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Crawl Space Insulation

Discover how Groundworks' crawlspace insulation solutions can enhance your home's energy efficiency and comfort.

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Groundworks tech working in crawl space fixing insulation
Groundworks man filling in gap in crawl space with insulation

Cold floors, drafts, and high energy bills during Canadian winters might indicate moisture issues in your home’s crawl space. While you might be used to wearing extra layers or setting aside money for high heating costs, Groundworks’ crawl space insulation solutions might eliminate these necessities.

Insulating your crawl space is key to maintaining a healthy, cozy living environment. It helps prevent moisture-related problems, including mold and mildew growth, and enhances your home’s energy efficiency.

Groundworks provides a reliable solution for crawl space issues: AquaStop™ ExTremeBloc™ Insulation. We specialize in crawl space encapsulation, proactively addressing potential future problems and resolving current ones. We also offer a free custom quote. Call us today to get yours!

What is Crawl Space Insulation?

Insulating your crawl space involves applying foam materials beneath your house to add insulation. This is a crucial step in maintaining your home’s indoor air quality and energy efficiency. A properly insulated crawl space serves as a barrier against heat loss, saves energy, reduces your heating costs, limits mold growth, and discourages pests.

However, not all home insulation solutions are effective in addressing these issues. ExTremeBloc™ Groundworks is specifically designed to withstand the moist conditions found under many homes. When you combine ExTremeBloc™ insulation with professional crawl space sealing (which protects the space from outside air and adjacent strata), you benefit from stabilized humidity, improved air quality, and reduced energy costs year-round.

Regular crawl space repair and maintenance are vital for preserving your home’s structural integrity and comfort. It’s a critical aspect of home health that is often neglected.

Signs You Need Crawl Space Insulation

If you’re uncertain whether your crawl space requires insulation or encapsulation, consider the following common crawl space issues that can be addressed with the installation of ExTremeBloc™:

A crawl space with the insulation tearing apart and falling down

Ignoring these moisture-related issues in the crawl space and under the house can lead to more serious problems.

Is Crawl Space Insulation Necessary?

Yes, crawl space insulation is essential to maintain your home’s good condition and longevity.

Neglecting to install or maintain insulation can increase moisture and humidity, creating a perfect environment for mold growth. Any gaps or damage in the insulation can invite rodents and other pests.

Groundworks emphasizes early intervention as part of a comprehensive home stability and safety solution. We specialize in structural improvements to enhance your comfort and extend your home’s lifespan.

Crawl spaces pose risks beyond just bugs and spiders, so DIY inspections or insulation installations are not recommended. “Big box” solutions often address only visible symptoms and not the underlying issues related to crawl space moisture. Hence, it’s best to trust a Groundworks foundation expert to inspect your house professionally and thoroughly.

What Are the Different Kinds of Crawl Space Insulation?

At Groundwork, we typically use ExtremeBloc™ for crawl space insulation, although this isn’t the only type of insulation you may see in your home.

A crawl space insulation breaking down through support beams

Fiberglass Insulation

Although fiberglass is common in homes across the country, it’s not the best fit for crawl spaces. It’s generally placed between floor joists. However, the material is vulnerable to mold and moisture and may make an attractive nest for pests.

Spray Foam Insulation

Spray foam is applied to joists and walls, although it’s not a great choice for crawl spaces.

Even if you opt for closed-cell spray foam insulation, it may still be vulnerable to mold and termite damage in damp areas. You may also notice a persistent chemical odor from the insulation.

a groundworks tech filling gaps with new insulation

Foam Board Insulation

For the most reliable, highest-quality crawl space insulation, opt for foam board insulation like ExTremeBloc™. This type of insulation consists of cut-to-fit panels installed on the crawl space’s interior walls.

Although it’s a thinner material than fiberglass insulation, ExTremeBloc™ offers excellent insulation value, including reflective surfaces to improve heat retention.

What Are the Benefits of Crawl Space Insulation?

There are several advantages to professional crawl space insulation, including:

  • Moisture Control: Stop ground moisture from seeping into your home. This cuts down on mold formation and related problems, and safeguards against pest invasions.
  • Enhanced Energy Efficiency and Cost Savings: Effective insulation throughout the house, including the crawl space, prevents the inside air from escaping or outside air from entering. This gives you greater control over the interior temperature, saving you money on heating and cooling expenses. It also reduces the strain on your HVAC system.
  • Improved Indoor Comfort: Custom-fit insulation panels help maintain a steady temperature in the house, improve air quality, and make your home more comfortable.

At Groundworks, we offer expert services, high-quality products, and tailored solutions. We use industry-leading products, the best tools, and continuous professional training to deliver exceptional benefits to your home.

How We Install Crawl Space Insulation

Groundworks offers a comprehensive crawl space insulation and encapsulation process. This step-by-step procedure is designed to yield impressive results:

  • Conduct a thorough inspection of the crawl space and identify any repair needs
  • Replace access doors (if necessary) and seal open vents
  • Install a sump pump and provide crawl space drainage
  • Lay drainage matting on the dirt floor
  • Attach custom-cut ExTremeBloc™ insulation panels to the walls (leaving a gap for pest inspection)
  • Encapsulate the crawl space with a vapor barrier
  • Install a dehumidifier in the crawl space

Our process is efficient, thorough, and minimally invasive from start to finish. We treat your home as if it were our own. To maintain a mold- and pest-free crawl space, consider enrolling in Groundworks’ annual preventative maintenance and service package. Each year, we’ll check the encapsulation to ensure it’s in good repair and functioning properly.

Why Our Crawl Space Insulation is the Best Choice for Your Home

Groundworks’ ExTremeBloc™ foam board insulation is an excellent choice due to the following reasons:

  • The panels are lightweight and durable.
  • It’s made from environmentally friendly materials.
  • A radiant heat barrier coating is applied.
  • It possesses a Class A fire rating.
  • An integrated termiticide provides excellent pest deterrence.
  • It boasts a high R-value for thermal resistance.
  • The panels naturally resist moisture.

We’re ready to answer any further questions you have about this advanced technology and our installation procedures.

Contact Groundworks for Crawl Space Insulation Today!

Ground Works man inspecting the outside of a home.

At Groundworks, we recognize the crucial role of proper crawl space insulation and encapsulation in maintaining both the structural integrity and interior comfort of your home. Our team operates in cities all across Canada and possesses the knowledge and proficiency to tackle any crawl space insulation task, no matter the complexity.

We design our solutions to cater to your home’s specific needs and accommodate your budget. Every job is backed by our quality guarantee. We also offer free inspections and estimates. Don’t hesitate—contact us today to arrange yours!


If insulation isn’t adequately sealed against moisture, it may need replacing sooner than the typical 15-20-year lifespan. Groundworks, however, uses ExTremeBloc™ foam board insulation for crawl space installations, which is designed to be a permanent solution, and we ensure it is properly sealed against moisture intrusion.

R-value is a measure of thermal resistance for materials, including crawl space insulation. The higher the R-value, the more effective the material is at retaining heat.

We provide a customized cost estimate based on the specific needs and size of your home. We aim to work within your budget to find solutions that meet your requirements. Keep in mind, each home is unique, thus costs will vary accordingly.