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Should Exposed Fiberglass Insulation Be Covered? (Explained)

Do you ever face any health issues with the exposed fiberglass insulation? You may hear of the diseases. Fiberglass insulation has some chemicals which are not safe for human health. They can create skin issues, allergies, and more complex conditions.

Apart from the health issues, fiberglass insulation has some legal issues too. In America, you cannot expose fiberglass insulation. You need to ensure security and maintain safety as well.

Should exposed fiberglass insulation be covered?

The exposed fiberglass insulation should be covered. It is not safe for human health and the environment. Besides, the exposed fiberglass insulation is unsafe for inhaling. It has some strong chemicals, namely silica sand, limestone, and soda ash. These are not safe for human and pet’s health.

It is not safe to be in a room with exposed insulation. It will damage health and create skin issues while staying in the exposed insulation room for a long time. It will also create respiratory problems that will be problematic as well.

Moreover, fiberglass insulation is made with glass and chemicals. It is used for controlling the temperature and making a house weather resistant. It retains the heat and slows down the heat and airflow.

Apart from these uses of fiberglass insulation, you need to consider other factors. 

Why is it not safe to leave fiberglass insulation exposed?

Health issues are the main reason it is not safe to leave fiberglass insulation exposed. We have counted more; let’s get to them.

Skin Problem:

The fiberglass insulation needs coverage; otherwise, the airflow and weather will disturb the fiberglass insulation. These barriers will separate some fiber particles from the fiberglass insulation.

When the human skin gets those particles, it will start irritating and itching. So, skin problems are the number one reason why it is not safe to leave fiberglass insulation exposed.

Breathing Problem:

If the fiberglass insulation is exposed, it will leave some glass particles in the air.

They are the tiny part, but they will go through the breath. When you inhale the glass fiber, it will damage the lungs and lead to severe respiratory or breathing problems.

In a nutshell, fiberglass insulation will create breathing problems. It will also damage the lungs and cause respiratory ailments.

Eye Issues:

It is recommended to wear goggles while going to the insulated elements.

If you are about to build your building and need to go to the site every day, you should wear the safety measurements. The fiberglass insulation will damage the eyes.

Fiberglass insulation spreads some tiny particles. If you look at the insulation with bare eyes, some particles may go to your eyes and damage your internal health.


If you swallow or inhale some tiny particles of the fiberglass insulation, you may face cough diseases.

Sometimes the fiberglass insulation is exposed and leaves particles in the air. If the particles or glass go to your throat, they will make it dry.

When you start living near the fiberglass insulation, you will lose the sound health of your nose. You may face nose bleeding as well.

What happens if you breathe in fiberglass insulation?

If you breathe in fiberglass insulation, it will create breathing issues. In addition, it will cause lung diseases. What is the reason behind these health issues?

Basically, fiberglass insulation is not safe until it is appropriately installed and covered with some plastic or other safe materials. The fiberglass insulation spreads out some glass particles through the air when it is exposed.

So when you breathe in fiberglass insulation, you will inhale those particles. They will go to your lungs and damage the respiratory ailments. It will also damage the throat and create a cough.

What does fiberglass insulation do to your skin?

Fiberglass insulation will irritate your skin by the tiny glass particles. When you pass the fiberglass insulation, you might get some particles on your skin. These glass particles or fiber particles will contact your skin and start irritating.

Furthermore, your skin will itch and force you to damage the skin by itching. The glass particles, or the tiny glass part, may go through the skin and damage internal health issues.

You will face skin inflammation if you live or work under fiberglass insulation. It is the worst damage to the skin that may not recover soon. It will be better to cover the entire face and skin and the work under the fiberglass insulation.

Can exposed insulation cause a fire?

The exposed insulation can cause a fire. Most of the insulation contains chemicals, and the chemicals in the insulation are not safe for fire. If they contact the fire, they will burn and increase the flame.

You will not find any single insulation which is chemical-free and cannot cause a fire. The same goes for the fiberglass exposed insulation. It also has chemicals and other unsafe ingredients. These elements will cause a fire indeed.

Besides causing the fire, exposed fiberglass insulation will also spread skin and respiratory diseases. These are the severe drawbacks of having the exposed insulation open. You must secure it by covering it.

What can I cover fiberglass insulation with?

You can cover the fiberglass insulation with different materials. One of the most popular ones is the poly membrane or polythene sheet. It is a plastic cover that will protect the insulation from external threats and damages.

Another good thing to cover the fiberglass insulation is Polywood SPC flooring. It’s an environmentally friendly covering that is waterproof. You can re-use it for further uses.

The plywood flooring will protect the exposed fiberglass insulation and secure it for living animals. If you build your buildings in an indoor environment, you must cover the exposed fiberglass insulation.

How to cover exposed fiberglass insulation?

You should cover the exposed fiberglass insulation. To do it, you can follow our tips and cover the building adequately.

Hire an Expert:

It will be best to hire a professional to help you cover the exposed insulation. Every country and region has some code and conduct that must be ensured while covering the exposed fiberglass insulation.

Some countries only ask you to cover the insulation with poly membrane; others may have code to cover the entire building with three different layers. There are more conditions that you have to follow as well.

Buy the covering:

Different covering materials are there. You will buy them. But the Polywood flooring is the best in every way. It ensures the best security and won’t allow the exposed insulation to spread particles.

Moreover, the Polywood flooring will help you stop the growth of different insects and other building bugs. They will not get any direct sunlight or other facilities to grow.

Cover the exposed insulation:

Now, you should cover the exposed insulation with the help of a professional. He/she will help you to maintain the codes. However, you will cover the building by yourself. But it won’t be easy.

You have to ask for help from the laborers and direct them to cover the building’s open area first. You will cover every side of the building one after another.

To make it easier, you should make the perfect height and weight of the building and then buy the required coverage.

Put some extra covering:

When you cover the entire exposed insulation with the plywood flooring, you can put some additional layers on it. It will be better to buy the poly membrane covering materials. It will make the insulation more secure and safe.

Before buying it, ask your hired professional to let you know about the codes. There might be any suggested covering material in your locality.

So, these are the steps and best ways to cover the exposed fiberglass insulation. It will also help you maintain the law of your locality and ensure safety. Here, maintaining the law and code is crucial.

What type of insulation can be left exposed?

Insulation that doesn’t require any thermal barrier can be left exposed. If you search for such insulation, you will get DuPont Thermax. It is high-efficiency insulation that can be applied safely. It will not spread any particles in the air.

Another type of insulation is unfaced fiberglass insulation. You can leave it exposed, and it will not require any coverage either. It is safe and won’t create any health issues if exposed.

You should buy anyone from the above two when you buy free exposed insulation. Both are fine, but the unfaced fiberglass insulation is the safest one.

You can also use both and give the exposed insulation different layers to make it more secure. That will be the ultimate protection against the exposed insulation.

Final thoughts

Exposed fiberglass insulation can spread out some glass particles and fiber parts. These all are unsafe for both human and animal health. They will create skin irritation breathing problems. For all these reasons, you should cover the exposed fiberglass insulation. You can use Polywood flooring.