Concrete Crack Healer and Sealer

October 7, 2025

Fast Crack Healer and Sealer for Concrete Floors

When concrete floors start to show signs of cracking or surface wear, repairing them quickly and effectively can prevent costly downtime. Epoxy.com Product #684LV is a methyl methacrylate (MMA) resin system designed to penetrate, bond, and seal concrete surfaces — not just on bridge decks, but anywhere durable protection is needed.


What Makes #684LV Different

Unlike typical epoxies or sealers, #684LV is ultra-low viscosity and fast-curing. It seeps deep into cracks and pores in the concrete, restoring structural integrity while sealing out moisture and contaminants. Once cured, it forms a clear, tough, chemical-resistant surface that can be top-coated or left exposed.

  • Fast cure: typically 30–45 minutes even at low temperatures.
  • Deep penetration: bonds within the concrete matrix.
  • Chemical resistance: excellent for acids, fuels, and solvents.
  • Low downtime: floors can be reopened to traffic within an hour.

Ideal Uses Beyond Bridge Decks

While #684LV is trusted for infrastructure work, it’s equally effective in:

  • Industrial plants and warehouses – quick repairs between shifts.
  • Food and beverage facilities – sealing cracks to prevent bacterial growth.
  • Retail and commercial floors – keeping polished concrete from spalling.
  • Chemical and wastewater facilities – long-term protection from vapor intrusion.
  • Parking decks and ramps – extending the life of exposed slabs.

Wherever rapid turnaround and strong bonding are required, #684LV is a proven performer.


Application Notes

  1. Prepare the surface by cleaning and drying the concrete thoroughly.
  2. Flood-coat or broom-apply #684LV until refusal — allow penetration.
  3. Optional broadcast: silica sand for slip resistance or mechanical profile.
  4. Reopen to traffic within approximately one hour (temperature dependent).

For severe cracking, the material can also be pressure-injected to restore internal bond.


The Bottom Line

Epoxy.com Product #684LV gives contractors and facility managers a fast, permanent way to stop cracks before they grow — without waiting days for cure time. It’s a simple, reliable solution for extending the life of your concrete floor systems.


For more information contact:

Epoxy.com 
A Division of Epoxy Systems, Inc
A Vermont Corporation 
USA 

We have products that have passed the test of time as well as the best new Systems available today.

Since 1980 – 40 years of the highest quality products

Hours: 9AM-4PM Eastern Time (6AM-1PM Pacific Time)

Closed for lunch from 12Noon to 1PM


321-206-1833  Customer Service – Ordering and Order Status
                         Katey Lambert-Fontaine, VP – Chief Operations Officer
                         sales@epoxy.com

                        Technical Support
352-533-2167  Norm Lambert, President – Technical Support Director 
                         info@epoxy.com


The Advantages of Epoxy.com Products: Revolutionizing the Industry

January 17, 2025

When it comes to construction, repair, and maintenance, high-quality materials play a pivotal role in achieving long-lasting and reliable results. Epoxy.com has established itself as a leader in the epoxy industry, providing innovative products tailored to a wide range of applications. From industrial flooring and waterproofing to decorative finishes and structural repairs, Epoxy.com’s products deliver unparalleled performance, durability, and versatility.

This blog delves into the advantages of Epoxy.com products, exploring why they are the go-to choice for professionals and DIY enthusiasts alike.

1. Exceptional Durability

One of the hallmark features of Epoxy.com products is their remarkable durability. Whether applied to industrial floors, walls, or equipment, their epoxies are designed to withstand the harshest environments. This includes heavy foot and vehicle traffic, chemical exposure, and extreme weather conditions.

Advantages:

        •        Impact Resistance: Ideal for warehouses, manufacturing facilities, and garages, Epoxy.com flooring systems resist cracking and chipping, even under heavy loads.

        •        Chemical Resistance: Their products are formulated to withstand corrosive chemicals, oils, and solvents, making them a reliable choice for laboratories, factories, and food processing plants.

        •        Waterproofing and Moisture Protection: Epoxy.com’s waterproofing systems provide long-term protection against water damage, ensuring the structural integrity of surfaces.

With Epoxy.com, you’re investing in solutions that reduce maintenance costs and extend the lifespan of your projects.

