Air Sealing in Granada Hills
Insulation slows heat down. Air sealing stops the leaks — closing the hidden gaps where air moves between your attic and living space.
Why Air Sealing Matters in Granada Hills
Most older Southern California homes are not properly air sealed. Sealing the hidden gaps where air leaks through your home helps your insulation perform, lowers bills, improves comfort, and reduces dust.
In many older homes there are small openings all over the attic floor and ceiling area — around electrical wires, plumbing pipes, air-conditioning vents, bathroom fans, recessed lights, the tops of interior walls, and gaps where framing meets drywall. Individually each opening seems small, but added together they create a lot of air leakage.
The Temperature Difference
In Southern California, attic temperatures can easily reach 150 degrees or more on a warm day, while the inside of the house may be cooled to 70 to 75 degrees — roughly a 75 to 80 degree difference. Because of that big gap, air naturally gets pushed and pulled through the small holes in the home. Hot attic air, dust, and insulation particles move toward the living space, and the cold air you paid for leaks back into the attic.
A Simple Way to Think About It
Air sealing is like closing the windows before running the air conditioner. If you ran your AC with a window cracked open, the house would still cool down somewhat, but the system would have to work much harder. Hidden air leaks work the same way — you may not see them, but they still make the home harder to cool and heat.
Fireblock foam& sealants
What Air Sealing Does for Your Home
Insulation That Performs
Insulation slows heat transfer but does not stop air leaks by itself. Sealing the gaps lets your insulation work the way it is supposed to.
Lower Utility Bills
When conditioned air stops escaping through attic penetrations, your HVAC system runs less and you waste less of the energy you paid for.
More Even Comfort
Stopping hot attic air and crawlspace air from being pulled into the living space helps homes that are hard to cool in the summer.
Cleaner Indoor Air
Sealing the openings keeps dust, insulation particles, and dirty attic air out of the rooms you live in.
Easier on Your HVAC
Less conditioned air gets pulled back toward the attic, so the system does not have to run longer than it should.
Photo-Documented
We provide photos of the areas we seal and explain the work — important because most sealed areas get buried under new insulation afterward.
Our Air Sealing Process
We treat air sealing as part of the insulation system, not as an afterthought.
Inspect & Identify Leaks
Before installing new insulation, we find the accessible leakage points across the attic floor — around wires, pipes, ducts, fans, and recessed lights.
Seal the Penetrations
We seal electrical holes, plumbing holes, AC vent openings, bathroom fan openings, recessed light areas, the tops of walls, and other visible gaps.
Use the Right Materials
We use fireblock foam, proper sealants, high-temperature materials where needed, and other blocking methods depending on the situation.
Document, Then Insulate
We photograph the sealed areas and explain the work in writing, then install the new insulation over a properly sealed attic.
Ready for a more comfortable, efficient home?
What Granada Hills Homeowners Say
"Luke told me that I would notice a decline in my electricity charges and that the house will stay cooler in the summer and warmer in the winter. The effect has been phenomenal. My AC used to kick in at 1:00 PM in the hot summer days and now it only come on at 4:00PM and stays on for seven minutes and turns off!"
"HUNTER'S INSULATION crew did an outstanding job of preparing our home so that no dust or debris entered our home. The new insulation and thorough duct cleaning has noticeably improved our comfort and temperature control. We highly recommend this company and thank Luke for his expertise."
"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."
Air Sealing — Real Job-Site Photos
Real job-site photos from our crews across the Granada Hills area.
Air Sealing FAQs
What is air sealing?
Why isn't insulation alone enough?
What materials do you use to seal?
Which homes benefit most from air sealing?
Will I be able to see the work after it's done?
How does air sealing affect my HVAC system?
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