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The Top 5 Benefits of Crawl Space Insulation

rigid insulation panels installed in crawl space

No matter how easy home improvement shows make it look, insulation – particularly in your crawl space – can be tricky to handle. 

Crawl space insulation might seem like a minor detail, but it is actually a crucial component of a home’s overall insulation system. It forms a barrier that keeps the harsh external weather from affecting your indoor environment, particularly the ground floor. This translates to maintaining a more consistent indoor temperature, preventing moisture issues, and even reducing your heating and cooling costs. 

At Baker’s Waterproofing, our mission is to ensure that every home in Pennsylvania is adequately equipped to handle our unique climate conditions. This guide will give you the knowledge you need to understand the importance of crawl space insulation, and why it should be a priority in your home maintenance plans. 

The Biggest Benefits of Crawl Space Insulation

It’s often easy to overlook the crawl space when thinking about insulation, but its importance cannot be overstated. Here’s why crawl space insulation is essential: 

utility meters

1. Reduction in Energy Costs

A well-insulated crawl space can prevent heat loss in the winter and cool air loss in the summer. This means your heating and cooling systems won’t have to work as hard to maintain a comfortable temperature in your home, leading to significant savings on your energy bills

dehumidifier in encapsulated crawl space

2. Improved Indoor Air Quality

Because of the stack effect, the air in your crawl space makes its way into your living space, carrying with it any mold, mildew, or pest allergens that might be present in an uninsulated space. Proper crawl space insulation can improve your home’s overall air quality, contributing to a healthier living environment. 

Wet and musty crawl space

An uninsulated crawl space can allow moisture from the ground to seep into your home. This can lead to a damp, musty smell, and in the worst cases, can cause mold growth and structural damage. Insulation creates a barrier that prevents this moisture intrusion. 

pest on crawl space floor

4. Protection Against Pests

Moist and uninsulated crawl spaces can be inviting to various pests like bugs and rodents. By insulating and encapsulating your crawl space, you create an environment that’s less appealing to pests. 

mom dad kids grandparents reading book

5. Overall Home Comfort

With crawl space insulation, you’ll notice more consistent temperatures throughout your home. No more cold floors in the winter or warm rooms in the summer. 

Types of Crawl Space Insulation

There are several types of insulation commonly used in crawl spaces. Each type has its own benefits and potential drawbacks. 

1. Blanket Insulation (Batts and Rolls)

Damp crawl space fiberglass insulation
  • Pros: Easy to install and relatively inexpensive. 
  • Cons: It is typically less effective than other types, allowing for heat loss and moisture penetration. It is not recommended for crawl spaces with moisture problems – it traps moisture, grows mold, and attracts pests. 

2. Loose-Fill Insulation

crawl space insulation
  • Pros: It can fit into small or irregular spaces, making it an excellent choice for insulating around obstructions. It is also easy to install with a machine. 
  • Cons: It can settle over time, reducing its effectiveness. 

3. Rigid Foam Insulation

Foam insulation panels
  • Pros: Highly effective at preventing heat transfer and can also act as a moisture barrier. It doesn’t sag or settle over time, providing long-lasting performance. 
  • Cons: It can be more expensive than other types of insulation and usually requires professional installation. 

When trying to decide the right type of insulation for your crawl space, consider factors such as your home’s existing insulation, our humid and wet climate, and the humidity level in your crawl space. For most homes in Pennsylvania, we at Baker’s Waterproofing recommend and install rigid foam insulation due to its high effectiveness in both thermal insulation and moisture prevention.  

How to Properly Insulate a Crawl Space

Proper crawl space insulation involves more than just choosing the right insulation material and installing it. Here’s a step-by-step guide on how to effectively insulate your crawl space: 

Step 1: Cleaning the Crawl Space

Before you start the insulation process, make sure the crawl space is clean and free of any debris, old insulation materials, and pests. If there are signs of mold or rot, it’s essential to address these issues before proceeding with insulation. 

Step 2: Waterproofing the Crawl Space

Before installing insulation, it’s important to seal any cracks or gaps in the foundation or walls of the crawl space. Waterproofing measures – an interior drain and a sump pump – may be needed to prevent moisture intrusion from the ground. 

Step 3: Installing the Insulation

Next is the actual insulation installation. At Baker’s Waterproofing, we use ExTremeBloc™ insulation panels and mechanically fasten or adhere them to the interior crawl space walls. We are careful to leave an “inspector’s gap” to allow for easy inspections from pest control companies. 

We also cut these panels to fit vent openings and do so before placing the full-size panels on the walls. This ensures an airtight fit to seal your crawl space and make it more difficult for outside air, water, and pests to get into your crawl space. 

Step 4: Encapsulation and Dehumidification

Waterproofing measures and insulation alone are not a complete solution. They are just a few important pieces of the puzzle.  

For a comprehensive solution, we’ll also encapsulate the crawl space using a 20-mill vapor barrier to cover the walls, floor, and support blocks. This fully isolates the crawl space from the elements. We also add an energy-efficient dehumidifier to control moisture and humidity, clean and filter the air, reduce odors, and stop mold growth. 

The Benefits of Professional Crawl Space Insulation from Baker’s

While the steps may seem straightforward, crawl space insulation can be a complicated task. Given the importance of correct installation, it’s important to enlist professional help. This is where Baker’s Waterproofing comes in. Here’s why working with us is a great choice: 

technician installing crawl space insulation
  • Expertise and Experience: With years of experience in waterproofing and insulating homes in Pennsylvania, our team has the skills and know-how to effectively insulate your crawl space. We understand the unique challenges of our local climate and how to address them. 
  • Quality Materials: We only use high-quality insulation materials that are proven to be effective and long-lasting. 
  • Detailed Inspections and Estimates: Before we start any insulation project, we conduct a thorough inspection of your crawl space to understand its specific needs. We then provide a detailed estimate that outlines the work needed and the associated costs. 
  • Customer Service: At Baker’s Waterproofing, we prioritize customer satisfaction. From the initial inspection to the completion of the project, we keep you informed and ensure you’re happy with our work. 

Whether you need to insulate your crawl space, upgrade existing insulation, or deal with moisture issues, Baker’s Waterproofing is here to help. We take pride in our ability to improve the comfort, energy efficiency, and overall health of your home. Don’t hesitate to reach out to us for your crawl space insulation needs. 

Crawl Space Insulation FAQs

The best insulation for a crawl space depends on various factors, including your home’s specific needs and local climate. Fiberglass is widely used in homes, but it has no place in a crawl space because of its ease of growing mold and harboring pests. However, rigid foam insulation is recommended due to its high effectiveness in preventing heat transfer and acting as a moisture barrier. 

The cost to insulate a crawl space can vary widely depending on the size of the space, the type of insulation used, and whether you hire a professional. It’s best to get a professional inspection and estimate to understand the potential costs. 

Signs of poor or failing crawl space insulation include cold floors above the crawl space, unusually high energy bills, a musty smell in the home, and visible moisture or mold in the crawl space. 

Contact Baker’s Waterproofing for Reliable Crawl Space Insulation

If you’re ready to reap the benefits of a well-insulated crawl space, Baker’s Waterproofing is here to help. Our team of experienced professionals is ready to provide you with quality, efficient, and reliable crawl space insulation services. 

At Baker’s Waterproofing, we care about your comfort and satisfaction. Don’t let your crawl space be the cold, damp, and energy-wasting space it doesn’t have to be. Contact us today to schedule a free inspection and estimate, and let us help you turn your crawl space into an efficient and beneficial part of your home. 

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Shamokin Dam, PA  17876


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Harrisburg, PA 17102


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Hermitage, PA 16148


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