If you are considering using a concrete sealer, you might have concerns about its toxicity. Concrete sealers are applied to protect concrete surfaces from damage and staining, but some types of sealers may contain harmful chemicals that can pose a risk to human health and the environment.

In this article, we will explore the truth about concrete sealer toxicity and provide you with safety tips that can help you make an informed decision. We will also discuss different types of sealers, their composition, and the health risks associated with toxic sealers.

Key Takeaways:

  • Concrete sealers may contain harmful chemicals that can pose a risk to human health and the environment.
  • Safety tips can help you make an informed decision when using concrete sealers.
  • There are non-toxic, eco-friendly, and natural options available for those looking for safer alternatives.

Understanding Concrete Sealers: Types and Composition

Concrete sealers are coatings applied to concrete surfaces to protect them from damage caused by water, chemicals, or abrasion. They can also enhance the appearance of concrete surfaces by adding a glossy or matte finish.

Concrete sealers come in different types, each with its own composition and specific uses. The type of sealer you choose depends on the surface you are sealing and the purpose you intend to use it for.

Types of Concrete Sealers

Here are the most common types of concrete sealers:

Type of Sealer Composition Uses
Acrylic Sealers Water-based with acrylic resin Indoor and outdoor surfaces, decorative concrete
Epoxy Sealers Two-part system with epoxy resin and hardener High-traffic areas, surfaces exposed to chemicals
Urethane Sealers Solvent-based with urethane resin High-traffic areas, surfaces exposed to chemicals and abrasion
Silicate Sealers Lithium, sodium, or potassium silicate-based Garage floors, industrial floors, outdoor surfaces

Non-Toxic and Environmentally Friendly Options

If you prefer non-toxic and environmentally friendly options, there are several choices available. Water-based acrylic sealers and penetrating sealers made from natural oils or plant-based materials are good options.

  • Water-based acrylic sealers: These are low VOC (volatile organic compound) sealers that have a low odor and dry quickly. They are non-toxic and easy to apply, making them a popular choice for both indoor and outdoor surfaces.
  • Natural oil-based and plant-based penetrating sealers: These sealers are made from natural oils or plant-based materials, making them eco-friendly. They penetrate deep into the concrete surface and provide long-lasting protection against staining and moisture damage.

Non-toxic, low VOC, and eco-friendly options are not only safe for you and your family but also for the environment.

Health Risks of Using Toxic Concrete Sealers

While concrete sealers are designed to protect and enhance the appearance of concrete surfaces, some sealers can contain harmful chemicals that can pose serious health risks if not used correctly.

Toxic Chemicals Found in Concrete Sealers Potential Health Risks
Xylene Headaches, dizziness, nausea, and respiratory problems
Toluene Eye and skin irritation, headaches, and nausea
Acetone Irritation of the eyes, nose, and throat, and shortness of breath

Exposure to these toxic chemicals can occur during the application process, as well as during the curing and drying stages. It is important to take proper safety precautions when working with concrete sealers to avoid these health risks.

Health Risks for Pregnant Women and Children

Pregnant women and young children are particularly vulnerable to the health risks associated with toxic concrete sealers. Exposure to these chemicals during pregnancy can increase the risk of miscarriage, birth defects, and developmental delays. Children who are exposed to these chemicals can experience similar health problems, as well as learning disabilities.

It is important to choose non-toxic concrete sealers and take proper safety precautions to protect yourself and your family from these health risks.

Safe Concrete Sealer Options: Choosing Low VOC and Water-Based Sealers

If you’re concerned about the potential health risks of using toxic concrete sealers, there are safe alternatives that you can choose from. By selecting low VOC and water-based sealers, you can protect yourself and the environment from harmful chemicals.

Sealer Type Description
Low VOC Sealers Low VOC sealers contain fewer volatile organic compounds that can contribute to air pollution and respiratory problems. These can be water or solvent-based and are available in a range of sheens.
Water-Based Sealers Water-based sealers are the safest option, as they contain no solvents or VOCs. They are easy to apply, dry quickly, and provide a natural-looking finish.
Penetrating Sealers Penetrating sealers are also a safe option, as they do not form a film on the surface of the concrete. Instead, they penetrate into the pores of the concrete, filling them with a protective barrier against staining and water damage.

