ABOUT US
Based in Missoula, MT.
Proudly servicing all of Western Montana.
At HD Performance Insulation, we’re committed to efficiency, durability, and doing the job right the first time.
John Diem, Noah Diem, & Koletan Hafey
At HD Performance Insulation, our goal is simple. We help homeowners and contractors create healthier, more efficient spaces that are built to perform through every season.
What sets us apart is our understanding of how a home works as a complete system. We look beyond insulation to consider airflow, moisture, and heat movement so we can recommend solutions designed to last.
We specialize in quality insulation, air sealing, and energy efficiency upgrades that improve comfort, reduce energy loss, and support long term performance. From attics and crawlspaces to new construction and retrofit projects, we take pride in clean, detailed work and treating every home with care and respect.
No pushy sales. No cutting corners. Just honest work, clear communication, and a commitment to doing the job right.
Our mission is to be Western Montana’s trusted name for quality insulation and dependable service.
We look forward to working with you!