“Do you know Polyiso?”

What Is Polyisocyanurate Insulation?

One type of insulation you can choose for your RIDGLOK® tank insulation system is polyisocyanurate insulation.  This type of insulation is ideal for storage tanks in all industries because it does not absorb moisture (<1% Vol.) and can be used for both cold and hot operating temperatures (-40°F to 250°F). It also has a high R-Value of R-6 per inch. If you are not yet familiar with PIR or polyiso insulation, as it’s often called, here are some facts about this material:

How Is It Made?

Polyisocyanurate insulation is created from rigid, closed-cell foam. It has a core of foam in the center that has been placed between facers that provide a vapor barrier. Generally, these facers are made from fiberglass or reinforced aluminum foil.

Polyisocyanurate insulation is found in many different commercial and residential buildings, often used in the walls and roof. However, it’s also an ideal type of insulation to use for storage tank insulation systems, namely the Vertical Standing Seam Panel Insulation System (VSSI).

What Are The Benefits?

The biggest benefit to polyisocyanurate insulation is its R-Value per inch. It has the highest R-Value per inch out of any rigid foam board insulation, which means it’s very efficient and will greatly decrease the amount of heat or cold transfer between the tank contents and the atmospheric environment (<0.3 perms ASTM E96).  Polyiso is unique in that the R-Value increases with the thickness of the foam, so three inches of polyiso has a higher R-Value per inch than two inches, according to www.polyiso.org.  Tanks with RIDGLOK® VSSI systems (See Firgure-1) that use polyisocyanurate insulation will use less energy and keep the internal temperature of the tank very consistent in conjunction with heaters or chillers.

0001 (1)The compressive strength of polyisocyanurate insulation is structurally rigid at 20 psi (ASTM D1621).  It will adhere to metal jacketing well and handle light foot traffic.   The rigidity also helps maintain the structure of the VSSI Panel when installed in the field on storage tanks.

You can use polyisocyanurate insulation in environments that range from -40 degrees F to 250 degrees F. While it isn’t the most versatile insulation in regards to temperature range, it is still a good option for all tanks that must be kept at a consistent temperature under 250°F.  The flame spread performance tested at 75 or less, however is available in a less than 25 option (ASTM E84).

Environmental Benefits

Polyisocyanurate insulation is a great choice for “going green”. It reduces the amount of fossil fuels required to keep the tank at a specific temperature. This will reduce the company’s air pollution by cutting down on the greenhouse gases emitted from their tank equipment. The use of recycled materials in the insulation is another great environmental benefit. In some cases, the facers are made from 100% recycled materials. This insulation is also CFC- and HCFC-free, plus it is manufactured without using any blowing agents that deplete the ozone layer.

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What Being a National Insulation Association Certified Energy Appraiser Means



In every industry, there are certifications and licenses that experts in the field must obtain. Usually, these certifications require passing a specific exam or series of exams, and some have additional requirements such as having a specific number of years in the industry. While some of these certifications are optional, some industries require them. In the insulation industry, the National Insulation Association Certified Energy Appraiser isn’t required, but those who are in the insulation business can certainly benefit from this certification. The professionals at MC&I, Inc. who design & engineer the RIDGLOK® Vertical Standing Seam Panel Insulation hold this certification.

What Is the National Insulation Association?

The National Insulation Association (NIA) is a trade association that is a nonprofit organization. It represents any contractor, fabricator, manufacturer, and distributor who works in the insulation industry. This includes those who manufacture and sell parts and insulation accessories in addition to full insulation systems. The NIA was organized in 1953 and is headquartered in North Virginia. The group works to make certain that those in the insulation business are up-to-date on recent news, trends, and innovations.

What Is a NIA Certified Energy Appraiser?

A certified energy appraiser is trained to determine the optimal thickness of the insulation needed for a project. They are also able to estimate how much energy will be saved and covert that into a dollar amount to give their clients a good idea of what kind of return on investment they will be getting. These insulation professionals provide efficient, safe, and cost-effective assessments that can help clients determine the best insulation options.

Energy appraisers are a great help to those who want to save money and reduce their carbon footprint. Many companies that want to go green will have an energy appraiser work with them to determine what impact their company is having on the environment and how that impact can be decreased.

What Does it Take to be a Certified Energy Appraiser?

