Professional Insulation Services in Bothell, WA

PNW Eco Insulation brings over 25 years of experience to Bothell homeowners who need insulation installation, moisture control, and energy efficiency solutions. As a family owned business, we understand the construction patterns and environmental factors that affect homes throughout Bothell solving problems with practical upgrades that improve comfort and reduce energy waste.


Crawl Space Insulation and Moisture Management


Bothell's proximity to wetlands makes crawl space moisture one of the most common issues we address. Homes near North Creek, Swamp Creek, or other low lying areas are vulnerable to seasonal water intrusion and persistent dampness.


Our crawl space services include:


  • Complete removal of wet or contaminated insulation
  • Installation of moisture resistant crawl space insulation
  • Heavy duty vapor barrier systems for high moisture environments
  • Strategic vent sealing based on your home's conditions
  • Drainage assessment and recommendations


Proper moisture management protects floor joists and subflooring while preventing musty odors from entering living areas.


Attic Insulation for Split Level and Multi Story Homes


Bothell has many split level and multi story homes, particularly in neighborhoods developed during the 1970s and 1980s. These designs create complex attic spaces with varying ceiling heights, multiple roof planes, and hard to reach areas where insulation settles or was never properly installed.


Complete attic solutions include:


  • Assessment of complex attic configurations
  • Removal of outdated or damaged materials
  • Blown in fiberglass or cellulose for consistent coverage
  • Batt insulation for specific applications
  • Air sealing around recessed lights, bath fans, and attic access


Upgrading attic insulation has an immediate impact on second floor comfort and heating costs during cool, damp winters.


Spray Foam for Modern Construction and Renovations


With ongoing development in Canyon Park, North Creek, and near the UW Bothell campus, many homeowners are adding ADUs, finishing basements, or converting garages into living space. Spray foam works well where traditional methods are less effective.


Common applications include:


  • Rim joist sealing in newer construction
  • Bonus rooms and finished attics
  • Garage conversions and ADU projects
  • Crawl space walls in encapsulation projects
  • Cathedral ceilings and vaulted areas


We help you understand when spray foam makes sense and when other insulation types offer better value.


Air Sealing That Targets Energy Loss


Even well insulated homes lose energy through air leaks. These commonly occur at rim joists, around ductwork, at plumbing and electrical penetrations, and where additions connect to original structures.

Professional air sealing reduces drafts, improves temperature control, lowers utility bills, and helps insulation work as intended. We often combine air sealing with insulation upgrades for comprehensive improvements.


Addressing Wildlife and Pest Issues


Bothell's green spaces and proximity to natural areas make homes attractive to rodents and wildlife. Squirrels, rats, and mice commonly enter attics and crawl spaces through gaps in siding, roof edges, and foundation vents.


Our approach includes:



  • Removal of contaminated insulation and nesting materials
  • Cleaning and sanitizing of affected spaces
  • Identification of entry points in soffits, vents, and gaps
  • Exclusion work to seal access areas
  • Fresh insulation installation after remediation


Solving both the damage and access issues prevents recurring problems.


Common Signs You Need Insulation Improvements


Bothell homeowners typically contact us when they notice floors that stay cold while others overheat, rising energy bills, uncomfortable rooms over garages or crawl spaces, damp or musty smells, or evidence of rodents in attics or crawl spaces.

These issues often indicate insulation breakdown, air leakage, or moisture problems that worsen over time.


Schedule Your Free Property Assessment


Every property is unique, which is why we offer free estimates to assess your needs and recommend the most effective insulation options for long-term comfort and cost savings in Bothell’s climate.

When thinking about insulation in Bothell, WA, trust the expertise of PNW Eco Insulation. Contact us today for your free estimate and let us help you transform your space into an energy-efficient haven. Experience the benefits of professional insulation services with a company that values quality and customer satisfaction.

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