Rim Joist Insulation
Seal one of the most overlooked areas of air leakage in your home with targeted insulation that blocks drafts, moisture, and energy waste at the source. If you’re noticing cold floors or basement drafts, or searching for rim joist insulation near me, this small upgrade can have a big impact.
Our 3-Step Process
Book a free assessment with a Terra Energy Advisor
We inspect your rim joists and surrounding areas to check for gaps, moisture, and insulation failure.
Get a customized insulation plan
Based on your home’s layout, we design a tailored upgrade plan, typically using spray foam or rigid board insulation for maximum sealing and durability.
Schedule your service and apply any eligible rebates
Our certified team completes the job quickly and professionally. We’ll also check if rim joist insulation qualifies for utility rebates in your area.
Smart Solutions
Smarter homes start here. From air-tight insulation to high-efficiency heat pumps and whole-home airflow, we upgrade comfort, slash energy bills, and help you cash in on rebates—cooler and cleaner living starts now.
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About This Service
Rim joists are a common weak spot in the building envelope, prone to air leakage, condensation, and pest intrusion. We seal and insulate this area using high-performance spray foam or rigid board, stopping unwanted airflow and protecting your home from moisture.
This upgrade not only improves comfort and air quality, it also plays a key role in your home’s overall energy efficiency.
Frequently Asked Questions
Does it improve energy efficiency?
Yes, sealing rim joists prevents heat loss and helps maintain stable indoor temperatures, especially on lower floors.
How long does the job take?
In most homes, it takes just a few hours, often completed in the same visit as other upgrades like air sealing or crawl space insulation.
What insulation is used in rim joists?
We typically use closed-cell spray foam due to its air-sealing power, moisture resistance, and durability. In some cases, rigid foam board may also be used.
What is a rim joist and why insulate it?
The rim joist is the outer edge of your floor framing, where the floor meets the exterior wall. It’s one of the most common areas for air leaks, moisture entry, and heat loss.
Will it help with drafts in my basement?
Absolutely. Rim joist insulation is one of the most effective upgrades for eliminating cold spots, stopping drafts, and improving basement comfort.
Stop Air Leaks
Better Indoor Air
Moisture Protection
Rebates Up to 75% Off Energy Upgrades
Thanks to PEPCO, BGE, and SMECO programs, you may qualify for thousands in savings
Covers insulation, air sealing, aeroseal, crawl space encapsulation & more
Instant rebates applied to your quote
$1,200 federal tax credit available
Our experienced team can help
We help homeowners across Maryland, DC, and Northern Virginia boost efficiency and comfort with rim joist insulation, air sealing, and full home performance upgrades, all with transparent pricing and trusted results.
Wondering if this upgrade is right for your home? Let’s take a look.
Get a Free Estimate
Whether you’re exploring options for attic insulation in your area or looking to qualify for PEPCO and BGE rebates, we’ll guide you through it.
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