Federal Support for Home Weatherization and Energy Upgrades
Thanks to recent federal initiatives like the Inflation Reduction Act (IRA), homeowners have more support than ever to improve their home’s energy efficiency – especially low-income households eligible for programs like LIHEAP (Low Income Home Energy Assistance Program). LIHEAP traditionally helps families pay heating and cooling bills, but it can also cover weatherization upgrades and energy-related minor repairs to lower those bills. In fact, the Biden-Harris Administration announced $4.5 billion for LIHEAP in winter 2022 to help with heating costs and efficiency improvements, alongside $8.5 billion from the IRA dedicated to home energy upgrades like better insulation and HVAC retrofits. These investments recognize that reducing a home’s energy waste directly cuts utility expenses.
Why focus on weatherization? Because heating and cooling account for roughly half of a home’s energy use. Any improvements to insulation, air sealing, and moisture control can make a noticeable dent in energy bills. According to the Department of Energy’s Weatherization Assistance Program, households save around $372 per year on average after weatherization improvements. That’s real money back in your pocket each year, plus a more comfortable and healthy home.
One often overlooked opportunity for weatherization is right beneath your feet – the crawl space. In this blog, we spotlight how crawl space encapsulation can boost your home’s energy efficiency and qualify as an upgrade under LIHEAP or similar programs. We’ll also introduce Americover’s recommended products – Pro Crawl Barrier, Pro Crawl Anti-Mold Vapor Barrier, and vapor barrier tape – which are ideal for this purpose and even meet federal project requirements.
Why Crawl Space Encapsulation Matters for Energy Efficiency
Crawl spaces are notorious for trapping moisture and allowing cold drafts in winter or humid air in summer to infiltrate your home. Crawl space encapsulation is the process of sealing the crawl space (typically by lining the ground and foundation walls with a heavy-duty plastic vapor barrier and sealing all seams). By doing so, you create a controlled environment under your house that protects your living space from the damp, unconditioned air below.
A properly sealed crawl space with a heavy-duty vapor barrier prevents ground moisture from entering the home, protecting against mold and heat loss.
Encapsulating a crawl space yields multiple benefits for both energy efficiency and home health. By keeping ground moisture from rising into the crawl area, you prevent mold growth, wood rot, and even pest infestations that thrive in damp conditions. A sealed crawl space also improves indoor air quality (since roughly 50% of the air on the first floor can flow up from below). Homeowners often notice lower humidity levels and more stable temperatures after encapsulation. In practical terms, your air conditioner won’t work as hard to remove humidity in summer, and your furnace can more effectively warm the floors in winter – saving energy and enhancing comfort.
In short, a well-encapsulated crawl space is a critical part of home weatherization. It complements insulation in your floors or walls by eliminating the dampness and drafts that would otherwise undermine those insulation gains. Given that programs like LIHEAP now support cost-effective weatherization measures, tackling the crawl space can be a smart, eligible project that yields immediate and long-term returns in energy savings. Not to mention, it protects your home’s structural integrity by keeping moisture and mold at bay.
Americover’s Crawl Space Solutions for LIHEAP Weatherization
To successfully encapsulate a crawl space, you need the right materials: a durable vapor barrier for the ground (and optionally walls), plus specialized tape to seal overlaps and edges. Americover has developed American-made, BABA-compliant products perfect for this job. Below are our top recommendations – these products provide the reliability and performance that homeowners and contractors alike can trust for federally funded weatherization projects.
- Pro Crawl Barrier: A 10-mil Class 1 vapor barrier with a high-gloss white finish, designed specifically for crawl space encapsulation. This heavy-duty liner offers low permeability and high tear resistance to block moisture vapor from the ground and protect your home’s structure. Encapsulating with Pro Crawl Barrier can improve energy efficiency and even reduce allergens by keeping out dampness and mold spores. Despite its toughness, it’s engineered to be lightweight and easy to install – the 10-mil thickness strikes the perfect balance, giving you excellent puncture resistance without excess bulk. For convenient installation, it comes in rolls of 10′ x 100′ (to cover large areas with minimal seams) and a new 5′ x 100′ size ideal for lining crawl space walls. (Fewer seams and cuts mean a quicker, more secure installation.) Pro Crawl Barrier exceeds ASTM E1745 Class A standards for vapor retarders, so you know it’s a high-performance material for moisture control.