2. Versatility Across Applications

Epoxy.com offers a comprehensive product line that caters to a wide array of industries and needs. From residential spaces to large-scale industrial facilities, their products can be adapted to virtually any project.

Popular Applications:

        •        Industrial Flooring: Durable, slip-resistant, and easy to clean, epoxy flooring is perfect for factories, warehouses, and workshops.

        •        Decorative Flooring: With customizable colors, patterns, and finishes, Epoxy.com’s decorative systems enhance the aesthetics of retail spaces, offices, and homes.

        •        Marine Coatings: Designed for the marine industry, their products provide exceptional protection against saltwater, UV rays, and abrasion.

        •        Structural Repairs: Epoxy adhesives and grouts are ideal for fixing cracks, bonding materials, and reinforcing structures in both residential and commercial settings.

No matter the project, Epoxy.com’s wide-ranging solutions ensure that you’ll find the perfect product for your specific needs.

3. Ease of Application

Epoxy.com products are designed with user convenience in mind. Whether you’re a seasoned contractor or a first-time DIYer, their products are easy to mix, apply, and cure, ensuring a seamless application process.

Why This Matters:

        •        Comprehensive Instructions: Each product comes with clear and detailed instructions to guide users through every step of the process.

        •        Self-Leveling Properties: Many Epoxy.com floor coatings have self-leveling features, which reduce the effort required for a smooth, even application.

        •        Versatility of Application Methods: Products can be applied using brushes, rollers, sprayers, or trowels, offering flexibility based on the project’s requirements.

With user-friendly formulations, Epoxy.com eliminates unnecessary complexities, allowing professionals and amateurs alike to achieve professional-grade results.

4. Customizable Aesthetic Options

Epoxy.com understands that functionality and aesthetics often go hand in hand. Their decorative epoxy coatings offer a blend of durability and visual appeal, enabling designers and homeowners to create stunning, customized finishes.

Customization Features:

        •        Wide Range of Colors: Choose from a vibrant spectrum of hues to match branding requirements, interior design themes, or personal preferences.

        •        Flake and Quartz Systems: Add decorative flakes or quartz to epoxy floors for enhanced texture, durability, and style.

        •        Matte or Gloss Finishes: Whether you prefer a sleek, high-gloss finish or a subdued matte look, Epoxy.com provides options to suit every aesthetic.

These customizable options make Epoxy.com products an excellent choice for enhancing the visual appeal of homes, offices, retail stores, and more.

5. Eco-Friendly Formulations

Sustainability is an increasingly important factor in product selection, and Epoxy.com is committed to minimizing its environmental impact. Many of their products are formulated with eco-friendly ingredients and processes, ensuring that performance doesn’t come at the expense of the planet.

Environmental Benefits:

        •        Low VOC Emissions: Many Epoxy.com products feature low levels of volatile organic compounds, improving indoor air quality and meeting environmental regulations.

        •        Long Lifespan: Durable products reduce the need for frequent replacements, minimizing waste and conserving resources.

        •        Recyclable Packaging: Epoxy.com takes extra steps to use recyclable and sustainable packaging materials.

By choosing Epoxy.com, you’re supporting eco-conscious solutions that contribute to a healthier planet.

6. Cost-Effective Solutions

While epoxy products are often seen as an investment, Epoxy.com ensures that this investment delivers exceptional value. Their products are competitively priced while offering long-term savings through reduced maintenance and extended product lifespans.

Cost-Effective Features:

        •        Durability: The long-lasting nature of Epoxy.com products reduces the need for frequent repairs or replacements.

        •        Energy Efficiency: Reflective epoxy coatings can improve lighting efficiency in spaces, lowering energy costs.

        •        Low Maintenance: Easy-to-clean surfaces reduce labor and cleaning material costs over time.

Epoxy.com offers an excellent return on investment, making their products an economical choice for projects of any scale.

7. Proven Performance and Industry Trust

Epoxy.com has built a reputation for delivering products that consistently meet or exceed industry standards. Trusted by professionals across various sectors, their solutions have been used in countless high-profile projects around the world.

Industry Validation:

        •        Certifications: Many Epoxy.com products are certified by organizations meet USDA, and EPA  standards for use in specialized environments such as food processing or medical facilities.

        •        Customer Testimonials: Contractors and homeowners alike praise Epoxy.com for their reliability, ease of use, and superior results.

