Live Comfortably for Less with Crawl Space Insulation

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Why Choose Foam Engineers for Crawl Space Insulation

What variables impact the climate of your home can be very difficult to decipher. We at Foam Engineers accurately assess the problems that your house has and be able to fix them – like addressing crawl space insulation needs. Few in our market can make that claim, and we take great pride in our work as trusted insulation contractors in the metro St. Louis area.

Many features play into our discovery of the problems of your house, including airflow mechanics, current insulation, architectural fixtures, window placement, and many other factors that are often not considered or even thought of when homeowners deal with insulation for their crawl spaces in their homes. . 

You need an expert insulation contractor, not just an installer, and that’s where we come in. We can use every tool available that we have to tackle your home’s problems. We use many different techniques than those commonly available on the market from commercialized companies. The techniques are based around you, the customer, rather than around money, resulting in a lower cost, a better house, and easier peace of mind.

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Pick a Local Crawl Space Insulation Company

We take huge pride in the fact that we are a local company, and while we may not be as big as the commercialized companies, we are certainly much better. We put our customers first, and unlike big commercial companies, we care about how your house actually does, how your energy bills are affected, and how you, the customer, feel about your home. 

Big franchises often put money over customer satisfaction and some install products that do not work as well because the profit margins are better. With our product guarantees, however, you won’t have to worry about products failing or falling apart long before their expected date, and you can always expect top-tier customer service and friendly workers. 

Unlike our competitors, we don’t go for high margins. Instead, we’d rather do a job that enables you to enjoy your home. Our company is also part of the Second Mile Service suite of companies that operate out of St. Louis, ensuring that you get the best service in the area. We have over 40 years of experience, so we can answer any question you may have to throw at us, and can work with you to find a solution for your house that works best for you (the homeowner), the house, and your wallet. 

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Why Do I Need Crawl Space Insulation?

At its core, installing crawl space heavy mill vapor liners, when properly installed with foam insulation at the perimeter and sealed rim joists, makes a home much more comfortable to live in. THE ADDED BENEFITS ARE  easier to cool the house in the summer ( less humidity) and also makes it easier to warm the house, which cuts back on energy bills. And it adds a white, clean, look to the crawl space making re-sale much more likely.  The re-sale aspect is  actually more  important than most folks realize.  Properly Insulated and sealed crawl spaces also work to reduce insect and mice, spider, intrusion into the home , as all fiberglass is removed where they nest and populate.  

We don’t just treat the symptoms of a thermally compromised  house due to insulation problems – we help to fix them. Instead of covering up the problem, like using dehumidifiers to eliminate condensation in your crawl space, we focus on finding the source of the problem and properly insulating the crawl space to prevent the issue from occurring again. .

In addition, your crawl space contributes to about 50% of the air on the first floor of your home, so having a properly insulated and sealed crawl space to act as a barrier to outside forces is extremely important. Reduces musty smells in all cases.    

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Crawl Space Insulation Lowers Energy Bills

Having a properly insulated crawl space and home reduces the heat load on your home’s furnace, enabling it to run less with warmer floors and living space over the crawl space,  therefore reducing your energy bills. 

This is especially vital in the middle of winter, as most homeowners experience a dramatic increase in their energy bills during cold weather, not to mention the discomfort such extreme cold temperatures can (and will) cause. 

In the summer, humidity is higher in the home due to humidity from the crawl space . Just a matter of physics. High vapor pressure seeks to equalize with low vapor pressure.  

Maintenance Costs Less with Crawl Space Insulation

Just as it sounds, maintenance costs less with crawl space insulation. The main reason is that you’re not running your furnace constantly, causing the unit to last longer. You also have less condensation due to temperature differences between sections of your home and its crawlspace. This is important because it means less water and potential mold damage, which can severely damage the house and can lead to structural problems and a large cost of repair .

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Crawl Space Insulation Helps Improve Air Quality

Unknown to many homeowners, crawl space insulation greatly improves air quality. As mentioned before, 50% of the air on the first floor of homes with crawl spaces comes from the crawl space, which is a huge deal. 

Having a well-insulated, sealed and semi-conditioned crawl space reduces the draw of air into your home from the outdoors through the Stack Effect, sometimes referred to as chimney effect.

Insulating the crawl space and vapor liner installs are important if you or a family member have health problems, including autoimmune diseases, asthma, allergies, or problems with the lungs. It often goes unnoticed as well, so if someone in your house has a health issue, insulating your crawl space may help relieve the symptoms and make it easier to breathe. 

Crawl Space Insulation Helps Control Moisture

Temperature differences between zones and sections of the house can create condensation, which is always a concern to homeowners. The reason for this is that condensation can lead to structural damage and mold, which can be  two of the biggest problems with crawl spaces not retrofitted. 

