Insulation Before & After in Dallas, TX
Numbers on a spec sheet tell you one thing. Walking into a bedroom that used to hit 82 degrees by 3 p.m. in July tells you another. This page shows what actually changes when attic insulation and spray foam get installed correctly in Dallas homes. No stock photos, no staged shots. Just the work we do, the problems we find, and what the attic looks like when we’re done. Glenn Hartley has been running insulation crews in Dallas long enough to know that the before photo is usually the more honest one.
Recent Transformations
Blown-In Fiberglass Attic Topping in Lake Highlands
The problem was classic for a 1990s Lake Highlands two-story: the original fiberglass batts had settled to maybe four inches in spots, and the master bedroom sat directly under the worst of it. The upstairs ran 9 to 11 degrees warmer than downstairs every afternoon. We air-sealed the top plates and plumbing penetrations, then blew Owens Corning fiberglass to R-38 across the entire attic floor. Within a week, the homeowner told us the upstairs thermostat stopped losing the battle around 2 p.m. That’s what consistent depth plus sealed air leaks does in a Dallas August.
Open-Cell Spray Foam on the Roofline in East Dallas
This 1930s East Dallas bungalow had the furnace and ductwork in the attic, which meant the HVAC was working inside a 140-degree box every afternoon. The homeowner’s summer bills were pushing $400 a month. We sprayed Icynene open-cell foam directly on the underside of the roof deck, converting the attic into a semi-conditioned space. The result was immediate: the attic temperature now tracks within a few degrees of the house, and the AC cycle time dropped noticeably. For older Dallas homes with mechanicals in the attic, this is often the single highest-impact insulation change you can make.
Batt Removal and Rockwool Replacement in Richardson
We don’t usually recommend full batt removal unless there’s a reason. This Richardson ranch had one: a squirrel had been living in the attic for what looked like a full season. Soiled, compressed fiberglass isn’t something you just blow over. We removed the contaminated material, sanitized the decking, and fit Rockwool batts at R-30 across every joist bay. Rockwool’s density and moisture resistance made it the right call here, and the homeowner appreciated that we recommended it for the house’s conditions rather than whatever was already on the truck. The attic smelled different the same day. Not perfumed. Just clean.
Garage Ceiling and Band Joist Sealing in Plano
The homeowner called us because the bonus room above the garage in their Plano home was roasting in summer and freezing in winter. Nobody had ever sealed the band joist where the garage ceiling meets the walls, meaning outside air moved straight up into the bonus room floor cavity. We sprayed Demilec closed-cell foam along the entire band joist perimeter and into the knee wall cavities. The bonus room now holds temperature within a degree or two of the rest of the house. It’s not dramatic work to look at. It’s the kind of fix that makes a room usable again.
Cellulose Dense-Pack into Wall Cavities in Carrollton
This 1970s Carrollton home had attic insulation but nothing in the walls. It’s more common than people think, especially in that building era. We drilled from the exterior, dense-packed GreenFiber cellulose into every wall cavity, then patched and painted the holes. The homeowner’s gas bill the following January dropped by nearly a third, and the house is noticeably quieter from street noise. Dense-pack cellulose at the right pressure settles into every stud bay corner. That’s the difference between filling a wall and actually insulating it.
Knee Wall Air Sealing and Batting in Mesquite
Second-story rooms built over a porch have a recurring problem in Mesquite: the knee wall cavities are left open to the soffit, so attic air pours straight into the bedroom. This homeowner’s daughter couldn’t sleep in her own room during summer. We pulled the failing insulation out of the knee wall, foamed every seam and electrical penetration, and re-battened with Knauf R-19, then added a rigid air barrier behind the access door. The room’s temperature swing flattened out within days. Glenn Hartley walked that job himself and still talks about how straightforward it looked from the outside and how broken it was from the inside. Most Dallas insulation problems are like that.
Want Results Like These?
Every one of these projects started with a phone call and a specific complaint about a specific room. We show up, measure the attic, tell you what’s actually wrong, and hand you a written price before any work begins. If you’re tired of a hot upstairs, a cold bonus room, or an energy bill that only goes up, call (469) 916-4622. A real person answers. Every time, day or night.
Written by Glenn Hartley, Owner at Woolsey Insulation Dallas, serving Dallas since 2002.