What Fullerton Homeowners Say About Walt’s Insulation
We’ve been insulating attics, walls, and crawl spaces in Fullerton since 2000, and the reviews below come from people who live in your neighborhoods. They called us with hot upstairs rooms, drafty walls, and monthly energy bills that made no sense. What they got was a straight answer, a written price, and work that holds up. We don’t ask anyone to leave a review. When the job is done, and the house finally feels right, that’s when people take the time to write. Here’s what they’ve said.
Recent Reviews
“Our upstairs bedrooms in the Golden Hill area were unbearable by 4 p.m. in August. Walt’s crew pulled out the old fiberglass that had settled to almost nothing and blew in new Owens Corning insulation to R-38. The difference was noticeable the same night. They showed up when they said they would, wore uniforms, and covered the hallway before hauling anything through the house.”
Javier F. – Golden Hill, Fullerton
“We had raccoons in the attic last fall. After the pest company removed them, we called Walt’s to clean the space and seal every entry point they could find. They replaced the chewed-up insulation and installed a radiant barrier in our attic. Our summer cooling bill dropped about 20 percent compared to the year before, and nothing has gotten back in since.”
Rosa T. – Sunny Hills, Fullerton
“I got three bids for crawl space encapsulation because the floor in our 1950s ranch house always felt damp. Walt’s wasn’t the cheapest, but the quote was the most specific. They explained exactly what the vapor barrier would cover, what they’d do around the piers, and why the drain mat mattered. The crew finished in two days, and three months later the musty smell is completely gone.”
Alejandro D. – West Fullerton
“We bought a house where the wall insulation was basically nonexistent. You could feel the outside temperature through the drywall. Walt’s drilled and filled the exterior walls with blown-in Rockwool. It was fascinating to watch, and the house holds its temperature so much better now. My dad is a contractor and he walked through after they left. He nodded a lot, which from him is a five-star review.”
Elena M. – Fullerton
“The old insulation in our attic had rodent droppings throughout. It was a health concern for our family. Walt’s removed every bit of it, sanitized the space, air sealed the top plates, and blew in fresh GreenFiber insulation. The whole job happened in one day. My wife was expecting a huge mess, but they left the house cleaner than they found it.”
Javier F. – Fullerton
“Our air conditioning would run all afternoon and the house would barely cool down. Walt came out himself for the initial look, which I appreciated. He didn’t try to sell me a bigger AC unit. He showed me with a thermal camera where the hot air was bleeding through. We did the attic air sealing and added a radiant barrier. Same AC unit, totally different house.”
Rosa T. – Fullerton
Why Customers Trust Us
Reviews like these don’t happen by accident. They’re the result of how we work in Fullerton day after day, and that comes down to a few things we refuse to compromise on. First, we’re locally owned and owner-operated. Walt Brenner, our owner, lives here and has walked through more attics in this city than he can count. When you call us, you’re talking to a person in the area who knows your neighborhood and understands how Fullerton’s temperature swings and older housing stock affect comfort.
Second, every job is covered by the Done Right Promise. That’s our lifetime workmanship guarantee, and it means exactly what it says. If we install it and it’s not right, we come back and fix it. No runaround, no arguing about whether something was in the original scope. We use trusted brands like Owens Corning, Rockwool, Johns Manville, Knauf, CertainTeed, Icynene, Demilec, and GreenFiber so the materials we stand behind are materials that hold up.
Third, we operate with background-checked, uniformed technicians on every visit. You’ll know exactly who is walking into your house, and that’s not a small thing when you’re letting someone into your attic. We also handle calls 24/7 with a live person, never an answering service. When something’s wrong in your attic, you don’t want to leave a message and hope.
If you’re thinking about insulation, removal, air sealing, or crawl space work in Fullerton, call us at (657) 216-9948 and talk it through. We’ll give you an honest assessment and a written price before any work begins.
Written by Walt Brenner, Owner at Walt’s Insulation, serving Fullerton since 2000.