Hybrid: Hybrid Insulation System for a superior duo.

Get the Air-Sealing Power of Spray Foam with the Cost-Effective Benefits of Fiberglass

Looking for the best balance of energy efficiency, comfort, and value? Quest Insulation Inc.'s Hybrid Insulation System combines 2 inches of closed-cell spray foam with net and blow fiberglass insulation to create a high-performance wall system designed for Montana's demanding climate.


This proven combination provides an exceptional air seal while maximizing the insulating value of your wall cavities. The spray foam creates a continuous barrier against air leaks and moisture, while the net and blow fiberglass completely fills the remaining cavity to increase thermal performance, reduce noise, and deliver outstanding energy efficiency—all at a lower cost than filling the entire cavity with spray foam.



Whether you're building a custom home, new construction, addition, shop, or commercial building, our hybrid system delivers long-lasting comfort and performance you can count on..

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(406) 961-3748
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1269 Meridian Road, Victor, Montana 59875, United States
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Benefits of Our Hybrid Insulation System

  • Superior Energy Efficiency – Two inches of spray foam seals air leaks, while fiberglass fills the remaining cavity to maximize insulation and reduce energy loss.
  • Lower Heating and Cooling Costs – A tighter building envelope helps your HVAC system work more efficiently, saving money on monthly utility bills.
  • Outstanding Air Sealing – Spray foam blocks unwanted drafts and minimizes heat transfer for year-round indoor comfort.
  • Enhanced Moisture Protection – Closed-cell spray foam helps reduce moisture intrusion, protecting walls from condensation and improving durability.
  • Excellent Sound Control – Net and blow fiberglass helps absorb sound, creating a quieter home with less noise between rooms and from outside.
  • Greater Value Than Full Spray Foam – Enjoy many of the benefits of spray foam while keeping overall insulation costs more affordable.
  • Complete Cavity Coverage – Blown fiberglass fills every corner and irregular space, eliminating gaps that can reduce insulation performance.
  • Built for Montana's Climate – Designed to perform through cold winters, hot summers, and everything in between.
Insulated attic room with pink foam walls, sloped ceiling, and a small window at the far end.

At Quest Insulation Inc., we work with homeowners, builders, and contractors to determine the best insulation system for every project. Our hybrid approach has become a popular choice for new construction because it delivers exceptional comfort, energy savings, and long-term performance without the higher cost of full spray foam insulation.


We proudly serve Missoula, Hamilton, Stevensville, Florence, Lolo, the Bitterroot Valley, and communities throughout Western Montana with professional insulation solutions tailored to your home or building.


Interested in our Hybrid Insulation System? Contact Quest Insulation Inc. today for a free estimate and discover why this combination is one of the most efficient and cost-effective insulation solutions available.


Submitting building plans? Email your plans to glen@questinsulation.net.



We partner with Meridian Drywall Supply to coordinate insulation materials and deliveries, helping keep your project on schedule from start to finish..