Condensation also invites pests that like to live in damp areas and helps create a breeding ground for them as it maintains high humidity in the insulation fiber you probably have in the floor joist. . This makes it difficult to sell a house (if that’s what you’re looking into), or renting out, and can cause problems in the future as continued high moisture over time  escalates issues. 

Another problem that many people don’t realize is that crawl spaces that aren’t properly insulated can result in a very musty smell inside the house, which can smell stale and unpleasant. As such, it’s extremely important to be able to control moisture in the crawl space area.  

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Types of Insulation

We have several types of insulation available. 

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This type of insulation comes in two forms. The first comes in blown insulation, which is an insulation of 100% boride formula. The advantages to the blown type of fiberglass installation is that it has extremely high fire resistance, and has a very high ratio of density to R-value, resulting in comfort and slashed energy costs. It offers high sound control because of the quality of the fiberglass, and it is pest control effective, meaning it does not encourage or support insect or mice. In addition, Boride is a mineral, not a chemical, so it isn’t nearly as dangerous and doesn’t degrade easily, so it’s long lasting. 

The other type of fiberglass insulation is batt insulation, sometimes made with rock wool, which isn’t nearly as common. This is because it’s not often manufactured and it’s precut into standard sizes. However, it does very well for preventing insects and pests from making their home in your walls and crawl space, as well as ensuring a soundproof home.  


This type of insulation is one of the three most popular insulations in the world, often used in ceilings. It’s a very good type of insulation and can sometimes be compared to fiberglass insulation in terms of quality and durability. It’s also a tried and true insulation – it’s been around since the 1950s. It’s made from recycled newsprint and denim, making it very eco-friendly, and it’s biodegradable, making it ideal for homeowners looking to reduce their economic footprint while lowering the emissions their house produces. It also has a very high R-value like fiberglass, which means more savings for your energy bill.

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Rigid Foam Board

This insulation is often used for floors and ceilings and unvented roofs. It can sometimes be used in crawl spaces, depending on the circumstances and the size of the crawl space.  It has a high insulating value for relatively little thickness, which often makes it a go-to for you if you don’t have a lot of space to put insulation down. It also blocks thermal short circuits when installed over joint frames or joists, which is also very important.

Spray Foam

Spray foam insulation is applied in small containers or larger quantities. It’s great for adding insulation if you already have insulation that you’re pretty happy with that needs touching up or there are areas that have deteriorated, or if you just have a very small area that you want to insulate. It’s also good for irregularly shaped areas and for going around obstructions. If you’re trying to insulate your attic and you have a bunch of stuff up there, this might be your option for trying to insulate without having to move all the furniture and Christmas decorations and luggage back down to the base floors.

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The final type of insulation that we have is a brand new insulation called Tap insulation. We’re very excited to offer this product to customers. It’s brand new, and it’s encapsulated. It shares many similarities with blown fiberglass insulation and is very good for moisture-rich crawl spaces, making it the best product we offer for insulating crawl spaces. It’s white, which can make it look nice if it’s in a space that can be visible, and the product itself is formaldehyde free, helping ensure your safety. It’s lightweight, and is bonded with a bio-based binder, making it also environmentally friendly, as well as the fact that it’s made with mostly renewable plant products, enabling it to be recycled.

It is very thermally efficient. It’s effective in a heat resist transfer with R-values up to R-30, and because it’s formaldehyde free, it will not put off formaldehyde gas in an indoor environment, which is very important if you have people who already have compromised health. It offers good sound control, especially through floors, walls and ceilings. If you have a noisy home and have lots of kids, or you just even just want your office to be quiet for taking business calls, this is a good option for you.

Contact Foam Engineers Today

Foam Engineers tries and puts your house first. We can do energy assessments do detective work to find out what exactly in your house is causing your energy bills to go up and how we can fix it. We can also do thermal imaging if you have cold spots that are always in your house but you can’t figure out why they’re cold. We also specialize in air sealing and animal damage restoration, which is another big thing that we can help with. 

We can also offer insulation removal and replacement, which many other companies don’t. Removing insulation that is made with cheap common materials can be very dangerous to the human body. We offer also offer a radiant barrier, which is a layer of special foil placed between the insulation and the airspace to brought to block radiated heat transfer between a heat-radiating surface,s such as a hot roof or new walls in an attic, and heat-absorbing surfaces, such as insulation bats and an attic. It’s also very good when you’re working with water heaters and areas that get hot so it makes your bonus room feel more comfortable. It has a Class A fire rating as well, making it non-flammable. 

And if you’re not satisfied with any of our products, we’re happy to talk to you about it! 

We’d love to see how we can make your home more comfortable, so call today for an estimate!

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