Attic and Crawl Space Air Sealing in Burlington, WA

Serving Skagit, Snohomish and King Counties

Air leaks can let heated air escape through gaps between your living space and your attic or crawl space. Adding insulation without addressing those openings can leave part of the problem unresolved.

PNW Eco Insulation provides attic and crawl space air sealing for homes in Burlington and throughout Skagit, Snohomish and King Counties. We inspect the space, explain what needs attention, and seal air leaks before installing new insulation.

Take control of your home’s air quality contact us for a FREE ESTIMATE!

Why Air Sealing Comes Before New Insulation

Insulation helps slow heat transfer, while air sealing addresses gaps that allow air to move through your home’s structure. Both play a role in keeping your home comfortable.

During an attic inspection, we look for penetrations and openings where heated indoor air can escape into the attic. Addressing these leaks before adding insulation helps create a more effective insulation system.

Air sealing is also part of our crawl space restoration process. Once cleanup and necessary repairs are complete, we seal air leaks before installing replacement insulation.

Start With a Thorough Inspection

A lasting improvement starts with understanding the condition of your attic or crawl space. Owner Angel brings experience in HVAC, ductwork and insulation to each assessment.

Our inspection looks beyond insulation depth. We check for:

Air-sealing issues and the condition of the attic access.
Insulation depth and overall condition.
Signs of moisture, staining or mold.
Bathroom fan venting.
Attic ventilation, including soffit vents, ridge ventilation and baffles.
Rodent activity and contaminated insulation.

These findings help us recommend the right order of work. If there is standing water, mold or contaminated insulation, those issues may need attention before air sealing and new insulation.

Attic and Crawl Space Air Sealing

Attic Air Sealing

Openings around penetrations into the attic can allow heated air to leave your living space. We inspect for these gaps and check whether the attic access is airtight.

When insulation work is needed, we address air-sealing issues before adding new material. We also assess ventilation so the work accounts for both unwanted air leaks and the attic’s ventilation needs.

Crawl Space Air Sealing

Air sealing is an important step when restoring a damaged or contaminated crawl space.

For rodent-infested crawl spaces, our process includes removing contaminated materials, cleaning the space, closing rodent entry points and checking for continued activity. Air sealing follows before new insulation and a replacement vapor barrier are installed.

Quality Work With Clear Expectations

Angel built PNW Eco Insulation around doing the work correctly and paying attention to details.

During your assessment, we explain the recommended work, the steps involved and the expected timeline. Your written estimate reflects that discussion, so you know what to expect before the project begins.

Our team takes before-and-after photos of every job and inspects the completed work. From air sealing to insulation installation, quality guides the process.

Air Sealing FAQs

A white vapor barrier in a Washington home

Do you provide air sealing in both attics and crawl spaces?
Yes. Sealing accessible air leaks before adding insulation helps address openings that insulation alone may not stop. Angel checks for these issues during the inspection and recommends addressing them before new insulation is installed.
Do you provide air sealing in both attics and crawl spaces?
Yes. We assess air-sealing needs in attics and crawl spaces. The scope depends on the space’s condition and whether cleanup, repairs or insulation replacement are also needed.
Does my existing insulation need to be removed?
The most common leaks occur around attic penetrations, recessed lighting, plumbing and wiring openings, ductwork joints, attic hatch covers, and crawl space access points. These gaps are often invisible but can add up to the equivalent of leaving a window open all year.
What if you find moisture or ventilation problems?
We explain what we find and recommend the appropriate next steps. Standing water, mold and ventilation problems may need to be addressed before insulation work proceeds.
What can I expect during an estimate?
We inspect the attic or crawl space, explain the recommended work and discuss the process and expected timeline. You then receive a written estimate outlining the work.

Serving Burlington and Surrounding Communities

PNW Eco Insulation serves homeowners in Burlington and throughout Skagit, Snohomish and King Counties, including Everett, Snohomish, Kirkland, Lynnwood and Bothell.

Whether you are replacing damaged insulation or improving an underinsulated home, we can assess your attic or crawl space and explain where air sealing fits into the project.

Get a Free Air Sealing Estimate

Find out what your attic or crawl space needs before adding new insulation. Contact PNW Eco Insulation to schedule an assessment and receive a clear explanation of the recommended work.

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