Insulation in Lake Los Angeles, CA
The right insulation in Lake Los Angeles has to handle a swing from 20-degree winter nights to 105-degree summer afternoons, often inside the same month. Most homes here were built between the 1960s and 1990s with thin factory batts that have compressed, settled, or never been upgraded. Spray foam is the workhorse solution for this climate because it air-seals and insulates in one pass, which matters when the Antelope Valley wind is pushing through every gap in the building envelope. Prime Insulation Lancaster has served Lake Los Angeles since 2014. Call (661) 545-6966 for a free estimate.
Why Lake Los Angeles Homes Are Different
Lake Los Angeles sits at roughly 2,700 feet in the Mojave Desert, which means a seasonal temperature spread of 130 degrees or more. That is not a coastal Los Angeles problem. Attics here bake at 140 degrees in July and freeze in January, so insulation has to perform in both directions all year, not just keep heat in during a mild winter.
The housing stock is mostly manufactured homes, mobile homes, and modest stick-built houses from the 1970s through the 1990s. Many still have their original belly-board insulation, which sags, absorbs moisture, and gets shredded by rodents. Air leaks through skirting, marriage-wall joints, and belly-board seams are the rule, not the exception. That is why experienced contractors in Lake Los Angeles know the highest-impact first step is air-sealing the floor system and duct belly before adding R-value. Blow insulation into a leaky floor cavity and you are just filtering the desert wind through more material.
This is not a discretionary upgrade market. It is a remediation market. The homes were under-insulated from day one, and decades of heat, dust, and pest intrusion have only made it worse.
Our Main Lake Los Angeles Services
Most Lake Los Angeles homeowners call us first about two problems: attics that are transferring heat straight into the living space, and crawl spaces that are pulling moisture and dust up through the floor. Here is what each involves.
Attic Insulation in Lake Los Angeles
In a manufactured home with a shallow attic cavity, dense-packed or blown-in insulation usually makes more sense than batts, which never fit cleanly around trusses and ducts. We inspect the existing material, check for rodent damage and air leaks, then recommend the right product. On a July afternoon in Lake Los Angeles, a properly insulated attic is the difference between a livable bedroom and a room you avoid until midnight. Attic Insulation in Lake Los Angeles gets its own page because the process here is different from a standard tract home.
Crawl Space Encapsulation & Vapor Barrier in Lake Los Angeles
Manufactured homes in Lake Los Angeles often sit over open crawl spaces or dirt pads. In winter, cold air moves up through the floor. In summer, hot, dusty air does the same thing, only in reverse. Encapsulation seals the floor system with a vapor barrier and insulated panels, keeping ground moisture out of the belly and stopping the stack effect that pulls outdoor air into the living space. Crawl Space Encapsulation & Vapor Barrier in Lake Los Angeles covers the details, including the skirting and marriage-wall seams most contractors ignore.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Spray Foam Insulation in Lake Los Angeles
Spray foam is the most requested insulation in Lake Los Angeles because it is the only material that air-seals and insulates at the same time. In a manufactured home with a vented belly and leaky marriage wall, open-cell foam can fill irregular cavities that batts simply cannot reach. Air sealing is automatic with spray foam, which matters when the Antelope Valley wind is blowing 30 mph through every seam in the building envelope. Unlike fiberglass batts, closed-cell foam adds structural rigidity and blocks moisture driven by the seasonal humidity swings common to high-desert homes. Spray Foam Insulation is the product line we use most often for problem cavities in Lake Los Angeles.
Open-Cell Spray Foam
Signs you need it
You feel drafts near the floor in winter and the interior walls are warm to the touch in summer. Open-cell foam is also the right call when you need air sealing in tight, oddly shaped cavities where batts cannot expand to fit.
What it costs in Lake Los Angeles
Open-cell spray foam typically runs $0.44 to $0.65 per board foot installed, and a full manufactured-home attic usually lands between $2,200 and $4,000 depending on cavity depth and access.
How we do it
We seal the work area, then spray the foam into the cavity until it reaches the target thickness. The foam expands to fill gaps, hardens within minutes, and air-seals every seam it touches.
