Air Sealing

AIR SEALING

Seal air leaks for a healthier, more energy-efficient home

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Since 2009, Ecotelligent Homes has completed more than 3,000 insulation projects in SE Michigan. We’re proud to be a women-owned, women-led contractor, recently recognized with the Consumers Energy Highest Customer Satisfaction Award.

The 3 simple steps to seal air leaks

#1. Reach out

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Give us a call at (248) 291-7815, or send a message to schedule your energy audit. We’ll pinpoint leaks with a professional blower door test, explain the best options to seal your home, and go over pricing, priorities, and rebates.

#2. Seal your home

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Our licensed team will seal leaks with professional-grade materials, using spray foam and caulk where needed. We’ll target the biggest energy wasters first and complete the work efficiently, with minimal disruption to your home.

#3. Feel the difference

You’ll notice fewer drafts, more consistent temperatures, and lower energy bills right away. Plus, we’ll help you claim rebates and tax credits to maximize your savings and make sure you get every dollar you deserve.

"I had 4 quotes to have air sealing, attic insulation and rim joist insulation work done. Ecotelligent Homes provided the most complete assessment. Their pricing was very competitive and the quality of the work completed was outstanding. Recommend!"

You have lots of options for insulation contractors in SE Michigan.

See why homeowners choose Ecotelligent Homes. Google Reviews →

Insulation Resources

Home Energy Audit

Spray Foam Insulation

Rim Joist Insulation

Attic Insulation

Crawlspace Encapsulation

Air sealing and insulation from a local contractor your can trust

Our spray foam, caulk, and weatherstripping all come with a lifetime manufacturer’s warranty. We also stand behind a price match guarantee. If another Consumers Energy or DTE-approved contractor offers the same scope of work for less, we’ll match their price. You get quality materials, professional installation, and honest pricing.

Do you have questions about air sealing or insulation for your home?

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Send us a quick message, or subscribe to our newsletter to get the latest on rebates, exclusive deals, and seasonal energy-saving strategies for your Michigan home.

We're here to help.

Just give us a call at (248) 291-7815, or send us a message anytime →

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Common questions about Metro Detroit air sealing and insulation

If you're just starting to learn about air sealing

What is air sealing and why does it matter?

Air sealing is the process of finding and closing up gaps and cracks in your home’s exterior—places like attic top plates, rim joists, around pipes, and electrical penetrations.

These small leaks might not look like much, but together they add up to the size of an open window (or even a few windows).

Sealing those leaks keeps conditioned air inside and outdoor air (and moisture, allergens, or pests) out. It’s one of the most cost-effective ways to improve comfort, lower your energy bills, and reduce the strain on your heating and cooling system.

How do I know if my home needs air sealing?

There are a few telltale signs:

You feel drafts, especially around windows, doors, or baseboards
Some rooms are colder or hotter than others
Your energy bills are higher than they should be
You notice excessive dust or poor indoor air quality
Your furnace or AC runs constantly just to maintain temperature

The most accurate way to know for sure is with a blower door test, which measures how much air is leaking out of your home. It gives a clear picture of where the biggest leaks are and how much sealing you need.

We offer blower door testing as part of our home energy audits. To schedule, just give us a call at: (248) 291-7815.

Will air sealing lower my energy bills?

According to the U.S. Environmental Protection Agency (EPA), homeowners can save an average of 15% on heating and cooling costs (or 11% on total energy costs) by air sealing their homes and adding insulation in attics, floors over crawl spaces, and basements.

In the Metro Detroit area, where heating and cooling expenses can average around $2,000 annually, this translates to potential savings of approximately $300 per year on heating and cooling costs.

These savings not only reduce your utility bills but also enhance indoor comfort by minimizing drafts and maintaining consistent temperatures throughout your home.

Where are the most common air leaks in a home?

Some of the biggest energy wasters in a home are hidden in plain sight. Common leak points include:

Attic top plates and recessed lights
Gaps around windows and doors
Rim joists in the basement
Plumbing and electrical penetrations
Fireplace flues and chimneys
Vents and fans that lead outdoors
Access hatches to attics and crawlspaces

Air leaks aren’t always obvious, but a blower door test can quickly find where your home is losing air and costing you comfort.

What's the difference between air sealing and insulation?

Air sealing and insulation work together, but they do very different things.

Air sealing closes the gaps and cracks in your home’s exterior where air leaks in or out—think of it as stopping the drafts.
Insulation slows down the transfer of heat—keeping warm air inside during winter and outside during summer.

Without air sealing, insulation can’t do its job well. Imagine wearing a warm coat on a windy day—it doesn’t help much if it’s unzipped. That’s why the most effective energy upgrades include both.

What type of wall insulation to install?

How does a blower door test find air leaks?

A blower door test uses a high-powered fan mounted in an exterior doorway to pull air out of your home, lowering the indoor air pressure. This forces outside air to rush in through any gaps, cracks, or leaks in your building envelope.

As the test runs, our technicians use tools like smoke pencils, infrared cameras, and their own hands to find where air is leaking. It’s the most accurate way to measure your home’s overall airtightness and pinpoint exactly where air sealing is needed.

Is spray foam safe for indoor air quality?

Spray foam can be safe for indoor air quality when it’s installed properly and allowed to cure fully.

