Mitigation of Concrete Slab Chemical Vapors

January 29, 2020

How do I stop chemicals gas vapors from contaminated soils passing though a concrete slab? This is a question I get frequently from owners and environmental mitigation experts.

Background

Chemical contamination vapors tend to pass though a concrete slab and get into the air above. Stopping the migration of the gas through a slab is frequently a requirement of repurposing a space.

The following steps can be used to mitigate chemical vapors into your space above it. Without the right tools these vapors in the air from contamination under that slab can be quite pervasive.

Each job needs to be evaluated on an individual bases. The tools below make the solution less evasive.

Cracks through the Concrete Slab

The most direct way for soil contamination gasses to get in is through cracks. Cracks are the path of least resistance, so most of your vapors come through cracks in the floor. That is a very easy fix Product #684LV – Methyl Methacrylate Crack Healer and Sealer.

The #684LV has about the viscosity (thickness) of diesel fuel. That makes it easy to gravity feed into small cracks small porous areas of the concrete. It welds the cracks back together with a bond strength that is greater than the tensile strength of the concrete. In other words structurally you have the monolithic structure that the concrete was intended to be.

Expansion Joints

Expansion joints are the also a very direct route for vapors to come in. To seal these joints use Product #632 – Chemical Resistant Joint Filler. This is a highly chemical resistant joint filler. It will not only keep the vapors out. If there is going to be a chemical exposure to the surface there will it will stop the chemicals from attacking your concrete and further contaminating the soils below it.

Sealing the Surface of the Concrete Slab.

The next step is to prime the concrete with Product #12 Chemical Resistant Primer / Sealer.

This is where there is a couple of ways to go. You can apply an additional coat or coats of the #12 or go on to Coating the Concrete Slab below. Our optional translucent Synthetic Anti-Skid Fine may be added to the #12 if it is used in additional coats as a clear sealer.

The Product #12 Primer Sealer can also be mixed with silica sand and used as a patching material for potholes and otherwise damaged concrete if required.

Coating the Concrete Slap 

In many cases you will want to install a coating over the concrete slab.  There are a number of options for doing this but here are a few of the most common ones.  The biggest difference between these coatings is the chemical resistance. Please See Chemical Resistance Chart for a comparison of chemical resistance of the products below. All of these products are 100% solid, zero voc.  All of the coatings in this section are highly durable and resist the abrasion of traffic. 

UV Resistant Top-Coating

For jobs that will see direct sunlight.  It may be desirable to add an ultra violet (UV) Resistant top coating for the systems above.  


Epoxy Chip Floor Stays Clear

October 19, 2018

epoxy_chip_flooring_263s

Here is the picture of the chip floor – www.epoxy.com/chips.aspx  that that was about 15 years old when the picture was take. It is in a Vermont Interstate Rest area.  It has never been waxed. You can still see the ceiling lights reflecting off the surface. Only maintenance has been to mop it.

Chip Floor install:

Links that will make your Chip Flooring installation better and easier:

Do with Epoxies

Don’ts with Epoxies

Surface Preparation

https://news.epoxy.com/2016/01/25/acid-etching/

Chip Flooring Installation Guide

Job Supplies – for roller applications

 

Chip Flooring Tech data:

Tech data and installation:

http://www.epoxy.com/chips.aspx

http://www.epoxy.com/ChipFlooringInstall.pdf

http://www.epoxy.com/job-supplies.aspx

http://www.epoxy.com/315.htm

http://www.epoxy.com/315bc.htm

 

MSDS:

http://www.epoxy.com/msds/315BC_Part_A.pdf

http://www.epoxy.com/msds/315BC_Part_B.pdf

http://www.epoxy.com/msds/315.pdf

 

Cove:

 

 

