Crawl Space Insulation

Crawl Space Insulation Rebates 75-100% off costs.

Get crawl space insulation with Home Comfort Practice and see if you qualify for 75%-100% cost recovery through Energize Connecticut's rebates.

In Connecticut, insulating your crawl space is essential for preventing moisture-related issues and improving your home’s overall energy efficiency. For expert advice and professional crawl space insulation services in Connecticut, contact Home Comfort Practice. Let us help you create a healthier, more energy-efficient home with the right crawl space insulation solutions.

Introduction to Crawl Space Insulation

Insulating your crawl space is a crucial step towards improving your Connecticut home’s energy efficiency, indoor air quality, and comfort. Proper crawl space insulation can prevent moisture-related issues, reduce energy bills, and protect your home’s structural integrity.

Panorama Basement or crawl space with upper floor insulation and wooden support beams. An area of limited height under the floor of a house with concrete wall and floor.

Advantages of Insulating Crawl Spaces

Prevention of Moisture and Pests: Proper insulation and vapor barriers can significantly reduce the risk of moisture buildup and pest infestation, protecting your home from mold, mildew, and structural damage.

Improvements in Energy Efficiency: By insulating your crawl space, you minimize heat loss through the floor and foundation, leading to lower heating costs and improved overall energy efficiency in your Connecticut home.

Frequently Asked Questions about Crawl Space Insulation

In Connecticut, insulating unventilated crawl spaces is often the preferred approach, as it helps control moisture and improves energy efficiency. However, if your crawl space is ventilated, it’s crucial to use the right insulation materials and techniques to protect against moisture.

Ensure proper drainage around your home’s foundation, use a vapor barrier on the crawl space floor, and consider sealing off ventilation to the outside to prevent moist air from entering.

The best insulation type depends on whether your crawl space is ventilated and your specific home needs. Rigid foam board and spray foam are generally recommended for their moisture resistance and thermal properties.

crawlspace spray foam

While some homeowners may tackle this as a DIY project, professional installation ensures the best results, especially when dealing with moisture control and air sealing.

Typically, insulating the walls is preferred, especially for unventilated crawl spaces, as it helps maintain a dry and energy-efficient area.

A vapor barrier is a material placed on the crawl space floor to prevent moisture from rising into the space; it is highly recommended to pair this with proper insulation for effective moisture control.

For vented crawl spaces, ensuring proper ventilation and using moisture-resistant materials are key. You might consider using a less moisture-absorbent insulation like rigid foam or properly shielded fiberglass.

Yes, properly sealing and insulating crawl spaces can deter pests by removing their habitats and entry points into your home.

Sealing is often recommended to prevent moisture and air leaks, especially in humid climates, but some homes may require ventilation to address specific issues.

Crawl Space Insulation Materials

  • Spray Foam Crawl Space Insulation

    Spray Foam Crawl Space Insulation

    Ideal for both ventilated and unventilated crawl spaces, spray foam insulation offers excellent air sealing and moisture resistance, insulating the walls and making the space part of the home’s thermal envelope.

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  • Blown Cellulose Crawl Space Insulation

    Blown Cellulose Crawl Space Insulation

    While not as common for crawl spaces, loose-fill insulation can be used in certain situations, provided there is adequate protection against moisture and proper installation.

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  • Blanket/Batt Crawl Space Insulation

    Blanket/Batt Crawl Space Insulation

    Suitable for crawl spaces with proper moisture control, batt and roll insulation can be installed between floor joists but requires a vapor barrier to protect against moisture from the ground.
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  • Rigid/Foam Crawl Space Insulation

    Rigid/Foam Crawl Space Insulation

     A popular choice for crawl space walls, rigid foam board provides a high insulation value and moisture resistance, making it suitable for both ventilated and unventilated crawl spaces.
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Qualify for Crawl Space Insulation Rebates by Getting a Home Energy Audit


Service Cost (free-of-charge if eligible*)


Average Annual Energy Savings


Weatherization Service Value


Average 1st Year Savings

Rebates for Crawl Space Insulation


Energize CT Rebate: $1.70 per Square Foot
Avg. Initial Cost $1500-$10000
Max Rebate N/A
Avg. Lifetime Savings $4000

Claim up to $1.70 per square foot on approved insulation projects recommended during a Home Energy Solutions assessment.This may cover between 75-100% of insulation costs!

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IRA Tax Credit: % of Costs
25C Max Credit $1600
25D Max Credit Uncapped

The Inflation Reduction Act tax credit for weatherization in Connecticut offers homeowners a 30% tax credit for eligible projects, with a maximum claim of $1,200 per year. It covers insulation, air sealing, doors, windows, and energy audits. Weatherization reduces energy waste, lowers bills, and improves home comfort while decreasing carbon emissions.

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IRA Electrification Rebate: $1600
Upfront Discount 50%-100% of Costs
Avg. Initial Cost N/A

Connecticut homeowners may be eligible to claim up to $1,600 for their weatherization project through the Inflation Reduction Act Electrification Rebate program, depending on their income. Low-income households can receive 100% coverage of weatherization costs, while moderate-income households can receive 50% coverage. (The total cap for Electrification Rebates across all qualified projects is $14,000.)

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Other Areas to Install Insulation


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