Table of Contents:
Table of Contents:
Flooring systems in demanding environments are exposed to more than everyday foot and equipment traffic. In facilities where temperatures fluctuate frequently or dramatically, repeated heating and cooling can place significant stress on the floor. This process, known as thermal cycling, can gradually contribute to cracking, delamination, and other forms of deterioration.
Understanding how thermal cycling affects flooring can help facility owners, designers, and contractors select systems better suited to the conditions of a particular environment.
What Is Thermal Cycling?
Thermal cycling occurs when a material is repeatedly exposed to changes in temperature. A floor may heat up during production or cleaning and then rapidly cool when exposed to refrigerated conditions, cold water, or ambient temperatures.
These temperature changes cause flooring materials and the substrate beneath them to expand and contract. When the temperature changes are frequent or severe, the repeated movement can place stress on the flooring system.
Thermal cycling is particularly important in facilities where floors regularly transition between hot and cold conditions, rather than remaining within a relatively stable temperature range.
Seamless flooring systems designed to withstand thermal shock help maintain long-term performance in environments exposed to sudden temperature changes.
How Temperature Changes Affect Flooring Systems
Most materials expand when heated and contract when cooled. Flooring systems are no exception. A resinous, seamless flooring system is made up of multiple components that work together with the underlying concrete substrate. Because these materials can have different rates of thermal expansion and contraction, temperature changes can create movement between the layers.
The potential effects of repeated temperature changes are significant enough that ASTM International has established test methods for evaluating the performance of cured systems under thermal cycling. ASTM D6944-15(2025) “Standard Practice for Determining the Resistance of Cured Coatings to Thermal Cycling” evaluates how repeated temperature changes can affect properties such as adhesion, cracking, checking and blistering. This highlights the importance of considering thermal cycling when selecting a flooring system for environments exposed to repeated heating and cooling.[1]
When a floor heats and cools repeatedly, the resulting stress can accumulate over time. The severity of the effect depends on several factors, including the magnitude and frequency of the temperature changes, the properties of the flooring system, substrate conditions, and installation quality.
Seamless flooring provides a durable surface in cold storage areas, where floors can be exposed to low temperatures, moisture, and frequent temperature changes.
Where Thermal Cycling Is Most Common
Thermal cycling can occur in many commercial and industrial environments, but it is especially common where floors are exposed to significant temperature swings as part of normal operations, including:
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Food and beverage processing facilities
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Refrigerated and freezer areas
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Cold storage facilities
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Manufacturing environments
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Pharmaceutical and life sciences facilities
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Areas subject to hot-water or steam cleaning
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Loading and receiving areas exposed to outdoor temperatures
In food processing environments, a floor may be exposed to refrigerated conditions during production and then subjected to hot-water cleaning. The repeated transition between these conditions can create significant thermal stress.
The Effects of Repeated Temperature Changes
Thermal cycling does not necessarily cause immediate flooring failure. Instead, repeated temperature changes can contribute to the gradual deterioration of a flooring system.
Cracking
Repeated expansion and contraction can contribute to stress within the flooring system. Over time, this movement may contribute to cracking, particularly when combined with substrate movement or other sources of stress. Cracks can allow moisture and contaminants to reach the layers beneath the floor, potentially accelerating deterioration.
Delamination
Thermal stresses can also contribute to loss of adhesion between flooring layers or between the flooring system and the concrete substrate. Delamination occurs when a flooring system separates from the substrate or between its individual layers. Areas experiencing significant temperature changes may be particularly susceptible if the system is not designed and installed to accommodate those conditions.
Loss of Adhesion
Rapid temperature changes can create stress at the bond between the flooring system and substrate. Moisture within the concrete can further complicate this relationship. Proper substrate preparation and selecting a flooring system appropriate for the expected service conditions are important considerations for maintaining adhesion.
Surface Deterioration
Thermal cycling can also contribute to deterioration of the floor surface, especially when temperature changes occur alongside aggressive cleaning, chemical exposure, impact, or heavy traffic. The combined effect of these conditions can be more demanding than any single exposure by itself.
Thermal Shock vs. Thermal Cycling
The terms thermal cycling and thermal shock are sometimes used interchangeably, but they describe slightly different conditions.