Cove information:

www.epoxy.com/720.aspx

http://www.epoxy.com/Seamless_Epoxy_Cove_Installation_720.aspx

 

http://www.epoxy.com/msds/720MSDS.pdf


Concrete Crack Healer & Sealer

February 9, 2017

Repair Cracks in Bridge Decks

And Similar Horizontal Concrete Surfaces

Low Viscosity Fast Setting Methyl Methacrylate (MMA)

Permanent Crack Repair System

MMA CONCRETE CRACK HEALER and SEALER Product #684LV is a 100% reactive ultra-low viscosity methyl methacrylate resin used as a penetrating crack sealer or to fortify extremely porous concrete substrates. MMA CONCRETE CRACK HEALER and SEALER Product #684LV is typically used on bridge decks, parking structures, concrete floors or as a general penetrating sealer to prevent moisture intrusion.

MMA CONCRETE CRACK HEALER AND SEALER Product #684LV is a reactive methacrylate resin, which hardens rapidly with the addition of Product #695 MMA HARDENER, even at low temperatures.

ADVANTAGES

  • Fast Cure (60 min.) for Rapid Recoat and Return to Service
  • Ultra-Low Viscosity for Excellent Absorption Into Concrete
  • Protects Against Water Penetration
  • VOC Compliant (100% Solids)
  • Full Strength in 1 Hour
  • Use Over Wide Temperature Range – Even Below Freezing – Adjust for Temperature in the Field

CONSIDERATIONS

  • Substrate must be dry and free of dirt, waxes, curing agents and other foreign materials.
  • Should not be installed on fresh concrete until maximum shrinkage has occurred (at least 30 days after placement).

COMPOSITION

MMA CONCRETE CRACK HEALER and SEALER Product #684LV is a 100% reactive methyl methacrylate resin. Color is supplied is clear.

USES

  • Bridge Decks
  • Containment Structure Floors
  • Plant Floors
  • Concrete Slab on grade
  • Suspended Concrete Slab
  • Virtually any horizontal concrete surface

For more information about repairing infrastructure visit our website at: http://www.epoxy.com, email us at info@epoxy.com or phone technical support at +1 (352) 533-2167


NOVOLAC EPOXY WALL COATING – 100% SOLIDS

January 23, 2017

High Chemical Resistance Epoxy Coating

Epoxy.com Product #633W


Introducing highly chemically resistant Novolac epoxy wall coating.  Bring your chemical resistance to new heights. Apply this Novolac Epoxy Wall Coating on walls in thicker coats, with less runs.  Same great chemical resistant Novolac Epoxy as Product #633, but thicker.

Description

Epoxy.com Product #633W is a 100% solids epoxy novolac coating ideal for harsh chemical and solvent environments. “W” designates High Viscosity formulation for improved film build on vertical surfaces. Epoxy #633W can be used as a seal coat for various Epoxy.com products and systems where extreme chemical resistant performance is required, such as secondary containment, solvent storage, pump pads, trenches, chemical process areas, and other high exposure areas.

Epoxy Novolac Wall Coating is 100% solids, modified amine adduct cured epoxy novolac (novolac epoxy) resin.

Advantages

  • Exhibits excellent resistance to strong acids, alkalis, and most industrial chemicals and solvents.
  • Can be applied in occupied facilities.
  • Can be applied in cool damp conditions.
  • Can be rapidly re-coated in ambient conditions.

Considerations

Good surface preparation is one of the most important parts of the installation of a high end coating. Be sure to follow our
Surface Preparation Guide before installing this product.

Installation

  1. Review and follow epoxy installation tips
  2. Properly prepare the substrate.
  3. Mix small batches of the material with 2 parts “A” and one part “B”, being sure to completely mix for 3 min. Mix only what you can use in half the potlife. Remember the bigger the batch the faster it will setup in your bucket
  4. Installation methods will vary from job to job. Typical application is by brush and quality roller.
  5. Contact Epoxy.com Technical Support with any questions that you have.

