Delivering tighter, more energy-efficient homes and buildings since 1997, InsulVail partners with homeowners and builders across Summit, Eagle, Garfield, and Pitkin Counties to seal every gap and crack in your building envelope.

Air sealing is the process of locating and closing gaps, cracks, and seams in your home’s envelope, stopping uncontrolled airflow that drives up heating and cooling costs and invites moisture, allergens, and drafts into living spaces.
With decades of experience and a crew of trained professionals, we tackle every leakage point in new and existing homes, multifamily, and light-commercial projects:
| Location | Common Materials & Methods | 
|---|---|
| Attic plane & attic bypasses | Sealant foams, caulk, gaskets | 
| Rim joists & band joists | Spray foam, rigid gaskets | 
| Window & door perimeters | Compression gaskets, weatherstripping | 
| Penetrations (pipes, vents) | Fire-rated sealants, backer rod | 
| Foundation walls & sill plates | Injected foam, mortar mates | 
| Ductwork & HVAC connections | Mastic sealant, specialized tapes | 
1. Blower Door Test & Inspection We quantify your home’s air-leakage rate and pinpoint problem areas with infrared imaging and smoke pencils.
2. Targeted Sealing Using industry-grade sealants and foams, we close every identified gap, from the attic to the foundation.
3. Verification & Reporting A follow-up blower door test confirms airtightness improvements—documented for your records and code compliance.
Air sealing locates and seals unintended pathways through your building envelope to control airflow, boost efficiency, and prevent moisture intrusion.
Absolutely. Proper air sealing paired with insulation can cut heating/cooling costs by up to 15% and add real market value by demonstrating an energy-efficient home to buyers.
The Department of Energy estimates that most homeowners save 10–15% on total energy bills by sealing leaks and adding insulation—often recovering costs in just a few years.
Yes. A certified home performance contractor uses blower door diagnostics, infrared imaging, and proper ventilation strategies to seal safely and effectively, avoiding moisture or indoor-air quality issues.
Ready to tighten up your next project? Request a free estimate today and let our experts at InsulVail ensure your home or building performs at its very best.
 
              Our insulation team adds energy efficiency, comfort & value to homes & buildings.
 
              Environmentally friendly and effective, cellulose insulation works well in all homes.
 
              We can help keep your home cooler and more comfortable with a Blown In Blanket System.