- Pro Crawl Anti-Mold Vapor Barrier (MPT): This is a specialized version of the Pro Crawl barrier that includes Mold Prevention Technology (MPT™) for projects where mold and mildew are a primary concern. It shares the same robust 10-mil, Class A vapor retarder specifications, providing unmatched moisture protection for your crawl space, plus an extra line of defense: integrated anti-microbial additives that actively inhibit mold growth on the liner. The Pro Crawl Anti-Mold barrier passes ASTM G21 fungal resistance testing, meaning it will resist mold and mildew growth even in dark, damp crawl space conditions. It features a white top layer with a high gloss finish (to maintain brightness under the home) and a distinct pink underside – a visual indicator of the mold-resistant technology at work. This product is ideal if your crawl space has had past mold issues or if you live in a particularly humid climate. By installing the anti-mold liner, homeowners get lasting mold defense along with the energy efficiency benefits of encapsulation. (For contractors, it’s a great selling point to offer a solution that not only meets vapor barrier specs but also actively protects against fungal growth in the long run.)
- Vapor Barrier Tape: No crawl space encapsulation is complete without sealing the seams – that’s where a quality vapor barrier tape comes in. Americover’s white vapor tape is a heavy-duty, weather-resistant adhesive tape designed for seaming together overlapping sheets of your crawl space liner. Using the proper tape is absolutely critical: if the tape joint fails, gaps open up and the encapsulation’s integrity is compromised. Our vapor barrier tape creates a waterproof, airtight seal between panels, ensuring that the moisture barrier is continuous across the entire crawl space. The tape is formulated for excellent adhesion even in crawl space conditions (high humidity and dust), so it won’t peel off over time. (Tip: Professional installers often use a two-tape system – a 2-sided butyl tape to attach the plastic to walls, and a single-sided vapor tape to seal the overlaps. Be sure to apply tapes to a clean, dry surface for maximum stickiness.) By using Americover’s vapor tape along with the Pro Crawl Barrier liners, you can trust that your crawl space is thoroughly sealed against moisture and air leakage.
All of the above solutions are Made in the USA and even meet Build America, Buy America (BABA) compliance standards, which is important for projects using federal funds. Homeowners can take comfort in the fact that these materials are high-quality and code-compliant, while contractors can confidently use them for LIHEAP-funded weatherization jobs or any energy retrofit knowing they meet the necessary specifications.
Installation and Long-Term Benefits for Homeowners and Contractors
One of the advantages of Americover’s Pro Crawl system is how straightforward it is to install, whether you’re a seasoned contractor or a determined DIY homeowner. The materials have been designed with practical use in mind – for example, the bright white finish of the Pro Crawl liners improves visibility in the crawl space, making it easier to work during installation and to conduct future inspections for maintenance. The manageable roll sizes and lightweight-yet-durable construction mean that an encapsulation project can be completed efficiently, often in a day or a weekend, with minimal waste. (Contractors will appreciate spending less time cutting and patching together sheets, and homeowners will appreciate not having to call the crew back for fixes!)
From a homeowner’s perspective, the long-term benefits are substantial. After encapsulating a crawl space with a quality vapor barrier and tape, you’ll immediately notice a difference: rooms above the crawl space feel less drafty in winter and less muggy in summer. Your HVAC system doesn’t run as often to compensate for that “unknown” air coming from below, which can translate to lower energy bills month after month. By preventing moisture buildup, you’re also protecting your home from mold and wood damage – avoiding expensive repairs and preserving your home’s value. In essence, this one upgrade tackles energy efficiency, health, and structural durability all at once.
Contractors or weatherization professionals, on the other hand, can take pride in delivering a solution that truly helps their clients. Using Americover’s Pro Crawl Barrier (standard or Anti-Mold) with proper sealing tape means fewer call-backs and satisfied customers, since the products are engineered to last and hold up over time. And for those participating in government-funded programs, using an American-made, BABA-compliant product streamlines the compliance paperwork and supports domestic manufacturing – a win-win for business and community.
Finally, with funding available through LIHEAP and the IRA, many homeowners can get financial assistance or rebates for projects like crawl space encapsulation. It’s worth checking with your state’s LIHEAP or Weatherization Assistance Program office to see if you qualify for support. Improving your home’s efficiency has never been more accessible, and the payoff in comfort and savings will continue for years to come.
Bottom Line: Crawl space encapsulation is a smart weatherization upgrade that improves energy efficiency and home health. With Americover’s specialized crawl space vapor barriers and tapes, you have the tools to do the job right – ensuring a clean, dry, and efficient crawl space that keeps your family comfortable while lowering your energy costs. It’s an upgrade that homeowners and contractors can equally appreciate, especially with the boost from federal programs that make these improvements more affordable.
Sources: LIHEAP and IRA funding news; DOE WAP energy savings data; Energy.gov; Americover product specifications.
Want some simple tips on how to install a vapor barrier in your crawl space? Here is a video that talks about the steps.
We also sponsored this project with FIX IT Home Improvement to show you how to install a crawl space vapor barrier yourself using our Pro Crawl Barrier products.