Physical Properties

Color See Color Chart
Gloss, 60°F 100
Solids Contentr 100%
Mix Ratio 2A to 1B by Volume
Pot Life 20 min @ 75°F
VOC 0.0

Dry Time

Foot Traffic @ 75°F 10-12 hours
Recoat #75&deg:F 4 hours minimum, 16 hours maximum
Exposures to Chemicals @ 75°F 5 days

Chemical Resistance

REAGENT

RATING

Acetic Acid 30% R
Acetone L
Methylene Chloride L
Crude Oil R
Diesel Fuel R
Ethylene Glycol R
Fatty Acids R
Gasoline R
Metyl Ethyl Ketone L
Hydrochloric Acid- 36% R
Urea R
Bleach R
Citric Acid R
Skydrol R
Sodium Hydroxide – 50% R
Sulfuric Acid – 98% R
Toluene R
Lactic Acid R
Nitric Acid 20% R
Xylene R
R = Recommended for Intermittent Immersion

L = Limited recommendation, occasional spills

Performance Properties

Tensile Strength ASTM-D-638 10,400 psi
Adhesion to concrete ACI Committee 403 300-440+ psi (100% concrete
failure)
Hardness ASTM-D-2240 86 Shore D
Abrasion Resistance ASTM-C-501 (CS-17 Wheel) 30 mg loss
Service Temperature MIL-D-3134F 180°F – 325&deg:F (Dry Heat)
Elongation 2.5%

For more information visit our website at http://www.epoxy.com, email us at info@epoxy.com or call technical support at: 352-533-2167.


Epoxy Installation Instructions

January 5, 2017

How to Install Epoxy.com Resin Systems


INSTALLING EPOXY RESIN SYSTEMS

Proper mixing and installation is critical to the best success of all epoxy products.  This page is to help you find the right installation information that you need to install Epoxy Resin Systems.

Surface Preparation for Epoxy Resin Installation

All quality installation start with quality surface preparationThis guide will help you to know how to properly prepare your substrate for installation of Epoxy or any other high quality resin system. Improper surface preparation could turn what seems to be a simple process into a lengthy, difficult repair.

Do and Don’t do with epoxy.

These guides will help you to not make the common mistakes that people do and the things the people don’t do that can lead to a problem or even a failure of your epoxy resin installation.

Job Supplies Required to Install Epoxy Resin Systems

This list is  a suggested list of the materials that you will need for most typical epoxy coating systems. This list is also useful for installing roller applied coating systems like Epoxy.com Chip Flooring.

Epoxy Installation Guides

Epoxy Chip Flooring System
Installation Guide

Epoxy Chip Flooring Installation Guide. Floors have a special role to play in interior design. The heavy technical demands made on floors often make the use of certain decorative products simply impossible. The use of color chips can change all that! Color chips are increasingly being used in combination with “wet” products such as Product #315 Seamless Polymeric Multi-Colored Flake Chip Floor Resurfacing System to create decorative floors with more to offer than other ornamental products…Quality! This installation guide takes you step by step through the installation of Epoxy Chip Flooring Product #315.

Product #1 High Build Epoxy Coating 21-27 mils – All Purpose Epoxy Floor Coating Installation Guide.

Product #1 All Purpose High Build Epoxy Floor Coating a two component, zero (0) VOC, 100% solids epoxy Hi-Build epoxy coating used for high foot traffic and light to moderate forklift traffic areas where abrasion resistance is required; for protection against mild corrosion and as a decorative waterproof coating for walls, floors, tanks, etc. Installation Guide For All Purpose High Build Epoxy Floor Coating #1.

1ESD / Conductive – Electrostatic Dissipative Epoxy Floor Coating Installation Guide

Conductive Epoxy Floor Coating Installation Guide –  Product #1ESD Epoxy Coating System consists of Product #899 Epoxy Primer followed with one finish coat of Product #1ESD/Conductive Epoxy Coating. Product #1ESD/Conductive is available in pigmented finish only. Product #1ESD Epoxy Coating System will test in the �ESD� range, between 1,000,000 and 1,000,000,000 ohms electrical resistance when Product #1ESD/Conductive is applied over a non-conductive primer (or non-conductive bodycoat), and produces a 12-15 mil thick ESD floor coating system. This guide will take tell you how to install the Conduct Epoxy Floor Coating.

