Demilec Insulation in Northwest Austin, TX | Super Green Insulation Austin
There’s a thermal problem hiding in the hillside homes of Northwest Austin — and most insulation contractors never find it. The custom and semi-custom builds that climbed the Balcones Escarpment throughout the 1980s and ’90s, in neighborhoods like Cat Mountain, River Place, and Great Hills, were designed around limestone topography, not insulation logic. Stepped rooflines follow the grade of the hill. Separate shed and gable roof sections cover the garage level, the main living floor, and the upper bedroom tier independently. The result is three or four disconnected attic cavities stacked down a hillside — and a contractor who only pulls the top hatch and sprays foam has left the lower-tier volumes completely unaddressed.

Local energy auditors flag this pattern constantly in the 78730 and 78731 ZIP codes. We’ve seen it ourselves dozens of times: a homeowner in River Place pays for a full attic insulation job, watches their July electric bill barely move, and calls us frustrated. When Tom Hopkins and our crew walk the job, we almost always find at least one forgotten attic pocket — sometimes two — sitting empty or holding thirty-year-old deteriorated batts under a separate shed roof section. That’s the Northwest Austin service area difference, and it’s exactly why Demilec spray foam — properly applied to every cavity — is such a decisive solution for these homes.
Super Green Insulation Austin is an independent Demilec service provider. We’re not affiliated with or sponsored by Demilec, but our technicians are trained and experienced with the full Demilec product line — learn more about our Demilec services — and we’ve been doing this work in Northwest Austin and the broader Austin metro for over 16 years, including Insulation Installation in Northwest Austin for homeowners across the Balcones corridor. Call us at (866) 434-2901 to schedule a scope-of-work walkthrough.
Why Northwest Austin Residents Choose Us for Demilec Service
Tom Hopkins has led our crews across Northwest Austin since the company’s earliest days, and that tenure matters. We know the housing stock in the 78731, 78759, and 78730 ZIP codes intimately — the vaulted ceilings over canyon-view western glass walls in Great Hills, the pier-and-beam split-levels carved into limestone along the Balcones corridor, the Arboretum-area builds that look straightforward until you discover a fourth attic volume above the bonus room. Our technicians carry Demilec-compatible equipment and materials on every truck so we’re never waiting on a supply order to complete your job. With 784 verified reviews averaging 4.9 out of 5 stars, Northwest Austin homeowners have told us — repeatedly — that the thoroughness of our attic assessment is what sets us apart, and our Attic & Crawl Space Restoration in Northwest Austin work is a frequent part of that process.
Common Demilec Insulation Problems We Solve in Northwest Austin
- Missed lower-tier attic cavities in tiered hillside homes: In Cat Mountain and River Place, the hillside lot grade means multiple disconnected attic volumes sit under separate roof sections. Contractors who only access the highest attic hatch routinely leave the lower levels uninsulated — we map every cavity before we spray a single board-foot of Demilec foam.
- Demilec open-cell foam underperforming in Northwest Austin’s dual-load climate: The Balcones Escarpment takes the full force of unobstructed “blue norther” cold fronts in winter and pushes attic temperatures past 150°F in summer. Open-cell foam alone isn’t sufficient in these conditions; we pair Demilec closed-cell applications with radiant barriers where the western glass walls and unshaded ridgelines demand it.
- Aged and degraded existing foam from 1980s–90s installations: Much of the housing stock in 78730, 78731, and 78759 was built between 1975 and 1998, and original spray foam or batt insulation from that era has lost meaningful R-value through decades of heat cycling and moisture exposure. We remove and replace compromised material before applying fresh Demilec product — never spraying over failing insulation.
- Air-sealing failures around vaulted ceilings and canyon-view glazing: The dramatic western glass walls and vaulted ceiling lines that define so many Balcones and Great Hills homes create complex air-leakage pathways that standard attic insulation doesn’t address. Demilec two-component foam lets us seal these irregular geometries precisely, cutting the infiltration load that drives up cooling costs from June through September.
Demilec Models & Products We Service in Northwest Austin
Our Northwest Austin jobs routinely draw on the full Demilec spray polyurethane foam lineup. We work with Heatlok Soy 200 Plus closed-cell foam for high-performance attic and wall applications where maximum R-value per inch matters in tight hillside cavities. Agribalance open-cell foam goes into interior walls, soundproofing applications, and lower-load spaces. We also install and assess Heatlok HFO High Lift where environmental specifications call for it. If your property is in the Pflugerville corridor, you can also explore our Demilec service in McNeil (Pflugerville Area). All products are stocked locally so Northwest Austin jobs don’t wait on freight.
Service Areas Near Northwest Austin
From our Northwest Austin base, we serve the surrounding Austin metro without long scheduling waits. Our crews regularly work in North Central Austin — including Demilec repair in North Central Austin — Downtown and Central Austin — including Downtown & Central Austin Demilec service — Southwest Austin, South Austin, and East Austin. If you’re just outside the Northwest Austin core — in Westlake Hills for Demilec repair, Jollyville, or the Arboretum corridor — we cover those areas too. Call (866) 434-2901 to confirm coverage at your address.
Serving Northwest Austin, TX — Our Local Coverage Area
We’re based in the Northwest Austin area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
Book Your Demilec Service in Northwest Austin Today
Don’t let a hidden attic cavity cost you another summer of high cooling bills. Super Green Insulation Austin offers same-day assessments for Northwest Austin homeowners when the schedule allows, and we’ll identify every attic volume your home has — not just the obvious one. Call Tom Hopkins and our team at (866) 434-2901 to book your Demilec insulation service today.
Written by the team at Super Green Insulation Austin, serving Northwest Austin since 2009.