The biggest concern is off-gassing—especially with two-part high-pressure spray foam—which can release chemicals during and shortly after installation.

At Ecotelligent Homes, we use GreenGuard-certified spray foam to limit VOC emissions, and we follow best practices to protect your home’s air quality.

We only use two-part spray foam in areas with good ventilation or where curing can happen safely, and we avoid it entirely in sensitive or confined spaces.

We also monitor your home’s ventilation before and after sealing to make sure air quality stays safe and healthy.

What does GreenGuard certification mean?

GreenGuard certification means a product has been tested for chemical emissions and meets strict standards for indoor air quality. It’s awarded by UL (Underwriters Laboratories) and is one of the most widely recognized labels for low-emitting building materials.

For spray foam, this certification ensures the product releases minimal volatile organic compounds (VOCs), making it safer to use in homes—especially when installed properly with the right ventilation.

At Ecotelligent Homes, we prioritize GreenGuard-certified products to protect your air and your health.

What’s the difference between single-part and two-part spray foam?

We use two main types of spray foam for air sealing.

Single-part, low-pressure spray foam is great for small, accessible gaps like attic top plates and rim joists. It’s easier to control and ideal for precision work.
Two-part, high-pressure spray foam is used in larger or hard-to-reach areas where a tight, expansive seal is needed. It fills irregular spaces quickly and completely.

Check out the table below for a quick comparision.

Spray Foam Comparison

Feature	Single-Part Low Pressure	Two-Part High Pressure
Where it's used	Attic top plates, rim joists	Wall cavities, large gaps, tight spaces
Expansion rate	Moderate	High
Curing time	Slower	Faster
Best for	Targeted sealing	Full coverage in tricky areas

Air sealing and ventilation concerns

Can my home get too "tight" after air sealing?

It’s possible—but not if it’s done right. When a home is sealed too tightly without proper ventilation, it can trap indoor pollutants and moisture, which may impact air quality or cause humidity issues.

That’s why we always measure your home’s airflow during the energy audit. If the blower door test shows that sealing could bring you below the Building Airflow Standard (BAS), we’ll add a properly sized bath fan or recommend a fresh air intake to keep your home safe and healthy.

The goal is to hit the sweet spot: tight enough to save energy, but ventilated enough to breathe easy.

How do you make sure my home still has enough fresh air?

We test your home’s natural ventilation rate with a blower door test during the energy audit. If sealing brings airflow below the Building Airflow Standard (BAS), we take steps to bring in fresh air safely—like installing a quiet, efficient bath fan or setting up a fresh air intake through your existing duct system.

We’ve also installed HRVs and ERVs in a few cases, but for most homes—especially with older ductwork—simple, targeted solutions get the job done without major upgrades. The result: a home that’s both efficient and healthy.

Air sealing: Photos from the field

Air Sealing Case Studies

Case study: Turning a chilly basement into a cozy rec room

Case study: Turning a chilly basement into a cozy rec room Insulation, Rim Joist Insulation Estimated reading time: 7 minutes “Would HIGHLY recommend this company.” -Jerry H. in West Bloomfield, MI That’s how Jerry H. summed up his experience with Ecotelligent Homes after transforming his cold, underused basement into a rec room that’s now the […]

Case Study: Crawlspace Encapsulation in Ann Arbor, MI

Case Study: Crawlspace Encapsulation in Ann Arbor, MI Crawlspace Insulation, Insulation, Rim Joist Insulation, Spray Foam Insulation Estimated reading time: 6 minutes “Ecotelligent Homes is refreshingly customer-centered, knowledgeable, and honest. Communication is easy, timely, and thorough.” – Leslie R. in Ann Arbor, MI Our client Leslie R. moved into her 1940s home in Ann […]

Case Study: How a Bungalow Beats the Heat in Michigan

Case Study: How a Bungalow Beats the Heat in Michigan Air Source Heat Pump, Attic Insulation, Heating & Cooling, Insulation, Rim Joist Insulation Estimated reading time: 7 minutes Our client Sarah L. recently moved into a charming 1942 bungalow in Ferndale, Michigan. Sarah found a lot to love, but just like any new home, there […]

More Case Studies >

Air Sealing Blog Posts

How to Prevent Ice Dams with Air Sealing and Attic Insulation in Michigan

Prevent ice dams and protect your home with expert air sealing, attic insulation, and ventilation. Learn how to stop roof leaks and costly damage in Southeast Michigan. Schedule a home energy audit today!

Is Spray Foam Insulation Safe?

Whole house fans have been around for years, and they’ve started to get more attention from homeowners. Here’s the question we hear all the time: “Should I keep or remove my whole house fan?” In this article, we break it down for homeowners in the Detroit Metro area.

Don’t Be Baffled by Baffles

Think of baffles as the unsung heroes of your attic or roof. They ensure proper airflow, prevent moisture buildup, and help your insulation do its job without any hiccups. In this article, we break down what you need to know about baffles, from what they are to why they’re essential and how they should be installed in your attic.

Where do you offer air sealing and insulation?

We offer air sealing, insulation, and offer other services in an area that's about a 45 minute drive from our office in Farmington Hills. Here's a service area map.

Novi
Plymouth & Plymouth Township
Royal Oak
South Lyon
Sterling Heights
Troy
West Bloomfield
Wixom