Quality Insulation Installation (QII) in Granada Hills
Insulation installed correctly — and verified. QII is the energy-efficiency standard now commonly required on ADUs, remodels, additions, and new construction throughout Southern California.
Why Quality Insulation Installation Matters in Granada Hills
QII stands for Quality Insulation Installation — an energy-efficiency standard now commonly required on ADU projects, remodels, additions, new construction homes, and major energy retrofits throughout Southern California. At its core, it ensures insulation is not just installed, but installed correctly.
For years, insulation was often treated as an afterthought. By the time insulation contractors arrived on a project, budgets were already stressed, other trades had gone over schedule, and everyone just wanted to pass inspection. As a result, insulation often became treated like a commodity — just get it in the walls. But insulation is one of the most important systems in the entire building.
Installed Correctly, Not Just Installed
Even expensive insulation performs poorly if the installation quality is poor — and unfortunately, that happens all the time. QII is intended to create a much higher standard of installation quality: better air sealing, reduced air leakage, proper alignment, and proper coverage without gaps or compression.
Why It Matters Here
When temperatures hit 100+, 110+, wildfire smoke events, utility rate increases, or power outages, people suddenly realize how important building performance really is. A properly executed QII project can dramatically improve comfort, HVAC performance, indoor air quality, and long-term energy savings.
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What Quality Insulation Installation Requires
Grade 1 Installation
For fiberglass batts, QII expects a Grade 1 install: no major gaps, no compression, no missing sections, no large voids around wiring or plumbing, and full contact with the surface being insulated.
Proper Air Sealing
Reducing uncontrolled air movement through walls, ceilings, attics, electrical and plumbing penetrations, and framing gaps — one of the biggest factors in comfort and efficiency.
Third-Party Verification
QII projects typically require inspection by a certified HERS rater who verifies the install, air sealing, and that the building meets required energy performance standards.
Reduced Air Leakage
Proper alignment of insulation and full coverage without gaps or compression reduces leakage, cuts HVAC usage, and keeps dust and pollutants out of your living space.
Early Coordination
General contractor, HERS rater, and insulation contractor coordinate early — because once drywall is installed, many important details become impossible to fix.
A Better Alternative: Net & Blow
For many QII projects we recommend a Net & Blow system — mesh netting with dense-packed blown-in fiberglass that fills cavities more completely for higher delivered R-value and better sound control.
Our QII Process
We focus on proper sequencing, air sealing, and installation quality — not just passing code.
Get Involved Early
We recommend involving us during design, framing, and early rough-in — so we can coordinate insulation, air sealing, ventilation, and QII compliance before details get expensive or impossible to fix.
Air Seal Before Drywall
We address framing gaps, wall-to-ceiling transitions, electrical and plumbing penetrations, framing voids, and hard-to-access cavities — all while the walls are still open.
Install to Grade 1
Insulation is installed for full contact and complete coverage with no gaps or compression — or we install a Net & Blow system for more consistent, higher-performing cavity fill.
Coordinate Verification
We coordinate with the HERS rater so the installation and air sealing are properly verified and the building meets its required energy performance standards.
Ready for a more comfortable, efficient home?
What Granada Hills Homeowners Say
"Luke at Hunter's Insulation was awesome! Super knowledgeable and easy to work with. He explained the best insulation options and helped me make the right choice for my home. Really appreciate the honest advice—highly recommend!"
"Luke was very thorough in explaining all the details of the work, including why various steps are needed. (I check EVERYTHING told to me, and he was absolutely dead-on correct on all the details.) His crew kept the place very clean and tidy."
"Luke was easy to work with and educated me, as insulation was not something I had any knowledge of. In the end, I got exactly what I needed at a very fair price. Luke and his crew were very professional and did great work at my home."
QII Projects — Real Job-Site Photos
Real job-site photos from our crews across the Granada Hills area.
Quality Insulation Installation FAQs
What is QII and why should I care?
What does a Grade 1 installation mean?
Why is air sealing part of QII?
Who verifies the work?
Should I consider Net & Blow instead of batts?
When should I bring you in?
Get Your Free Estimate
Every home is different. Schedule a free, no-pressure evaluation and we will recommend what makes the most sense for your house, goals, and budget.
Get Your Free Estimateor call (818) 979-5857