Why Union City Homeowners Choose Topside Attic Insulation Union City for Insulation
Since 2016, Topside Attic Insulation has sealed and insulated more than 9,000 homes across the country, and our Union City branch brings that same standard to Alameda County. We’re independently owned and operated by Wes Okafor, with a strong local reputation built on written quotes, documented results, and no surprises.
6 Reasons We’re Union City’s Top Insulation Company
1. A Decade of Proven Results You Can See
Topside Attic Insulation was founded in 2016 by a blower-door technician who got tired of blowing insulation over attics that were still leaking air. That origin story matters because it shaped our entire approach. Every job we do in Union City, from the older ranch homes near Decoto Road to the newer builds around the Union Landing area, starts with finding where your conditioned air is escaping. We publish the before-and-after blower-door number on every job. You see what you bought.
2. Strong Local Reputation Built on Documentation
We don’t ask you to trust us because we say we’re good. We ask you to read our three-star reviews, the ones where a homeowner explains exactly what we found and how we fixed it. That’s the evidence we care about. In Union City and nearby Newark and Fremont, our reputation rests on photos, readings, and written records, not slogans. Our local team lives here. Wes Okafor knows the specific challenges of insulating homes built during Union City’s 1960s expansion versus the tighter envelopes on newer construction near the Dumbarton Bridge corridor.
3. State-Licensed and Fully Insured
Every pro working under our name is required to hold the license and insurance California requires. We don’t treat that as a selling point; it’s the minimum. What we add is the Haven Standard, a five-clause code that goes beyond compliance. Clause 3, Verified crews, means licensed, insured, background-checked professionals, with documentation you can review. We carry the coverage that protects your home while we’re in it, and we don’t start work until you’ve seen it in writing.
4. Brand Expertise Across the Full Product Range
We specify the right material for your attic, not the one that moves fastest from our warehouse. Our crews are trained on Owens Corning, Johns Manville, and Knauf systems, plus spray foam products from Icynene and Demilec and cellulose from GreenFiber. In Union City’s mild marine climate, with our cool, damp winters and warm, dry summers, the choice between fiberglass batts, blown-in cellulose, or open-cell spray foam depends on your existing envelope condition. We use the real trade vocabulary, then explain it: a top plate is the horizontal framing member where your wall meets your ceiling, and it’s often unsealed in homes built before the 1990s. We find it, seal it, then insulate.
5. Transparent Pricing With Written Quotes Before We Start
Clause 1 of the Haven Standard is Have it in writing. That means a flat price, a written scope, and a written warranty before anyone enters your attic. We don’t do “call for a quote” because that phrase usually hides a sales pitch. For Union City homes, attic insulation typically ranges from $2,800 to $7,500 depending on square footage, existing insulation depth, and whether air sealing is needed first. We inspect, we measure, we photograph what we found, and we give you a single number in writing. No door upsell. No scope creep. No “while we’re in here.”
6. The Haven Standard Guarantee on Every Job
Our promise is simple: if the documented result doesn’t match what we quoted, we make it right. That includes revisiting air leaks we missed, adjusting insulation depth where it settled unevenly, or correcting any defect in our workmanship. We don’t count how many times we’ve honored this because the count is less important than the fact that it’s written, it’s binding, and it’s attached to your job record. Every insulation job leaves a documented record, and that record is your proof of what was promised and what was delivered.
Our Promise to You

The Haven Standard governs everything we do in Union City. Clause 2, Arrive on schedule, means a real arrival window, a named technician, and a text when they’re on the way. Clause 4, Evidence on every job, means photos of your attic before we touched it, photos of the sealed and insulated result, and the blower-door numbers that prove the improvement. Clause 5, No surprises, means the price you approved is the price you pay. If something unexpected comes up, we stop, photograph it, explain it, and get your written approval before proceeding. Our phone is answered 24 hours a day, seven days a week, by a live coordinator who connects you with our local team. Wes Okafor stands behind every job we complete in Union City, Newark, Fremont, and throughout our service area.
Before
AfterFrequently Asked Questions
We don’t blow insulation over an unsealed attic floor, and we prove the results. Most competitors skip the air sealing step or treat it as an upsell. Our 2016 origin as a blower-door technician’s response to that exact problem means our process is built around sealing first, then insulating, with documentation you can see. We serve Union City, Newark, Fremont, Menlo Park, East Palo Alto, Redwood City, Milpitas, North Fair Oaks, Mountain View, Atherton, Stanford, and Sunnyvale. Call (650) 381-1512 for a free written estimate.
We return and make it right. Our guarantee covers workmanship defects, missed air leaks identified in our initial scope, and insulation that doesn’t meet the depth we specified. Because every job is documented with photos and blower-door readings, there’s no dispute about what was promised. The remedy is in writing before we start, so there’s no ambiguity about what “satisfied” means. Call (650) 381-1512 and we’ll review your job record together.
No. Our attic inspections and written quotes are free. We inspect your attic, photograph what we find, measure your space, and deliver a flat-price quote with no obligation. The quote includes the scope, the warranty terms, and the expected blower-door improvement. We don’t start work until you’ve approved every line. Call (650) 381-1512 to schedule your free inspection.
Yes. Every pro working under our name is required to hold the California state license and insurance their trade requires. We don’t publish license numbers because they belong to individual contractors, but we provide them on request and include them in your written quote. Our Union City branch operates under the standards of Topside Attic Insulation, with local oversight from Wes Okafor.
We answer our phone 24 hours a day, seven days a week. Most Union City homeowners receive an inspection appointment within a few days of calling, and we schedule based on your availability, not ours. Same-week appointments are often available. Emergency situations, like insulation compromised by water intrusion or pest damage, get priority scheduling. Call (650) 381-1512 to check current availability.
Written by Wes Okafor, Owner at Topside Attic Insulation Union City, serving Union City since 2016.