Closed-Cell Spray Foam
Signs you need it
Your crawl space or rim joist stays damp in winter and collects dust in summer. Closed-cell foam also helps when you need the highest R-value per inch in a shallow cavity.
What it costs in Lake Los Angeles
Closed-cell foam runs $0.75 to $1.05 per board foot installed, and a rim joist package for a typical manufactured home runs $1,100 to $2,500.
How we do it
We apply the foam in passes to control thickness, then trim and verify coverage. Closed-cell foam forms a rigid, moisture-resistant barrier that also strengthens the framing it contacts.
What Spray Foam Insulation Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Open-cell spray foam (per board foot) | $0.44 – $0.65 |
| Closed-cell spray foam (per board foot) | $0.75 – $1.05 |
| Full attic spray foam package | $2,200 – $4,000 |
| Rim joist spray foam package | $1,100 – $2,500 |
Does spray foam make sense for a manufactured home in Lake Los Angeles?
Yes. Spray foam is often the only material that fills the irregular cavities of a manufactured home’s belly, marriage wall, and duct chases. It air-seals those spaces while insulating, which addresses the two biggest energy robbers in this housing stock.
How long does spray foam last in the high desert?
Spray foam will outlast the framing it is applied to. It does not sag, settle, or lose R-value over time, and it is not eaten by rodents the way fiberglass is. The key is getting the foam depth right the first time. Call (661) 545-6966 for an exact quote.
Blown-In Insulation in Lake Los Angeles
Blown-in insulation is the fastest, cleanest way to bring an older Lake Los Angeles attic up to modern R-value. In a 1970s manufactured home with shallow, tight attic access, blowing cellulose or fiberglass into the cavity is often far easier than wrestling batts through a small hatch. The material flows around ducts, wires, and framing, filling the weird angles common to older mobile homes. Blown-In Insulation also settles into the gaps where compressed original batts have failed.
Blown-In Cellulose
Signs you need it
Your attic insulation is thin, uneven, or has visible gaps around the eaves. Cellulose is dense and packs well into irregular cavities, and it resists the air movement that plagues fiberglass in windy areas like Lake Los Angeles.
What it costs in Lake Los Angeles
Blown-in cellulose runs roughly $0.35 to $0.60 per square foot installed for a standard attic depth, and a full attic topping in Lake Los Angeles typically lands between $1,600 and $3,200.
How we do it
We run a hose to the attic, blow the cellulose to the target depth, and check for even coverage with a depth gauge before we finish.
Blown-In Top-Up
Signs you need it
The existing insulation is still in fair shape but the depth is well below current R-value recommendations. A top-up is the least expensive way to cut both heating and cooling bills year-round.
What it costs in Lake Los Angeles
A blown-in top-up runs about $0.50 to $0.90 per square foot installed depending on the depth needed to meet the target R-value.
How we do it
We verify the existing material is clean and dry, then blow new material over it until the combined depth meets the target R-value for this climate. It usually takes a few hours for a manufactured home.
What Blown-In Insulation Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Blown-in cellulose (per square foot) | $0.35 – $0.60 |
| Blown-in top-up (per square foot) | $0.50 – $0.90 |
| Full attic blown-in package | $1,600 – $3,200 |
Is blown-in insulation enough for 20-degree winter nights?
Yes, if the depth is right. R-38 to R-49 is the common target for attic floors in this climate, and blown-in material reaches that easily. Air sealing first is still the most important step. Call (661) 545-6966 for specifics on your attic.
How long does a blown-in insulation job take in Lake Los Angeles?
Most manufactured-home attics are done in half a day. The limiting factor is usually attic access and the condition of the existing material, which we evaluate before we start.
Radiant Barrier Installation in Lake Los Angeles
Radiant barrier is the one retrofit that directly attacks the 140-degree attic temperatures that cook Lake Los Angeles homes all summer. A foil-faced radiant barrier installed on the attic roof deck reflects radiant heat before it ever reaches the insulation below. In a climate where the attic is often the single biggest heat load on the house, this can reduce cooling costs more than adding another layer of insulation. Radiant Barrier Installation pairs well with blown-in material because the two products solve two different heat paths.
