Insulation Before & After in Milpitas, CA
Photos don’t lie. A thermal camera doesn’t care about sales pitches. Below are real jobs we’ve completed in Milpitas neighborhoods, with the actual blower-door numbers and the specific problems we found. When you’re ready to see what your attic looks like under infrared, we’ll bring the camera and a written price before any work starts.
Recent Transformations
Attic Insulation Removal & Replacement - Berryessa District, Milpitas
The homeowner called after a home energy audit revealed their original 1980s fiberglass had compressed to about four inches, well below the R-38 code minimum for Milpitas’s climate zone. We removed the degraded material, sealed top plates and recessed can light penetrations, then blew in GreenFiber cellulose to a settled depth of fourteen inches. The blower-door test read 3,800 CFM50 before air sealing and 2,400 after - a 37% reduction in conditioned air loss.
Crawl Space Encapsulation & Vapor Barrier - Milpitas Hills Townhome
Moisture was wicking through the dirt crawl space and warping the first-floor engineered hardwood. We installed a 12-mil reinforced polyethylene vapor barrier across the entire footprint, sealed to foundation walls with butyl tape, and closed the foundation vents per current building science for Milpitas’s mild, marine-influenced climate. Relative humidity dropped from 78% to 52% within 72 hours of sealing.
Spray Foam Insulation - Ranch-style Home Near Calaveras Boulevard
This 1962 ranch had a vented attic with ductwork running through 140-degree summer heat. Rather than bury the ducts in more fiberglass, we converted to a conditioned attic using open-cell Icynene spray foam on the roof deck and gable ends. The HVAC system now breathes 75-degree air instead of attic air, and the homeowner reported their summer cooling cycles dropped by roughly 40%. We documented the full application with photos and a written scope under Haven Standard Clause 1.
Radiant Barrier Installation - Mid-Century Home, Milpitas
The attic was hitting 155 degrees in July despite decent insulation depth - classic solar gain through dark composite shingles common in Milpitas’s older subdivisions. We installed a perforated radiant barrier to the underside of the roof deck, which dropped peak attic temperatures to 110 degrees. That 45-degree delta means less heat radiating downward, less load on the AC, and the existing insulation performs closer to its rated R-value because radiant heat isn’t overwhelming it.
Attic Air Sealing & Blown-In Top-Up - Milpitas Gateway Area
The homeowner had added insulation themselves five years prior but skipped the air sealing step - a common scenario we see in Milpitas. Warm air was still escaping around the chimney chase, bathroom fan housings, and the top plate of a load-bearing wall. We pulled back the existing blown-in, sealed every penetration with fire-rated foam and caulk, then replaced and topped up the insulation. Blower-door reading went from 4,100 CFM50 to 2,350. The job took one day, and they received a Documented Photo Record showing every sealed point.
Insulation Removal After Rodent Damage - Milpitas, Near Great Mall
Rats had nested in the fiberglass for two winters, compressing it and contaminating it with urine and droppings. We removed all affected material, HEPA-vacuumed the deck, installed steel mesh at all entry points including the eave gaps and plumbing penetrations, then replaced with Rockwool batts - naturally pest-resistant and non-combustible. The crew also found an unsealed HVAC return chase that had been pulling attic air into the system for years. Sealed it, tested it, documented it.
What Every Milpitas Job Includes
Whether it’s a full envelope upgrade or a targeted air-sealing pass, our process doesn’t change:
- Written price before any work starts - Haven Standard Clause 1: flat price, written scope, written warranty before anyone lifts a tool
- Air sealing first, insulation second - we never blow new material over an unsealed attic floor
- Before-and-after blower-door numbers - a pressurization reading that shows, in one figure, how much conditioned air your home was losing
- Documented Photo Record - included on every job, not available on request
- 365-Day Done Right Promise - if it’s not done right, we make it right
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Before
AfterWant Results Like These?
We’ve sealed and insulated over 9,000 homes since 2016, and every one started with a written price and ended with documentation. Call (650) 770-8707 - a live person answers 24/7, and we’ll schedule a free assessment of your attic, crawl space, or full building envelope. Bring us a competing written estimate and we’ll read it with you.
Written by Wes Okafor, Owner at Topside Attic Insulation Milpitas, serving Milpitas since 2016.