Insulation Before & After in Leander, TX
Photos don’t lie. A blower-door number doesn’t either. We’ve documented every attic, crawl space, and wall cavity we’ve touched in Leander since 2016, and the difference between where these homes started and where they finished is measurable in CFM50, monthly utility bills, and whether the second bedroom finally stays cool in August. Here’s what that actually looks like.
Recent Transformations
Attic Air Sealing + Blown-In Fiberglass in Crystal Falls
The homeowner in Crystal Falls had added insulation twice before we arrived, and the second floor still ran eight degrees warmer than the thermostat setting. We found the real problem within ten minutes of the blower-door test: 4,800 CFM50 with the attic floor contributing more than half the leakage. We sealed every top plate, wire penetration, and can light with fire-rated caulk and foam, then blew in Owens Corning AttiCat fiberglass to R-38. Final blower-door reading: 2,400 CFM50. The second bedroom held 72 degrees the following August, and the homeowner sent us a photo of the utility bill.
Crawl Space Encapsulation in Mason Creek
This 1987 Mason Creek home had the classic Central Texas crawl space problem: summer humidity above 80%, musty air pulling straight into the living space through floor gaps, and fiberglass batts hanging in black strands from the joists. We removed the degraded material, sealed the rim joists with closed-cell spray foam, and installed a complete 12-mil vapor barrier system sealed at all seams and piers. The relative humidity dropped to 52% within 48 hours. The homeowner noted the hardwood floors stopped cupping three weeks later.
Spray Foam Insulation in Travisso
The bonus room over the garage in this Travisso build was technically finished but unusable from May through October, with surface temperatures on the drywall exceeding 95 degrees. The builder had left the roof deck uninsulated and the knee walls unsealed. We applied Icynene open-cell spray foam directly to the roof deck at 5.5 inches, creating a conditioned attic and moving the thermal boundary to the roofline. The room now stays within two degrees of the main house. We published the before-and-after blower-door numbers: 3,100 CFM50 down to 1,800, with the bonus room contributing zero measurable leakage after.
Radiant Barrier + Attic Cleaning in Leander Proper
An older home near Bagdad Road had a decade of squirrel activity in the attic, with droppings compressed into the existing fiberglass and a vapor barrier torn to shreds. We don’t blow new material over that. We removed all contaminated insulation, sanitized the deck with an enzyme treatment, sealed every entry point with rodent-proof hardware cloth, then installed new GreenFiber cellulose to R-49 with an Owens Corning radiant barrier stapled to the rafters. The attic temperature dropped 28 degrees on a 102-degree day in July. The homeowner’s comment: “I can finally store boxes up there without everything smelling like a barn.”
Insulation Removal and Replacement in Cedar Park Border
This home on the Leander-Cedar Park line had a roof leak that went unaddressed for two years. The fiberglass batts held water like a sponge, and the OSB decking showed spot mold. After the roofing contractor finished their work, we came in to handle the envelope. We removed all wet material, treated the decking with antimicrobial, and let it dry to below 15% moisture content before installing anything new. Then we air-sealed the full attic floor and blew in Knauf EcoFill to R-38. The documented photo record showed the moisture meter readings at each stage. Under Haven Standard, we don’t cover problems with new material.
Wall Insulation Retrofit in Paloma Lake
Paloma Lake has a cluster of early-2000s builds where the builder skipped exterior wall insulation entirely, a practice that was legal then and miserable now. This homeowner’s west-facing master bedroom hit 85 degrees by 4 PM in June with the AC running continuously. We drilled access holes at the top and bottom of each stud bay and dense-packed GreenFiber cellulose at 3.5 pounds per cubic foot, filling every cavity without settling gaps. The wall surface temperature dropped 14 degrees on the first hot day after. No drywall replacement needed, and we matched the orange-peel texture on the repair patches.
Want Results Like These?
Every job here started the same way: a homeowner called (737) 252-7159, we scheduled a visit, and they received a written price before any work started. No exceptions. If you have a competing estimate, we’ll read it with you line by line. Our 365-Day Done Right Promise applies to everything we do in Leander, and you’ll get the documented photo record and blower-door numbers to prove what changed. Call (737) 252-7159 or bring us your written estimate for a free second opinion.
Written by Wes Okafor, Owner at Topside Attic Insulation Leander, serving Leander since 2016.