday - Geotech

• Geotech Product Line Overview
• Soil Stabilization
• Geotech Product Mixing
• Rig & Mobile System Overviews
• Geotechnical Accessories
• Slab Lifting Live Demo
• Deep Lift™ Overview
• Soil Testing with the
• GPR & Penetrometer
• Maintenance Discussions
• Pricing / Estimating / Cost Savings
• Open Discussions

Participants receive a Samsung tablet loaded with training material.

Your Instructors:

Stephen C. Barton (President/CEO), Jim Spiegel (VP Sales & Business Development), Andy Powell (Southeastern Regional Manager), Anthony Sandone (Eastern Regional Manager), and Charlie Lerman (Western Regional Manager). Each instructor is a seasoned professional with at least a decade of experience in the industry.