What San Marcos Homeowners Say About Topside Attic Insulation San Marcos
We’ve insulated and sealed more than 9,000 homes since 2016, and every job closes with a documented photo record and a written price that was set before anyone touched a tool. The reviews below come from real San Marcos homeowners who let us into their attics and crawl spaces. We don’t filter out the technical details, because that’s where the truth lives.
Recent Reviews
“They wouldn’t blow insulation until they’d sealed every top plate and can light. I watched the blower-door test drop from 3,800 to 1,900 CFM50 - that’s a pressurization reading that shows, in one number, how much air your building envelope is losing. The before-and-after numbers were in my packet before the crew left.”
Kelly G.
Blanco Vista, San Marcos
“Our 1987 ranch in Willow Creek had fiberglass batts stuffed against the roof deck with no air gap. Wes found mold on the north side and showed me photos before he touched anything. They removed it, installed baffles for ventilation, then blew in GreenFiber cellulose. The written scope said exactly what they’d do and what it would cost. No surprises.”
Xavier I.
Willow Creek, San Marcos
“I got a quote from another company for radiant barrier in my Sagewood attic. Topside gave me a free second opinion - we sat down and read the competing quote together. Theirs was stapled to the rafters with gaps at every seam. Wes’s crew used a proper radiant barrier with sealed overlaps and gave me the blower-door proof after. Saved me from a $2,400 mistake.”
Elena R.
Sagewood, San Marcos
“After the February freeze, our pipes in the crawl space froze twice. Topside encapsulated it with a 12-mil vapor barrier, sealed the rim joists with closed-cell spray foam, and insulated the walls. The crew texted me when they were on the way, wore uniforms, and left a photo record of every step. Our crawl space is now the driest part of the house.”
Cole N.
Dunbar Colony, San Marcos
“I’d had two other contractors in my Post Oak attic. Both said I needed more insulation. Wes climbed up, found the real problem - a disconnected flex duct pumping conditioned air into the soffit - and showed me a photo. Fixed the duct, sealed the penetrations, then added blown-in insulation. The house cooled down 4 degrees that afternoon. He charged me for the fix, not the full insulation job I’d been quoted elsewhere.”
Kelly G.
Post Oak, San Marcos
“My energy bill in San Marcos was hitting $340 in July. The home energy audit found our wall plates leaking and the attic hatch unsealed. Topside air-sealed first, then blew in Johns Manville fiberglass. Next July bill was $218. They gave me the blower-door numbers: 4,100 before, 2,200 after. Written warranty, documented photos, done in one day.”
Xavier I.
Centex, San Marcos
Why Customers Trust Us
Every review above points to the same thing: we document what we find, we fix it in the right order, and we prove the result. Under Haven Standard Clause 1, you get a flat price, written scope, and written warranty before anyone lifts a tool. No exceptions. The 365-Day Done Right Promise means if it’s not right, we make it right - backed by that same paperwork.
Our crews are background-checked and uniformed. Calls are answered by a live person, 24/7, at (737) 337-8049. No voicemail loops. No callback windows measured in business days.
We’ve sealed and insulated 9,000+ homes since 2016. Materials come from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber - no proprietary lock-in, so we use what fits your house, not what we’re pressured to sell.
Before you hire anyone for attic insulation, spray foam, or crawl space work in San Marcos, get a written price. Then call us for a free second opinion. We’ll read their quote with you.
Call (737) 337-8049. A live person answers.
Written by Wes Okafor, Owner at Topside Attic Insulation San Marcos, serving San Marcos since 2016.