Attic Radiant Barrier
Signs you need it
The upstairs rooms stay hot long after sunset and the air conditioner runs constantly in July and August. That heat is mostly radiant energy beaming down from the roof deck.
What it costs in Lake Los Angeles
Attic radiant barrier installation runs about $1.50 to $2.50 per square foot of roof deck covered, and a typical manufactured-home attic in Lake Los Angeles lands between $1,400 and $2,800.
How we do it
We staple the foil to the underside of the roof rafters, leaving an air gap on the foil side. That gap is the key: it is what allows the barrier to reflect heat instead of conducting it through.
Radiant Barrier & Ventilation
Signs you need it
Your attic is unbearably hot in summer but also traps moisture in winter. Radiant barrier needs to be paired with proper ventilation so the heat it reflects off the roof deck has somewhere to go.
What it costs in Lake Los Angeles
Adding or upgrading ventilation alongside a radiant barrier runs roughly $0.80 to $1.50 per square foot on top of the barrier cost, depending on the roof layout.
How we do it
We check existing attic ventilation, then install or add soffit and ridge vents as needed before stapling the barrier. Without ventilation, the reflected heat just builds pressure against the roof deck.
What Radiant Barrier Installation Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Radiant barrier (per square foot) | $1.50 – $2.50 |
| Ventilation add-on (per square foot) | $0.80 – $1.50 |
| Typical attic package | $1,400 – $2,800 |
Does a radiant barrier work in the winter too?
It works year-round. In winter the barrier reflects heat back down into the living space instead of letting it radiate through the roof. The effect is smaller than in summer, but it is real.
Can you install a radiant barrier in an attic with blown-in insulation?
Yes. The radiant barrier goes on the roof deck, and the blown-in insulation stays on the attic floor. They do not interfere with each other, and in Lake Los Angeles the combination is often the best retrofit. Call (661) 545-6966 to get a price for your roof pitch.
Insulation Removal & Replacement in Lake Los Angeles
Most insulation in Lake Los Angeles was installed decades ago and has been through dust storms, rodents, and a half century of temperature swings. That means removal and replacement is often the only real fix, not a nice upgrade. Old fiberglass batts that have been compressed, soaked, or shredded do not perform at any R-value. Insulation Removal & Replacement is the step we recommend before adding new material over the top of a failing system, because new insulation over old problems just buries the problem.
Attic Insulation Removal
Signs you need it
The existing insulation is visibly broken down, wet in places, or has rodent droppings mixed through it. Old attic material in manufactured homes often carries decades of accumulated dust and pest activity.
What it costs in Lake Los Angeles
Attic insulation removal runs about $0.60 to $1.20 per square foot, and a typical manufactured-home attic in Lake Los Angeles lands between $1,000 and $2,200.
How we do it
We use a commercial vacuum to pull the old material out, then inspect the attic cavity for air leaks, wiring issues, and pest damage before anything new goes in.
Contaminated Insulation Removal
Signs you need it
The insulation has been soaked by a roof leak, saturated with rodent urine, or is heavily dust-laden. This material needs to come out for health reasons, not just performance reasons.
What it costs in Lake Los Angeles
Contaminated insulation removal adds roughly $0.20 to $0.40 per square foot for sanitizing and disposal, on top of the standard removal rate.
How we do it
We bag and remove the contaminated material, treat the cavity with a sanitizing agent, and let the area dry fully before new insulation is installed.
What Insulation Removal & Replacement Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Attic insulation removal (per square foot) | $0.60 – $1.20 |
| Contaminated removal add-on (per square foot) | $0.20 – $0.40 |
| Full removal package | $1,000 – $2,200 |
Is it cheaper to just blow new insulation over old?
It is cheaper up front, but if the old material is wet, rodent-damaged, or badly compressed, you are paying to bury a problem that will keep costing you. Removal first is the correct sequence for real performance. Call (661) 545-6966 and we will tell you honestly which route makes sense for your attic.
How do I know if my old insulation needs to come out?
Look for moisture stains on the ceiling, signs of rodent activity, or insulation that is visibly flattened and gray. Any one of those means the material is not doing its job and probably should be removed before anything new goes in.