In order to become certified, a person must go through the Insulation Energy Appraisal Program. This program is taught over the course of two days and teaches participants a number of different skills related to determining the best thickness and calculating energy savings. The program is offered twice a year, once in the spring and once in the fall. Those who successfully complete the program and pass the exam, receive their certification.

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The Versatility of the RIDGLOK® Panel Insulation System


MC&I’s unique RIDGLOK® vertical standing seam panel insulation system is the most cost effective and low maintenance storage tank insulation option available today. The panels that make up this insulation system are manufactured in the United States, but that doesn’t mean that they’re only used in the U.S. In fact, RIDGLOK® Panel Insulation Systems are so versatile, that they have been shipped to many other parts of the world. For example, a dairy company in Burnie, Tasmania, recently purchased materials to insulate an anaerobic digester tank for a large 110.56’ x 31.33’ wastewater tank.

This panel insulation system was manufactured at the Reed, Kentucky, factory and then shipped to Tasmania via trans modal freight. It was used to insulate a tank designed to produce biogas. Insulation helps keep the temperature steady, a necessity in order to keep the tank working efficiently.

Versatile Uses

In addition to being used in a number of countries, RIDGLOK® Panel Insulation Systems can be used in a wide variety of different industries.  Because it can be customized to fit the dimensions of any above ground storage tank, there’s no project that can’t make use of RIDGLOK® Panel Insulation Systems. The fact that this insulation can be installed while the tank continues to operate, highlights yet another versatile ability of the system.

Here are just a few of the different industries that can take advantage of RIDGLOK® Panel Insulation Systems:

  • Agriculture
  • Chemical Plants
  • Energy
  • Fire Protection
  • Petrochemicals

RIDGLOK® Panel Insulation Systems can be used to insulate a wide number of tanks, including water tanks, chemical tanks, waste water storage tanks, and anaerobic digesters and more. It’s been used by municipalities, military bases, manufacturing plants, bio-pharmaceutical companies, and airports.

Why Choose RIDGLOK® Panel Insulation Systems

Why are RIDGLOK® Panel Insulation Systems used in all of these different industries? The insulation system has a number of different advantages to other types of insulation. As already mentioned, it can be installed while the tank is still in use, preventing costly shutdowns and lost time. It’s also very easy to maintain once it’s installed, and maintenance can be done while the tank is still in operation.

RIDGLOK® Panel Insulation Systems can also save a company a large amount of money by reducing costs in several different ways. First, insulation decreases the amount of energy needed to keep the interior of the tank cooled or heated to a specific temperature. Our system loses very little energy, so companies are able to use less fuel.  Second, by using insulation to improve the temperature regulation, there are fewer inconsistencies in temperature or slow-down times while the temperature is adjusted. This allows manufacturing plants to operate more efficiently and produce more products.

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Meeting Petrochemical Terminal Challenges


One of the most important tasks you have is to ensure that you keep up with the required maintenance on your petrochemical terminals. You know how devastatingly expensive it can be if you have a tank down for repairs. It’s worse if you discover that had the maintenance you deferred for a couple of months could have saved you all this trouble. MC&I, Inc. can handle not only the maintenance for you, but also the repairs.

Weather Considerations

Storage tanks have to be checked routinely because they are subject to a variety of weather conditions. If you are near the coast in Georgia, Florida or South Carolina, you know the kinds of abuse the weather throws at your tanks. You have to deal with the moisture, the sea salt and the corrosive effects they have on your equipment. And when those winds start blowing,  look out. If you have an older horizontal insulation system, you can end up with pieces flying off. You must get that repaired quickly or you’ll end up losing the insulation next.

The good news is that MC&I can handle that for you too. We are experts at maintaining, repairing and replacing tank insulation. We will find the right solution for you. We can save you money with the safe removal/repair of your existing insulation, which also increases the life of your insulation and prevents further insulation or tank damage. If the insulation cannot be repaired, we can implement a solution for that too.

What is RIDGLOK?

RIDGLOK is a vertical standing seam panel insulation system that can be used for both cold and hot tanks whether they are flat bolted, chimed bolted, glass lined, fiberglass, welded, stainless steel, or concrete. It is built to fit your specific design requirements and it can be used in both horizontal or vertical tanks. RIDGLOK has various insulation materials and our tank insulation systems are manufactured to the customer’s specific specifications. There are several insulation material options including Polyisocyanurate insulation board, Mineral wool Insulation, and Fiberglass Insulation.   Because of the long lifespan, low maintenance and durability,  RIDGLOK Panel Systems are the superior choice among all tank insulation systems.