Thermal cycling refers to repeated changes between different temperatures over time. The changes may occur gradually or relatively quickly.
Thermal shock generally refers to a more sudden and severe temperature change, such as exposing a cold floor to hot liquids, steam, or boiling water.
A facility can experience both. For example, a refrigerated production area may remain cold during operation and then experience a rapid temperature increase during cleaning. Similarly, floors around ovens may repeatedly transition between elevated temperatures and cooler conditions. These environments can create a combination of repeated thermal cycling and sudden thermal shock.
Before and after: Stonclad UT provides a durable, seamless surface designed to withstand the frequent temperature changes and thermal shock common in demanding commercial kitchen environments.
Why Flooring System Selection Matters
Not every flooring system is intended for the same operating conditions. When thermal cycling is expected, flooring selection should account for the full range of temperatures the floor will experience, not simply its normal operating temperature.
Important considerations:
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Expected minimum and maximum temperatures
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Frequency of temperature changes
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Rate at which temperature changes occur
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Cleaning procedures and water temperatures
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Chemical exposure
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Moisture conditions
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Impact and traffic
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Concrete substrate conditions
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Installation requirements
Stonhard Flooring Systems for Thermal Shock and Cycling
Stonhard offers a range of flooring systems designed to withstand demanding temperature conditions, including repeated temperature changes and thermal shock. Recommended systems include:
|
Suggested Area |
Recommended Flooring Products |
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Food & Beverage Processing |
Stonclad UT, UR, UF; Stonshield UTS |
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Commercial Kitchens |
Stonclad UT, UR; Stonshield UTS |
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Refrigerated & Freezer Areas |
Stonclad UT, UR, UF |
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Manufacturing Spaces |
|
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High-Temperature Areas |
Stonclad HT, Stonshield HRI |
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Chemical Areas |
|
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Commercial & Light Industrial |
|
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Areas With Severe Thermal Exposure |
Stonclad HT, Stonshield HRI, Stongard TM |
High-performance seamless urethane flooring systems can expand and contract with changes in temperature, making them well suited for environments where floors are exposed to repeated heating and cooling. These systems can be used in demanding environments like food and beverage processing facilities, commercial kitchens, breweries, pharmaceutical and biotechnology facilities, and industrial spaces.
A system designed around the actual service environment can help reduce the stresses associated with repeated temperature changes.
Designing for Demanding Conditions
Addressing thermal cycling starts before the flooring is installed. The concrete substrate should be evaluated for moisture, condition, and existing cracks or joints. The flooring system should then be selected based on the anticipated combination of thermal, chemical, mechanical, and cleaning exposures.
Installation is equally important to the performance and lifespan of a floor. Proper surface preparation, detailing, and application help establish the bond and overall performance of the flooring system.
In environments with demanding temperature conditions, the goal is not simply to select a floor that can withstand a particular temperature. The flooring system must be considered as a complete assembly that will repeatedly experience the conditions present in the facility.
Proper substrate evaluation, surface preparation, and flooring system selection are important considerations when designing for environments exposed to repeated temperature changes and other demanding conditions.
Protecting Floors from the Effects of Thermal Cycling
Temperature changes are an unavoidable part of operations in many industrial and commercial facilities. While thermal cycling cannot always be eliminated, its potential impact can be addressed through appropriate system selection, substrate preparation, and installation.
Understanding how repeated temperature changes affect flooring systems is an important part of designing a floor for long-term performance. Selecting a system suited to the environment can also help reduce the potential for premature deterioration, repairs, and replacement.
About Stonhard
Stonhard is the unprecedented world leader in manufacturing and installing high-performance polymer floor, wall and lining systems. Stonhard maintains 300 territory managers and 200 application teams worldwide who will work with you on design specification, project management, final walk-through and service after the sale. Stonhard’s single-source warranty covers both products and installation.
About The Author
Justin Clarke
Global Accounts Manager
Justin is a Global Accounts Manager at Stonhard focused on the Food & Beverage industry. He supports customers with flooring solutions for demanding production environments and was named AD&E Representative of the Year in 2018 and 2022. Justin holds a Bachelor of Applied Science from Western Carolina University.
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