When selecting a concrete sealer, look for products that are labeled as “low VOC” or “water-based.” These products typically contain less than 100 grams of VOCs per liter, making them safe for indoor and outdoor use.

It’s important to note that even low VOC and water-based sealers can still pose some health risks if not used properly. It is recommended to wear protective gear such as gloves, goggles, and a respirator when applying any type of sealer.

Additionally, make sure to follow the manufacturer’s instructions for application and disposal of the product to minimize any potential risks to yourself and the environment.

Exploring Natural and Environmentally Friendly Concrete Sealers

For those who are concerned about the harmful effects of conventional concrete sealers, there are natural and environmentally friendly options available. These sealers are made from natural ingredients and are free from toxic chemicals, making them a safer and more sustainable choice.

Type Composition
Beeswax Derived from bees, this sealer offers protection without compromising air quality. It is water-resistant and enhances the natural color of the concrete.
Lime Made from limestone and other natural materials, this sealer is ideal for outdoor use. It provides a breathable barrier that allows moisture to escape, preventing damage to the concrete underneath.

In addition to these natural options, there are also environmentally friendly concrete sealers that are low in volatile organic compounds (VOCs) and are water-based. These sealers are still synthetic, but they are safer for you and the environment.

  • Low VOC Concrete Sealers: These sealers contain minimal amounts of VOCs, making them safe to use indoors and outdoors. They come in a range of finishes, from matte to high gloss, and provide excellent protection against water, stains, and UV rays.
  • Water-Based Concrete Sealers: These sealers are made from acrylic or epoxy resins and are mixed with water before application. They are easy to apply, have low odor, and dry quickly. They are also ideal for use on polished concrete floors.


Whether you choose a natural or an environmentally friendly concrete sealer, you can be assured that your concrete surface will be protected without compromising your health or the environment. Take the time to research different options and choose the one that will best suit your needs and priorities.

Safety Tips for Using Concrete Sealers

Concrete sealers are an essential part of maintaining and protecting your concrete surfaces, but it’s important to ensure that you’re using them safely. Here are some safety tips to keep in mind:

  • Always wear protective clothing, including gloves, long sleeves, and pants.
  • Work in a well-ventilated area to minimize exposure to fumes.
  • Do not use sealers in enclosed areas without proper ventilation.
  • If you’re using a spray-on sealer, use a respirator mask to avoid inhaling the fumes.
  • Read the manufacturer’s instructions carefully and follow them closely.
  • Dispose of any leftover sealer and containers according to local regulations.

By following these safety tips, you can ensure that you protect yourself and others while still achieving the benefits of using concrete sealers.


Using concrete sealer can be a great way to protect your concrete surfaces, but it’s important to use the right product to avoid health risks associated with toxic products. By understanding the types and compositions of concrete sealers, you can make an informed decision about which one to use.

Low VOC and water-based sealers are excellent alternatives to toxic sealers and provide a safer option for your family and the environment. Natural and environmentally friendly concrete sealers are also available and are a great way to minimize your carbon footprint.

Remember to always prioritize safety when using concrete sealers. Follow manufacturer instructions, ensure proper ventilation, and wear protective gear such as gloves and a respirator. By taking these simple precautions, you can enjoy both the protection and beauty of sealed concrete surfaces without any harmful effects.


Q: Is concrete sealer toxic?

A: No, not all concrete sealers are toxic. There are non-toxic and eco-friendly options available.

Q: What are the different types and compositions of concrete sealers?

A: Concrete sealers can be categorized into various types based on their composition, including low VOC and water-based options.

Q: What are the health risks associated with using toxic concrete sealers?

A: Using toxic concrete sealers can pose health risks, such as respiratory issues and skin irritations, due to the harmful chemicals they contain.

Q: Are there safe concrete sealer options available?

A: Yes, you can choose low VOC and water-based sealers, which are considered safer alternatives to toxic sealers.

Q: Are there natural and environmentally friendly concrete sealers?

A: Yes, there are natural and environmentally friendly options available for those who prioritize eco-conscious choices.

Q: What are some safety tips for using concrete sealers?

A: It is important to wear protective gear, work in a well-ventilated area, and follow the manufacturer’s instructions when using concrete sealers.

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