CertainTeed Spray Foam Insulation in Cedar Park: What to Know First
We provide independent CertainTeed spray foam insulation service in Cedar Park, typically completing open-cell and closed-cell jobs within one to two days of scheduling. Most homeowners receive a written price before any work starts, with no deposit required to hold the slot. This page is for CertainTeed owners who need spray foam added to an existing envelope - whether that’s topping off degraded batts in a Buttercup Creek attic, sealing a rim joist in a Ranch at Brushy Creek crawl space, or converting a garage ceiling to conditioned space in a 2019 build off Cypress Creek Road. Call (737) 245-6428 for a free estimate.
How CertainTeed Products Fail - and How We Fix Them
- CertainTeed CertaSpray Open-Cell in hot attics: The 0.5 lb/ft³ density open-cell we find in Cedar Park attics from the 2018-2021 build wave can shrink 2-3% when attic sheathing temperatures spike past 140°F, which happens routinely here from June through September. We measure the gap with a feeler gauge, then cut back to sound foam and respray with a reformulated open-cell rated for Texas attic exposure, or spec closed-cell if the roof deck is within 2 inches of the rafter.
- CertainTeed CertaSpray Closed-Cell with delamination at OSB: Closed-cell’s rigidity is the point - until it pulls away from oriented strand board that was installed at 19% moisture content and dried to 10%. We find this in Cedar Park’s quick-built 2020-2022 inventory, especially where the roof deck was green when foamed. Our fix: remove the detached sections with a wire wheel, treat the substrate with a moisture-meter check, then respray with a primer-specified pass at 2 inches per lift.
- CertainTeed IntelliBatts with spray foam hybrid systems: Homeowners who had CertainTeed fiberglass batts installed first, then hired a separate crew to spray foam later, often find the batts compressed against the foam face, killing the R-value of both materials. We pull the compromised batts, air-seal the top plates and penetrations with single-component foam, then reinstall with a proper vent channel or spec full spray foam conversion.
- CertainTeed MemBrain vapor retarder failures in mixed-humidity zones: The smart retarder that works fine in Chicago often stays open too long in Cedar Park’s shoulder seasons, letting moisture accumulate against spray foam in unvented assemblies. We replace with a class-I vapor retarder where the assembly demands it, or redesign the ventilation strategy so the foam isn’t doing all the moisture work alone.
- CertainTeed CertaSpray in garage ceiling applications with vehicle exhaust exposure: The aromatic compounds in gasoline vapor can plasticize certain lot numbers of pre-2020 CertaSpray open-cell, turning it tacky. We see this in Cedar Park homes with attached garages where the HVAC return was poorly isolated. We remove the degraded foam, seal the garage-to-house pressure boundary with closed-cell, and verify with a blower-door subtraction test - measuring the garage’s contribution to total house leakage.
Our CertainTeed Spray Foam Insulation Process

- 1
Pre-install infiltration test. We pressurize the house with a blower door and record the CFM50 - the airflow needed to hold 50 Pascals of pressure, which tells us exactly how leaky the envelope is before we touch anything. Wes Okafor started doing this after his training at Olive-Harvey College, and we won’t skip it.
- 2
Written price and scope. You get a flat price, a written scope of work, and a written warranty before anyone lifts a tool. Haven Standard Clause 1. No exceptions.
- 3
Air sealing first. Top plates, can lights, plumbing and electrical penetrations, and the attic hatch get sealed with single-component foam or gasketed covers. Seal the leaks first. Then insulate. The order matters more than the product.
- 4
Spray foam installation. We match the CertainTeed product line where appropriate, or spec equivalent from Owens Corning, Johns Manville, or Icynene if the assembly demands different chemistry. We photograph every stage for the Documented Photo Record.
- 5
Post-install verification. On applicable jobs, we run the blower door again and hand you the before-and-after ACH50 numbers - the air changes per hour at 50 Pascals, which shows in one figure how much tighter the house got.
- 6
Cleanup and documentation. The crew vacuums, re-installs any moved fixtures, and delivers your written record: scope, photos, test results, and warranty. The 365-Day Done Right Promise starts now.
What CertainTeed Spray Foam Insulation Costs in Cedar Park
Most attic spray foam jobs in a Cedar Park home between 1,800 and 2,800 square feet run $3,200 to $5,800 for open-cell on the roof deck, and $4,800 to $8,400 for closed-cell in the same space. Rim joist work in a typical crawl space runs $1,800 to $3,200. Garage ceiling conversions, which require fire-rated thermal barrier coating over the foam, add $800 to $1,400.
What moves the price: accessibility (steep-pitch roofs add labor), whether we’re removing degraded existing foam first, and whether the assembly needs a vapor retarder upgrade for Cedar Park’s humidity swings. We also service Reflectix radiant barrier systems when they’re part of the same envelope.
Bring us any written estimate and we’ll read it with you - free second opinion. Call (737) 245-6428 for an exact quote. Estimates are free.
Why Cedar Park Homeowners Call Topside Attic Insulation Cedar Park for CertainTeed Work

We’ve sealed and insulated over 9,000 homes since 2016, every one with a written price before work started and a documented record when the crew left. Our technicians are background-checked and uniformed, and a live person answers calls 24/7 - no voicemail loops, no callback windows measured in business days. We don’t carry proprietary product lock-in; we source from CertainTeed, Owens Corning, Johns Manville, Knauf, Rockwool, Icynene, Demilec, and GreenFiber, so the specification follows the assembly, not the distributor’s monthly incentive. The 365-Day Done Right Promise applies to all completed work. If it’s not done right, we make it right.
FAQs
Adding spray foam to an assembly that originally held CertainTeed batts or blown-in does not automatically void the insulation warranty, but CertainTeed’s coverage on the original product typically ends at the modification date. We document the pre-existing condition with photos so you have a dated record if a claim arises. Call (737) 245-6428 if you need help reading your warranty language.
We can source CertaSpray through our supplier network, though we often spec equivalent-density foam from Icynene or Demilec if the lot chemistry or cure time better suits your assembly. As an independent CertainTeed service provider, we choose the material based on performance, not brand obligation. We’ll show you both options with the data sheet.
Spot repairs run 30-50% less than full removal and respray, but only make sense if the damage is localized and the remaining foam passes an adhesion test. If we find more than 20% delamination or shrinkage, full replacement is usually the better value. We give you both numbers in writing before you decide.
We typically schedule CertainTeed spray foam estimates within 48 hours, and most jobs start within 3-5 business days of approval. Emergency situations - exposed foam with active moisture intrusion - get same-day response. Call (737) 245-6428 to check current availability.
Open-cell spray foam in an unvented attic in Cedar Park’s mixed-humidity climate requires a class-II or class-I vapor retarder on the warm-in-winter side, per IRC R806.5. Closed-cell at 2 inches or greater acts as its own retarder. We test with a moisture meter and specify accordingly - never guess based on product name alone.
Written by Wes Okafor, Owner, Topside Attic Insulation Cedar Park at Topside Attic Insulation Cedar Park, serving Cedar Park and nearby areas.