        •        Wide Adoption: From large-scale industrial applications to intricate residential designs, Epoxy.com is a trusted partner for projects of all sizes.

This track record of excellence ensures that you can trust Epoxy.com for your most demanding projects.

8. Comprehensive Customer Support

Epoxy.com isn’t just a product provider—it’s a partner in your success. Their commitment to customer support ensures that users receive the guidance they need, from product selection to post-application care.

Support Services:

        •        Technical Assistance: Expert representatives are available to answer questions, provide recommendations, and troubleshoot challenges.

        •        Educational Resources: Epoxy.com offers tutorials, guides, and videos to help users master the application process.

        •        Custom Solutions: For unique or large-scale projects, Epoxy.com can provide tailored formulations and solutions to meet specific needs.

This level of support enhances user confidence and ensures that every project achieves its full potential.

Conclusion: Elevate Your Projects with Epoxy.com

Epoxy.com stands out as a leader in the epoxy industry, combining durability, versatility, and aesthetic appeal into one comprehensive package. Whether you’re repairing a cracked floor, designing a vibrant retail space, or protecting a marine vessel, their products deliver the performance and reliability you need.

By choosing Epoxy.com, you’re investing in:

        •        Long-lasting, high-performance solutions.

        •        Aesthetic and functional versatility.

        •        Environmentally conscious and cost-effective products.

        •        Unmatched customer support and industry expertise.

For professionals and DIYers alike, Epoxy.com products are the key to achieving flawless results that stand the test of time. Explore their extensive product line today and experience the Epoxy.com difference for yourself!

For more detailed information Contact Us Today:

Call:

321-206-1833 (orders)

352-533-2167 (technical support)

Email: sales@epoxy.com

Visit: www.epoxy.com


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.  


Happy Holidays

November 29, 2017

Allow Extra Time for Epoxy Orders

As we approach the holiday season, please allow extra time for order processing and delivery,

Extend Epoxy Installation Season into Winter

Holidays mean temperatures are getting colder in many parts of the country . Our company started out as an installation company in Vermont. Summers are very short and winters are very long in Vermont. To stay a viable company, we had to figure ways of working through the winter.

Tenting and heating areas during the winter is time consuming and expensive. The solution is found in resin products that will set in low temperatures. The most durable and cost effective options of installation at cold temperatures is Epoxy and Methyl Methacrylate.

Cold Temperature Cure Resins can also be used as a super-fast setting Resinous Mortar or Coating at normal temperatures. Our Cold Temperature Cure Resins used at normal temperature give you quick turnaround time for small jobs, or larger jobs that require a short turn-around time.

Cold Temperatures Epoxies

Cold Temperature Cure Epoxy Resins allow installation to be done at low temperatures as low as 35°F., (although it sets a lot faster at 40°F) expanding your epoxy coating and epoxy flooring installation season. Epoxy.com Cold Temperature Cure Epoxy Resins can also be used in cold storage areas like food processing areas, where the temperature cannot be raised higher than 35° F or so. Normal cured epoxy typically requires 50°F or more.

Depending on how you mix the aggregate into the products below, they can be used as a mortar for overlays, or a grout for sealing between other hardened construction materials.

Commonly Used Cold Temperature epoxies

Product #1 Cold Temperature Cure Epoxy Coating is 100% solids and specially formulated coatings for cold temperature applications. Cold Temperature Epoxy Coating #1 is able to cure at temperatures as low as 35°F. It is has Zero (0) VOCs. Since it has no VOCs, it has no solvent so it meets the strictest possible standard for a low VOC coating. It is often used in coolers and food preparation areas that require constant low temperatures. Product #1 Cold Temperature Cure Epoxy Coating is also frequently used in room temperature applications to meet super-fast cure, limited shutdown needs.

Product #10 Cold Temperature Curing Epoxy Mortar Resin – This product has a low modulus of elasticity (flexibility) and is Low Viscosity. The low viscosity allows heavy loading of the right fillers. The heavy filler loading helps not only to save money, but helps to maintain better thermal coefficient with respect to concrete and steel. The low modulus of elasticity prevents it from being brittle making it less vulnerable to thermal coefficient differences. It also gives it better impact resistance.

You can find more information on cold temperature cured epoxy at: http://www.epoxy.com/EpoxyColdCured.aspx.

Please send me your questions to me by email to norm@epoxy.com