Product  #2 High Chemical Resistance Epoxy Floor Coating Installation Guide

Chemical Resistant Epoxy Coating Product #2 is a two component, 100% solids, Zero “0” VOC epoxy chemical resistant coating used to protect chemical concrete, steel and other structural materials from non-oxidizing acids and alkalines for both interior and exterior applications.This guide will take take you through the steps to
install the Conduct Epoxy Floor Coating.

Product #15 Chemical Resistant Epoxy Quartz Flooring

Product #15 Chemical Resistant Quartz Flooring Installation – Single Broadcast Installation Method

Product #633 Novolac Highly Chemical Resistant Novolac Epoxy Floor Coating Installation Guide

Product #633 Novolac Epoxy Chemical Resistant Epoxy Coating is a 100% solids epoxy Novolac coating ideal for harsh chemical and solvent resistant applications. Product #633 Novolac Epoxy Chemical Resistant Epoxy Coating is used in secondary containment, solvent storage, pump pads, trenches, and other high exposure areas. This Installation Guide will help you install Product #633 Novolac Epoxy Chemical Resistant Epoxy Coating. You can also find more information with pictures about installation on this page the Epoxy.com Blog.

Epoxy Injection Installation

Epoxy Injection – This Guide will take you through the basics of doing epoxy injection.  Epoxy injection is one of the most economical, to make a structural repair and waterproofing in cracked concrete.

Additional Installation Guides

These are just a few or our most popular products for additional products and guides pleas contact us at:

 For more information visit our website at: www.epoxy.com , call technical support at 352-533-2167 or email us at info@epoxy.com.


Care of Epoxy Floors

November 1, 2016

Epoxy Flooring Systems and Coatings

Daily Maintenance of Seamless Flooring and Floor Coatings

  • Sweep the floors daily.epoxy_chip_flooring_263s
  • If abrasive particles  are present they should be removed by mopping with common household detergents and rinsed completely.  Be sure not to use the detergent at a concentration higher than that recommended by the manufacturer of the floor cleaning material.  Be sure to test any cleaner that you haven’t used before on a sample of the Seamless Flooring Material or Seamless Floor coating.  You may want to be sure to prepare these samples as you are installing the floor so they will be available to you at a later time.
  • Promptly remove grease, and other contaminants from the surface of the floor
  • Be sure to rinse off all chemical solutions that may attack the surface.

Weekly Maintenance of Seamless Flooring and Floor Coatings

Smooth Systems

All seamless flooring and floor coatings should be mopped on a regular bases with a neutral soap or detergent, and completely rinsed. Be sure not to use the detergent at a concentration higher than that recommended by the manufacturer of the floor cleaning material.

Be sure to test any cleaner that you haven’t used before on a sample of the Seamless Flooring Material or Seamless Floor coating.

Mop should be rinsed often. Synthetic mops tend to work better on textured surfaces than cotton mops. The water should be changed frequently as well. Smooth floors are easily cleaned this way. It may be necessary to give extra care to areas that are subject to heavy traffic, hard rubber wheels, and steel wheels that leave marks. In these situations you can use the methods used for textured floors for these more difficult to remove contamination.

Textured Systems

Textured systems may require the use of a stiff bristled brush or floor scrubber to reach to bottom of the anti-skid texture.  Severe problem areas can be treated as follows:

Grease Removal

Grease is typically removed by Tri-sodium phosphate (TSP) or other commonly available biodegradable cleaner. Contact Epoxy.comTechnical Support Department with your specific questions.

Removing Dairy Products

Dairy products should be removed immediately as they may cause staining on some types of seamless flooring and seamless floor coating systems.

