What Union City Homeowners Say About Topside Attic Insulation Union City
We’ve insulated and sealed more than 9,000 homes since 2016, and every one of those jobs started with a written price and ended with a documented photo record. Reviews matter to us because they’re the only marketing we can’t write ourselves. When a homeowner in Union City takes time to describe how their PG&E bill changed or what the crew actually did in their attic, that’s the measure we hold ourselves against. We don’t offer discounts for reviews or chase star counts. We do the work, show the numbers, and let homeowners speak for themselves.
Recent Reviews
“Our 1960s ranch in the Decoto District had original fiberglass batting that was compressed to about two inches and rodent damage along the eaves. Wes walked the attic with me, showed me the top plates leaking air around the wire penetrations, and explained why blowing new insulation over the old stuff without sealing first would be throwing money away. The crew sealed every penetration, ran the blower door, then blew in GreenFiber cellulose. Our January PG&E bill was $187 instead of $312. The photo record they sent showed before, during, and after. I’ve never had a contractor document work like that.”
- Beatriz T., Decoto District, Union City
“I got two other estimates for spray foam in our crawl space under the house near Alvarado-Niles Road. One guy quoted me over the phone without looking. The other wanted to start the next day with no written scope. Wes brought a competing quote to our kitchen table, read it line by line with us, and pointed out where they were skipping the vapor barrier entirely. His crew encapsulated the crawl space with Demilec open-cell foam on the rim joists, laid a 10-mil vapor barrier over the dirt, and sealed the foundation vents. No more musty smell coming up through the floor registers. The written price was the price we paid.”
- Chris K., Alvarado-Niles area, Union City
“We bought a flipped house in the East Industrial area that looked great downstairs but had an attic that was basically empty above the drywall. The inspector flagged it, so I called for an energy audit. Wes ran the blower door - 5,800 CFM50, which he said was like leaving a window open year-round. His crew did the air sealing first, targeting the recessed can lights and the chimney chase that was dumping conditioned air into the attic. After sealing and blowing in Owens Corning AttiCat, the second blower door read 2,900. He printed both numbers on the invoice. That’s not a feeling. That’s a 50 percent reduction I can show the next buyer.”
- Kristen S., East Industrial, Union City
“I had another company remove old insulation after we had rats in the attic near the Union Landing area. They cleaned it out and left. Three months later, new rats. Wes’s crew didn’t just clean - they found where the rats were getting in, sealed every gap larger than a quarter inch with steel mesh, sanitized the decking, and then blew in new Knauf EcoFill. He explained that rodents compress insulation to travel through it, so the new stuff needed to be protected at the entry points. The 365-Day Done Right Promise meant something when I called six months later about a small settling issue and they came back to add more at no charge.”
- Daniela T., Union Landing area, Union City
“Our wall insulation job in the old Central District was complicated - lath and plaster, no existing insulation in the stud bays, and a homeowner association that wanted no exterior disturbance. Wes proposed dense-packing cellulose from the interior, drilling discrete holes that we could patch and paint. The crew protected every surface, worked room by room, and the photo record showed each bay before and after filling. The house holds temperature now. Before, the wall behind our couch was cold to the touch in January. Now it’s not. Simple as that.”
- Chris K., Central District, Union City
“I was skeptical about radiant barrier in our attic off Whipple Road because I’d read mixed things online. Wes didn’t push it. He measured the roof deck temperature in August - 148 degrees - and explained that radiant barrier works best when combined with good attic ventilation and adequate insulation underneath, not as a standalone fix. We did all three: added baffles for airflow, blew in R-38 cellulose, and stapled radiant barrier to the rafters. The attic temperature dropped 35 degrees. My air conditioner runs less. He could have sold me just the shiny foil and I wouldn’t have known the difference. Instead he told me what actually works in Union City’s climate, where we get real heat but also cool marine layer mornings that affect attic moisture.”
- Beatriz T., Whipple Road area, Union City
Why Customers Trust Us
The pattern in these reviews isn’t accident. It’s the Haven Standard, applied to every job we do in Union City.
We seal first, then insulate. Every time. We’ve seen what happens when crews skip the air sealing and blow insulation over leaky top plates - the homeowner gets a thick attic floor and the same drafty house underneath. Our before-and-after blower-door numbers prove the difference in a single figure: CFM50, the cubic feet per minute of air leakage at 50 pascals of pressure. You get that number in writing.
We don’t start work without a written price, a written scope, and a written warranty. Haven Standard Clause 1. No exceptions, no surprises. If you’ve got another estimate, bring it. We’ll read it with you, line by line, and tell you what’s included and what’s missing. That free second opinion has saved Union City homeowners from incomplete scopes more times than we can count.
Every visit produces a documented photo record, included automatically. Not available on request - it’s just part of leaving a job properly. And if something isn’t right within 365 days, we make it right. The Done Right Promise covers all completed work, backed by the written scope you already have in hand.
Our materials come from eight major manufacturers: Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. No proprietary lock-in means we specify what’s right for your house, not what we need to move this quarter.
Calls are answered by a live person, 24/7. No voicemail loops, no callback windows measured in business days. If you’re dealing with an insulation emergency in Union City - a failed vapor barrier flooding your crawl space, rodent damage compromising your attic air quality, or just a PG&E bill that keeps climbing - we’re here.
Call (650) 381-1512 to schedule an audit or review an estimate you’ve already received. We’ll show up on time, introduce the technician by name, and text you when we’re on the way. Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way.
Written by Wes Okafor, Owner at Topside Attic Insulation Union City, serving Union City since 2016.