crawl space air seal
Don’t let poor air quality affect your home! Our crawl space air sealing service is here to help. Get started with a free quote today!
Protect Your Home with Air Sealing
Crawl Space Air Sealing That Makes a Difference
Is your home feeling drafty, unevenly heated, or musty—no matter the season? The problem may be lurking below your feet. Air leaks in your crawl space allow outside air, moisture, and even pollutants to enter your home, driving up energy bills and reducing comfort. At Insulation Co, we specialize in crawl space air sealing that closes hidden gaps and cracks, helping your home stay warmer in the winter, cooler in the summer, and healthier all year long.
What We Do
We identify and seal leaks around vents, pipes, rim joists, and foundation gaps using high-performance materials like spray foam and sealant barriers. When combined with proper insulation and vapor barriers, air sealing transforms your crawl space into a protective envelope for your entire home.
Our Crawl Space Air Sealing Services Include
Leak Detection & Inspection
We identify all air leaks in your crawl space using thermal tools and visual inspection to target problem areas.
Sealing Rim Joists & Sill Plates
We seal gaps where the crawl space framing meets the foundation—common spots for air intrusion
Pipe & Utility Penetration Sealing
Openings around plumbing, wiring, and ductwork are sealed to prevent air, moisture, and pests from entering
Spray Foam or Caulk Application
We use high-performance materials like spray foam, caulk, and sealant tape to close gaps and cracks permanently
Vapor Barrier Integration
We install or upgrade your vapor barrier to work in tandem with air sealing for full moisture and draft control
Improve Energy Efficiency
Unsealed crawl spaces allow outside air to leak into your home, forcing your HVAC system to work harder. Air sealing locks in conditioned air and helps lower your energy bills.
Prevent Moisture & Mold
Gaps and cracks in your crawl space let in moisture, leading to mold growth, wood rot, and poor indoor air quality. Air sealing creates a protective barrier against water and humidity.
Block Rodents & Pests
Small openings in crawl spaces are entry points for rodents, insects, and other pests. Proper air sealing keeps critters out and protects insulation and ductwork from damage.
Enhance Indoor Air Quality
Up to 50% of the air in your home comes from your crawl space. Air sealing reduces dust, allergens, and contaminants, leading to a healthier living environment.
Expert Crawl Space Air Sealing Services
Signs that indicate it’s time to seal your crawl space. If you notice drafts, increased energy bills, or musty odors in your home. Additionally, if you have experienced issues with moisture or humidity in your crawl space, it’s a good idea to consider air sealing to prevent potential problems such as mold growth or wood rot. Overall, it’s a good idea to seal your crawl space if you are looking to improve energy efficiency, indoor air quality, and the overall comfort of your home.
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our service areas
south Washinton
- Seattle
- Bellevue
- Kirkland
- Renton
- Everett
- Federal Way
- Auburn
- Kent
- Mercer Island
- Bainbridge
- Redmond
- Bothell
- Newcastle
- Shoreline
- Lake Forest Park
- Tukwila
- Des Moines
- Issaquah
- White Center
- Kenmore
- Edmonds
- Mountlake Terrace
- Lynnwood
- Sammamish
- Snoqualmie
- North Bend
- Lake Stevens
- Woodinville
- Mukilteo
north washington
- Bellingham
- Mount Vernon
- Burlington
- Lynden
- Blaine
- Birch Bay
- Custer
- Ferndale
- Chuckanut
- Lummi Island
- Orcas Island
- Oak Harbor
- Everson
- Alger
- Nooksack
- Marietta
- Sedro Wolley
- Anacortes
- La Conner
- Stanwood
- Arlington