Tire Marks Removal

Scrub the area(s) with a stiff bristled brush and using the same biodegradable floor cleaner that you are using to mop with.

Stubborn Dirt or Stain Removal

When you are trying to remove stubborn dirt or stains,allow the biodegradable cleaner to set in the area for a little while longer and do the work for you. Then completely rinse to area to remove the cleaner and the dirt.

Chemical Spills

You should always rinse strong chemicals as quickly as possible completely from the surface. Chemicals allowed to dry on the surface typically become more concentrated as they dry.  That may cause the chemical to get concentrated enough to stain or even attack the seamless floor or seamless floor coating.

Waxing and Polishing of Seamless Flooring and Seamless Floor Coatings

Epoxy.com Epoxy and Urethane Seamless Flooring and Seamless Floor Coating Systems are very shinny and so waxing or polishing are not necessary.  If a floor is very old, or has seen extremely high traffic this shine may dull.  If it does then you can wax or polish the floor with standard commercial products that are designed for that purpose. Better yet, if this happens, you may want to renew or refinish your system – see below.

Renewing and Refinishing Seamless Flooring and Seamless Floor Coating Systems

Epoxy.com Epoxy and Urethane Seamless Flooring and Seamless Floor Coating Systems are designed to withstand heavy traffic and wear.  However, if there is enough traffic and/or abuse to cause the system to loose its shine, or show visible signs of wear, you may wish to restore the floor by “re-glazing” it.  Before re-glazing a flooring system or coating system you need to do the following:

  • Remove all wax, oil, grease and other contaminants from the surface
  • Lightly sand to break the shine
  • Consult with Epoxy.com Technical Support Department for the proper material to re-glaze you floor.  Be sure to follow all directions for installing the re-glazing material.

When in doubt contact Epoxy.com Technical Support at: info@epoxy.com or call us at 352-533-2167. You can also visit our website 24 hours per day at www.epoxy.com


Chemical Resistant Epoxy Selection

October 20, 2016

Requirements for a Chemical Resistant Epoxy or Vinyl Ester


Our Epoxy and Vinyl Ester product lines has extensive uses in Chemical Containment
and Chemical Resistance projects. The kind of product and systems we recommend are
based on a number of factors.  First we need to know exactly what you are doing:

  1. Are you patching concrete that has been damaged already? If so what is the extent
    of the damage?
  2. Do you need a secondary containment coating? If so what kind of traffic (if any)
    will this area see? Many of our systems will handle very heavy traffic.
  3. Are there any cracks that need repairing? If so how many lineal feet of cracks
    are there, what is the average depth and what is the average width. Repairing the cracks
    is the first step in making your project water and chemical tight.
  4. Are you looking to grout tile? We have chemically resistant Epoxy Tile Grout that
    has excellent chemical resistance.
  5. Is there any petroleum oil saturated concrete in the area. If so we have a product
    for that too.
  6. Is there any moisture vapor that is being transmitted through the floor?  We
    have solutions for that so please bring that to our attention when you contact us.
  7. Is this in an area where Static Disruptive or Conductive materials are needed (typically
    only in an explosive environment or where delicate electronics must be protected
    from static discharge).
  8. Total square footage of area requiring Chemical
    Resistant Epoxy or Vinyl Ester.

Then we will need to know some specifics about the chemical you are trying to protect
against:

  1. What is the specific chemical (or chemicals) that you are trying to resist against?
  2. What is the specific concentration of the chemical (or chemicals)?
  3. What is the duration of the exposure, before it will be cleaned up (if ever)?
  4. Is the exposure at an elevated temperature? If so what is that temperature, and
    how long will the chemicals be at this elevated temperature

If you have this information when you contact us, we can quickly help you to decide
what chemical resistant system is best and most economical for you.

Here is some additional reading that might interest you.

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For more information contact Epoxy.com Technical Support at info@epoxy.com or by calling us at 352-533-2167.


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