Attic Air Sealing in Lake Los Angeles
Air sealing is the step that makes insulation actually work. In Lake Los Angeles, where the Antelope Valley wind drives outdoor air through every crack, a well-insulated but leaky attic still costs a fortune to cool. Most heat loss and heat gain in these homes moves through the attic floor, not the roof. Attic Air Sealing closes the bypasses before new material goes in, because blowing insulation over unsealed penetrations just turns your new material into a filter for the wind.
Attic Floor Air Sealing
Signs you need it
You can feel air moving near the attic hatch, or the house is dusty no matter how often you clean. Dust in a home is usually attic air being pulled through the ceiling plane.
What it costs in Lake Los Angeles
Attic floor air sealing runs roughly $0.30 to $0.60 per square foot of attic floor, and a typical manufactured-home attic in Lake Los Angeles lands between $450 and $1,100.
How we do it
We seal every penetration in the attic floor with foam or caulk: wiring holes, plumbing chases, chimney gaps, and the seams where walls meet the ceiling.
Can Light & Duct Boot Sealing
Signs you need it
Your recessed lights are warm to the touch in summer, or you feel drafts around ceiling vents. Both are direct paths for attic air to enter the living space.
What it costs in Lake Los Angeles
Sealing can lights and duct boots runs about $25 to $50 per fixture in Lake Los Angeles, depending on access and fixture type.
How we do it
We install sealed covers over non-IC-rated can lights and seal the gap between duct boots and the ceiling drywall with mastic and foam. This closes the holes that air pressure constantly wants to pull.
What Attic Air Sealing Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Attic floor air sealing (per square foot) | $0.30 – $0.60 |
| Can light & duct boot sealing (per fixture) | $25 – $50 |
| Typical attic air sealing package | $450 – $1,100 |
Should I air seal before or after insulating?
Always before. Sealing first means the insulation goes in over a closed building plane. Sealing after means pulling insulation out of the way, doing the work, then putting it back – twice the labor. We air seal first, then insulate.
How much energy does attic air sealing actually save?
In a manufactured home in Lake Los Angeles, air sealing alone often cuts heating and cooling bills by 15 to 25 percent before any new insulation goes in. The two together are the most cost-effective retrofit. Call (661) 545-6966 to schedule an assessment.
Wall Insulation in Lake Los Angeles
Most Lake Los Angeles homes have thin 2×4 walls with fiberglass batts that were never installed to fill the cavity cleanly. Add forty years of settling and the Antelope Valley wind, and the walls are effectively uninsulated in many places. Since most of the housing stock here has exterior siding rather than stucco, drill-and-fill access is often easier than in a standard tract home. Wall Insulation can be done from the exterior or the interior depending on the siding type and the access to each wall cavity.
Drill & Fill Wall Insulation
Signs you need it
The interior walls are cold to the touch in winter and warm in summer, and the furnace runs constantly on windy days. This is the classic sign of empty or under-filled wall cavities in an older manufactured home.
What it costs in Lake Los Angeles
Drill-and-fill wall insulation runs roughly $1.50 to $3.00 per square foot of wall area in Lake Los Angeles, depending on siding type and cavity depth.
How we do it
We drill access holes from the exterior, fill each cavity with cellulose or injection foam, then plug and finish the holes so they disappear back into the siding.
Injection Foam Wall Insulation
Signs you need it
There is little or no insulation in the wall, and you want the air-sealing benefit of foam inside the cavity. Injection foam fills tighter and performs better than cellulose in windy locations.
What it costs in Lake Los Angeles
Injection foam wall insulation runs about $1.80 to $3.00 per square foot of wall area installed in Lake Los Angeles.
How we do it
We inject slow-rising foam into the cavity through small access holes. The foam expands to fill the cavity completely, air-sealing as it goes, and trims off flush to the siding.
What Wall Insulation Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Drill & fill (per square foot) | $1.50 – $3.00 |
| Injection foam (per square foot) | $1.80 – $3.00 |
| Typical wall package (1,200 sq ft home) | $3,000 – $6,500 |
Can you insulate the walls of an older manufactured home without tearing out drywall?