The varying insulation types mean that we can create a solution for you that can insulate your tanks, whether you’re operating in temperatures of -40 or temperatures of 1200 degrees. All you have to do is give us the specs and we will design and manufacture an insulation system that will get the job done.



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RIDGLOK is Versatile


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The History of MC&I and RIDGLOK®


Mayes Coating & Insulation, Inc., also known as MC&I, was founded in 1998 with the goal of maintenance of storage tanks with an unparalleled work ethic.  It was founded by Bob Mayes, a professional in the field who has put more than 25 years into learning everything about storage tanks.   All of this experience in the field helps in every aspect of the business especially helping clients become educated in what they need.


MC&I offers a variety of different services for a wide range of industries and projects. There is no project too small or too large for us—we provide value in service and a competitive price. Some of the services we provide include manufacturing of the RIDGLOK® Panel Insulation System, our proprietary vertical standing seam panel insulation that is like nothing else on the market for storage tanks. RIDGLOK® Panel Systems can be applied to a wide variety of different tanks, including those used to store fire protection water, biofuels, asphalt, waste water, chemicals and petrochemical products.

Why choose RIDGLOK®?

What makes RIDGLOK® so useful, other than the fact that it can be used for many different types of storage tanks? RIDGLOK’s® strength comes from the ability to customize each insulation system for each client to fit the engineering specifications for the tank.  RIDGLOK® Panel Systems offer excellent temperature regulation and reduce energy consumption on heating or chilling equipment, as well as combine different types of metals and insulation options, allowing further customization to meet the needs of your tank, what its storing, and the jobsite environment.


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What RIDGLOK® Offers


The RIDGLOK® Vertical Standing Seam Panel Insulation System puts safety first. The system complies with NFPA 22, Section 16.4 requirements for tank insulation as outlined in the ASHRAE Handbook of Fundamentals. The panel systems can make use of various types of insulation depending on the operating temperature of the tanks and the needed R-value and moisture absorbency, including polyisocyanurate, mineral wool board, fiberglass, cellular glass blocks, pyrogel XT, and cryogel Z. A number of different metals can be used as well.

In particularly cold areas, you can combine RIDGLOK® with additional heater equipment in order to make it even easier and affordable to keep tanks at a specific temperature.

Ease of Installation and Maintenance

This system of tank insulation is unlike conventional insulation systems because it is made up of individual panels that require no maintenance.  They are also very easy to install and require no welding of shell supports.  Each individual panel can be replaced as needed, keeping overall maintenance costs low. Best of all, RIDGLOK® panel insulation systems can last for 25 years or more.

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Why Choose Ridglok?

Why choose Ridglok? Compare the advantages of Ridglok versus a conventional insulation system.

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The Advantages of RIDGLOK® Vertical Standing Seam Panel Insulation System

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If you’re looking to add insulation to your storage tank, you should consider utilizing the latest in technology – RIDGLOK® Vertical Standing Seam Panel Insulation System (VSSI), a more modern and cost-effective solution.

Here are a number of reasons why you might want to look at using RIDGLOK® insulation instead of conventional insulation:

• RIDGLOK® has a lifespan of more than 25 years. With other types of insulation, you may need to reinsulate your tank after 10 to 15 years.
• It’s very energy efficient and cost effective. It takes less time to install RIDGLOK® than other types of insulation. No welded insulation supports are necessary.
• Since you’re not replacing it as often, you save time and money. Additionally, when utilized with other heaters or cooling systems, it’s reduces the size of the primary system by complimenting with energy efficiency – which can save thousands of dollars.
• It’s a very flexible system. RIDGLOK® works well for both heated and cold storage tanks, plus it can be used on tanks of many shapes and sizes.
• RIDGLOK® panels are very durable and can be used in areas where the temperature regularly drops below freezing.
• Individual panels can also be replaced when needed, whereas other types of insulation often have to be completely replaced.
• The unique double-locking seam used in the panels prevents water from getting into the system. All of the attachments are located inside the system, protected from weather. With traditional insulation, the cladding is typically only fastened with screws and external banding, leading to a higher risk of corrosion under insulation by water infiltration.

When it comes to tank insulation, these are just a few reasons why RIDGLOK® VSSI is a far superior system to conventional insulation systems. If you’re interested in saving energy without maintenance down the road, we would love to discuss how the RIDGLOK® panel insulation system can work for you.

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