Does Epoxy Smell? How To Get Rid Of Epoxy Smell?

Does epoxy smell? Epoxy is typically odorless or emits a subtle scent. However, when its resin and hardener components combine, they produce a stronger odor due to exothermic reactions during curing. This process releases vapors responsible for the distinct epoxy smell, often attributed to the hardener.

While epoxy's smell isn't pleasant during application and curing, understanding its causes can help minimize its impact. In this guide, we'll explore common factors leading to epoxy resin smell and provide practical tips to lessen it during application and eliminate it after curing.

Is Epoxy Safe To Smell?

Is epoxy smell dangerous? No, epoxy resins are the safest type of resins for harmful vapors.  Epoxies usually have a subtle scent, but how strong it is can depend on the specific type. Epoxy resins typically don't release many vapors since they have a low VOC content. However, those speedy "5-minute" epoxies, designed to cure fast, might give off a more noticeable odor as they set quickly. 

Generally, they can be used safely indoors, like in homes or garages. So, is epoxy resin safe food if it gives off an unpleasant odor? Read our comprehensive guide to grasp the important information about using food safe with epoxy resin to ensure your health. 

However, if exposed repeatedly to concentrated amounts, epoxy resin can pose several health risks to you, such as:

• Respiratory irritation: The intense aroma of uncured epoxy resin can sometimes bother your breathing, causing coughing, throat irritation, or even a bit of difficulty catching your breath.
• Headaches and dizziness: In some cases, exposure to the smell of uncured epoxy resin can trigger headaches or dizziness, particularly for individuals who are more sensitive to chemical odors.
• Allergic reactions: Certain people may have allergies to specific components or chemical additives found in epoxy resin, resulting in allergic reactions when inhaled. Symptoms can vary from mild to severe including nasal congestion, sneezing, watery eyes, or skin rashes.
• Sensitization: Continuous or repeated inhalation of epoxy resin fumes without adequate protection may cause sensitization. This means that a person can become more sensitive or allergic to the chemicals in epoxy over time, leading to stronger allergic reactions in the future.

5 Common Causes Leading Epoxy Smell

Let's uncover why epoxy has that strong smell! We'll discuss 5 common factors that lead to its distinctive odor.

Type of Epoxy

The type of epoxy used plays a significant role in determining the strength of its odor. Solvent-based epoxy tends to have a more potent smell compared to water-based epoxy. 

Additionally, the formulation of the epoxy matters; two-part epoxy, which involves mixing resin and hardener, can emit a more intense odor than one-part epoxy. This difference in odor intensity is often due to the presence of chemical solvents and additives in the formulation.

For example, Polyester and Vinylester resins emit strong odors when mixed and cured due to their high volatile content. They pose a hazard because of styrene. Polyurethane Resins release gasses as they cure, which can be harmful when inhaled in large amounts. 

The intensity of the smell emitted by epoxy can differ depending on the brand. Typically, epoxy labeled as Low-VOC (Volatile Organic Compound) will produce a milder odor compared to epoxy with higher VOC levels. We have compiled a list of the low-VOC best epoxy resin reviews for your projects, which are safe for your health use.

Volatile Organic Compounds (VOCs) are organic compounds that quickly evaporate into the atmosphere at ambient temperature. In epoxy resin, VOCs are often present in solvents or other additives. During curing or drying, these VOCs are released into the air, creating the characteristic odor associated with epoxy.

Temperature and Curing Process

Both the curing process and the strength of the epoxy scent are significantly influenced by temperature. The ideal temperature for the cure area to maintain to maximize resin curing and reduce odor is approximately 70°F. The outgassing process of epoxy resin stops once it has completely dried, leaving it odorless.

Ventilation and Air Circulation

During epoxy application and curing, inadequate ventilation can worsen the smell. Without proper airflow, volatile organic compounds (VOCs) may linger, making the odor stronger. Conversely, adequate ventilation and air circulation can aid in dispersing the smell more efficiently.

Quantity of Epoxy and Surface Area

The volume of epoxy applied and the extent of the surface it covers can impact the intensity of the odor emitted. Using larger amounts of epoxy and covering larger surface areas can lead to the release of more volatile organic compounds (VOCs), contributing to a stronger smell. Therefore, when working with epoxy, it's important to consider the quantity used and the surface area covered to manage odor levels effectively.

Sensitivity and Individual Perception

Everyone's sensitivity to smells varies, affecting how they perceive the scent of epoxy. Some people might find the smell bothersome, while others might hardly notice it. Factors like previous exposure to similar odors and individual differences in odor perception can also influence how strong the epoxy smell seems. 

The U.S. Centers for Disease Control and Prevention warns that certain chemicals in epoxy can cause fertility issues for men and women. If pregnant women are exposed to these chemicals, it could raise the chances of miscarriage, stillbirth, or birth defects. Therefore, they need to be careful when working with epoxy projects.

How to Minimize Epoxy Smell During Application?

When looking to minimize the potent epoxy smell during application, it's essential to adhere to best practices when using resins indoors. Here are 4 effective strategies to reduce the unpleasant scent.

Proper Ventilation and Air Circulation

Proper ventilation and air circulation are essential to minimize epoxy smell during application. This method is suitable for anyone working with epoxy indoors. It's especially useful when working in enclosed spaces like workshops, garages, or basements. There are a couple of ways you can do to have good airflow and ventilate properly.