Yes. Drill-and-fill and injection foam both access the wall cavity through small exterior holes. The drywall stays intact. The exterior siding gets patched cleanly, and the wall is insulated behind it. Call (661) 545-6966 to find out what your siding type allows.
Which walls matter most in Lake Los Angeles?
West-facing and south-facing walls take the heaviest beating from the desert sun in summer, and the north-facing wall loses the most heat in winter. We usually recommend starting with the walls that face the load before doing the rest.
Attic Cleaning & Rodent Proofing in Lake Los Angeles
Rodents are a fact of life in the high desert around Lake Los Angeles, and manufactured homes are particularly easy for them to enter. We regularly find attics full of droppings, shredded insulation, and chewed wiring in homes that look perfectly clean from the outside. New insulation installed over that environment is wasted money. Attic Cleaning & Rodent Proofing restores the attic before new material goes in, and it is the main reason our insulation jobs last.
Rodent Proofing & Exclusion
Signs you need it
You hear scratching in the ceiling at night, see droppings around the attic hatch, or smell a musky odor near return vents. Any one of these means rodents have already established a route in.
What it costs in Lake Los Angeles
Rodent proofing and exclusion runs about $250 to $600 for a typical manufactured home in Lake Los Angeles, depending on the number of entry points and the access around the foundation.
How we do it
We identify every entry point, seal them with steel mesh and foam, then set up monitoring to confirm the route is closed before any new insulation is installed.
Attic Sanitizing & Decontamination
Signs you need it
The attic has visible droppings, heavy dust, or an odor that does not go away. Rodent and pest waste carries pathogens that stay active in the dust long after the animals are gone.
What it costs in Lake Los Angeles
Attic sanitizing and decontamination runs roughly $0.50 to $1.00 per square foot on top of removal costs in Lake Los Angeles.
How we do it
After removing contaminated insulation, we treat the attic floor and framing with a sanitizing agent, then ventilate the space until it is dry and safe to work in for the next step.
What Attic Cleaning & Rodent Proofing Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Rodent proofing & exclusion | $250 – $600 |
| Attic sanitizing (per square foot) | $0.50 – $1.00 |
| Full cleanout + proofing package | $1,200 – $2,500 |
Should I clean the attic before or after rodent proofing?
Proof first, then clean, then insulate. If you clean before sealing entry points, new rodents move right back in and you start over. We always close the routes, remove the waste, then install new material. Call (661) 545-6966 to schedule an attic inspection.
Can rodent damage affect my insulation warranty?
Yes. Most insulation manufacturers will not cover material that has been damaged by pests, which is why exclusion work matters before installation. A rodent-proofed attic protects the investment in the new insulation.
Home Energy Audit in Lake Los Angeles
A home energy audit in Lake Los Angeles tells you exactly where the desert heat and winter cold are getting in, and in what order to fix it. We do not recommend insulation until we have measured the actual air leakage and found the thermal weak points with an infrared camera. The audit is the diagnostic step that makes every subsequent dollar count. Home Energy Audit is available as a standalone service, and it often changes the plan from what the homeowner expected.
Blower Door Test
Signs you need it
Your energy bills are consistently high but you cannot figure out where the air is moving. The blower door quantifies the total leakage in the house and shows us where the worst gaps are.
What it costs in Lake Los Angeles
A blower door test runs about $200 to $400 as part of a full home energy audit in Lake Los Angeles.
How we do it
We mount a calibrated fan in an exterior door frame, depressurize the house, and measure how much air moves through the fan. That number tells us the total leakage, and the pressure diagnostics point to the biggest holes.
Thermal Imaging Inspection
Signs you need it
Certain rooms are always colder or hotter than the rest of the house, or you suspect missing insulation in a wall but cannot confirm it. Infrared shows us exactly where the thermal breaks are.
What it costs in Lake Los Angeles
A thermal imaging inspection runs about $150 to $300 as a standalone, or it is included in a full audit.
How we do it
We walk the interior and exterior with an infrared camera while the house is under pressure from the blower door. The camera shows the exact location of missing insulation, air leaks, and thermal bridges.