First, investing in an air purifier with activated carbon filters can enhance odor removal, though the cost varies based on the purifier's size and features. Additionally, using a fan to improve air circulation is a budget-friendly option.

Timing and Temperature Considerations

Working during cooler parts of the day or in spaces with controlled temperatures can slow down the curing process, which might help lessen the odor. Aim for a cure area temperature of around 70°F for optimal resin curing and reduced smell. There's typically no additional cost associated with adjusting timing and temperature during epoxy application, making it an accessible solution for many epoxy users.

Personal Protective Equipment (PPE)

To minimize epoxy smell during application, wearing personal protective equipment (PPE) is crucial. This includes gloves, protective clothing, and a respirator mask with activated carbon filters. These items shield against direct contact with epoxy and harmful fumes, safeguarding your skin and respiratory system.

This method is suitable for anyone working in enclosed spaces or sensitive to strong odors. While costs vary based on the quality of equipment, investing in PPE ensures safety and comfort during epoxy applications. You have to wear a properly fitting mask to ensure no gaps where fumes could sneak in. 

Proper Curing Time

To reduce the smell of epoxy when applying it, make sure to allow enough time for it to cure properly. Proper curing ensures the epoxy sets fully and lessens its smell. So, how long does resin take to cure? Generally, it takes from 48 - 72 hours for epoxy resin to fully cure. However, this time will vary depending on the different types of resin. So, check out our guide for details on curing times for popular resins and tips to speed up the curing process.

How to Get Rid of Epoxy Resin Smell After Curing?

The smell of epoxy will go away over time, but it may take several days or weeks depending on factors like the type of epoxy, curing conditions, and ventilation. So, how to get rid of epoxy resin smell faster? Try the 6 following methods below:

Using Natural Odor Absorbers

Natural odor absorbers are suitable for anyone seeking eco-friendly solutions to eliminate epoxy smells post-curing. This method is versatile, applicable in various cases, and cost-effective.

Absorbers	Usage
Activated Charcoal	Used as a natural purifier for both air and water Take several hours or even days to eliminate the smell of epoxy completely
Baking Soda	Used around the house, including as a natural deodorizer and cleaning agent Neutralize epoxy’s odor temporarily
Citrus Peels	May not remove epoxy odor long term as it may return once the peels dry out
Vinegar	Effective in cases where the epoxy odor is lingering and strong Need to be reapplied periodically to maintain its effectiveness
Scented Candles	Used to cover up the strong epoxy smell after curing, providing a more pleasant aroma in the area May only offer temporary relief from the smell

Using Air Purifiers

Air purifiers are effective for eliminating epoxy resin smell post-curing, especially when ventilation alone isn't sufficient. They're suitable for anyone seeking improved air quality. Prices vary based on features and brands, making them adaptable to different budgets.

Using Exhaust Fans

Using exhaust fans is an effective method for removing epoxy resin smell after curing. These fans are suitable for anyone seeking to quickly ventilate and freshen up the area. They're ideal for spaces with limited airflow or where natural ventilation isn't sufficient. The cost varies depending on the type and size of the fan, but they are generally affordable and provide a long-term solution for odor removal.

Opening Windows and Doors

Opening windows and doors is a straightforward method to eliminate the epoxy resin smell after curing. This method is commonly used in homes, workshops, or any indoor space where epoxy is used. It requires no additional cost, making it accessible to anyone looking to freshen up their environment.

Cleaning Surfaces with Appropriate Solutions

To remove the epoxy smell in the house after curing, clean the cured surface with mild soap and water to eliminate any leftover residue causing the odor. This method is suitable for anyone looking for a straightforward solution. The cost is minimal, as soap and water are readily available household items.

Storing Epoxy Materials Properly

Storing epoxy components in airtight containers can help keep fumes from escaping and spreading throughout the area. Label these containers carefully and keep them in a cool, dry place out of direct sunlight. It's ideal for storing unused epoxy or materials. The cost depends on the type of containers used, but it's generally affordable.

Conclusion

Epoxy smell refers to the strong odor emitted by epoxy resin during and after application. This smell can be quite potent and unpleasant, often lingering in the air for some time. It is typically caused by the chemicals present in the epoxy resin. To minimize the smell during application, proper ventilation, wearing protective gear, and using high-quality epoxy products can help. Additionally, after curing, airing out the space and using odor-neutralizing agents can help eliminate any lingering smells, creating a more comfortable environment.

FAQs

How Long Does Epoxy Resin Smell Last?

The length of time it takes for the epoxy smell to go away will vary depending on the brand. Usually, the strong odor will go away within 8 to 10 hours. Although resin may take up to 3 days to fully cure, once it reaches the soft cure or demolding stage, you won't have to worry about any lingering fume

How Far Do Epoxy Fumes Travel?

If you are utilizing it in a closed environment, such as a basement, you should definitely utilize fans and a respirator. You can also get low amounts of fumes inside the house. Depending on the airflow and insulation up there, they may gather enough to annoy a sensitive individual. 

What Does Resin Smell Like?

Resin typically has a strong, chemical odor that some people describe as pungent or similar to paint thinner. It can vary depending on the type and brand of resin, but it's often characterized by its distinct, sharp scent.

Are Resin Smells Harmful To Pregnant Women?

The U.S. Centers for Disease Control and Prevention (CDC) advises that pregnant women should avoid smelling epoxy during pregnancy to reduce the risk of fertility problems, miscarriage, birth defects, and stillbirth.