What Home Energy Audit Costs in Lake Los Angeles
| Item | Typical range in Lake Los Angeles |
|---|---|
| Full home energy audit | $300 – $600 |
| Blower door test (standalone) | $200 – $400 |
| Thermal imaging inspection | $150 – $300 |
What does a home energy audit actually find in a Lake Los Angeles home?
Usually three things: a leaky attic floor, an unsealed belly or crawl space, and walls with far less insulation than the homeowner assumed. The audit ranks the fixes by return on investment so you know what to do first. Call (661) 545-6966 to book one.
Is a home energy audit worth it before I insulate?
Yes. An audit costs a small fraction of the insulation job and often shows that the real problem is air leaks, not missing R-value. Insulating without an audit is guessing, and guessing in this climate is expensive.
Brands We Service in Lake Los Angeles
We install and service insulation from GreenFiber, Owens Corning, and Knauf, covering cellulose, fiberglass, and mineral wool product lines. Common replacement materials are stocked locally for fast turnaround. Our brands page lists the full portfolio.
Pricing for Insulation in Lake Los Angeles, CA
| Service | Typical range in Lake Los Angeles |
|---|---|
| Spray foam insulation (attic package) | $2,200 – $4,000 |
| Blown-in insulation (full attic) | $1,600 – $3,200 |
| Radiant barrier (attic package) | $1,400 – $2,800 |
| Insulation removal (per square foot) | $0.60 – $1.20 |
| Attic air sealing (package) | $450 – $1,100 |
| Wall insulation (per square foot) | $1.50 – $3.00 |
| Rodent proofing & exclusion | $250 – $600 |
| Home energy audit | $300 – $600 |
Prices in Lake Los Angeles rise with attic access difficulty, the condition of existing material, and the amount of rodent or moisture damage that needs remediation first. We give an upfront price after the assessment, not a range that changes when the crew shows up.
Neighborhoods We Serve in Lake Los Angeles
Prime Insulation Lancaster works throughout Lake Los Angeles, including the older subdivided lots near East Avenue Q and Lake Los Angeles Avenue, the manufactured-home communities off 170th Street, and the larger desert lots further out toward the foothills.
- Lake Los Angeles Avenue corridor
- East Avenue Q subdivisions
- 170th Street manufactured home communities
- Desert foothill lots near Avenue T
Most Lake Los Angeles jobs can be scheduled within a week, and emergency attic or rodent work is often available faster.
Service Area — Cities Near Lake Los Angeles
Prime Insulation Lancaster also serves the surrounding Antelope Valley communities. Our team is based in Lancaster, CA and regularly works in Quartz Hill, CA, Leona Valley, CA, and Acton, CA.
Serving Lake Los Angeles, CA — Our Local Coverage Area
We’re based in the Lake Los Angeles area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About Insulation in Lake Los Angeles
We schedule most Lake Los Angeles jobs within three to five business days. Emergency attic work, like active rodent entry or water-damaged insulation, can often be pushed sooner based on crew availability. Call (661) 545-6966 and we will give you a real date.
Most insulation retrofits do not require a permit in unincorporated Lake Los Angeles, but jobs involving structural changes like crawl space encapsulation may. We will tell you if a permit applies to your specific scope before we start.
Yes, that is the majority of the housing stock in Lake Los Angeles and the majority of our work. We are set up for the access, cavity, and belly-board challenges specific to manufactured homes, which most standard insulation contractors are not.
Call Prime Insulation Lancaster at (661) 545-6966 for a free estimate on any insulation project in Lake Los Angeles. The person who quotes the job is the person who does the work.
What happens when you call
- 1A real person answersNo phone trees — talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically same-day.
- 4You approve before work beginsNothing starts until you say go.
What Lake Los Angeles Customers Say
"Work is good and the house is noticeably more comfortable. There was insulation debris left in the hall closet under the attic access that I had to clean up."
— Miguel Martinez"Solid job. It's hard to verify what's up there once they've gone, so I'd suggest asking for photos, which they did provide when I asked but didn't offer."
— Justin Kim"Attic was at maybe R-11 from the 1970s and blown in over the top would have just buried the problem. They removed the old material, air sealed the top plates and penetrations first, then blew in to R-49. The upstairs is a completely different house in August."
— Paige Ziegler