Insulation in Oak Lawn, IL
Most insulation work in Oak Lawn centers on one recurring problem: brick ranch homes built between the late 1940s and early 1970s whose wall cavities and attic rafter bays were never insulated to anything close to what Illinois winters demand. Spray foam insulation is the most requested fix because it addresses the shallow rafter bays common on these low-pitch roofs while air sealing at the same time. Call Topside Attic Insulation at (218) 261-7714 for a written price before any work starts.
Why Oak Lawn Homes Are Different
Oak Lawn’s housing stock runs heavily toward single-story brick ranches built between roughly 1948 and the early 1970s. The brick veneer reads as substantial, but behind it sits a 2×4 framed cavity that was often empty from day one or filled with fiberglass batts that have since compacted. The full basement, required by Cook County’s roughly 42-inch frost line, creates a second problem: rim joist cavities at the basement perimeter that leak air straight into the house. We measure this before and after with a blower-door test, a pressurization reading that shows in one number how much conditioned air the building envelope is losing.
Climate compounds the issue. Oak Lawn sits in IECC Climate Zone 5, with average January lows near 16°F and polar vortex events pushing heating demand to extremes. The flat, open terrain offers little windbreak, so any gap in the envelope accelerates convective heat loss. Summer brings upper 80s and 90s°F with high humidity, which means vapor management has to account for moisture drive from both directions. A low-pitch ranch roof in Oak Lawn often leaves rafter bays of only 6 to 8 inches at the eaves. That makes hitting Zone 5’s R-49 attic recommendation physically impossible with blown loose-fill alone without blocking soffit ventilation. Jobs here routinely require spray foam at the roof deck or carefully baffled dense-pack strategies.
Our Main Oak Lawn Services
Two services dominate call volume from Oak Lawn homeowners: attic insulation upgrades on those shallow rafter bays, and crawl space encapsulation for older homes with moisture problems at the foundation perimeter. Here is what each involves locally.
Attic Insulation in Oak Lawn
Most Oak Lawn attics we enter still hold blown fiberglass from the 1980s or compacted batts from the original build, with R-values nowhere near what Zone 5 requires. The job typically starts with air sealing at top plates, can lights, and penetrations before any insulation is added, because blowing over an unsealed attic floor wastes the new material. Attic Insulation in Oak Lawn covers the full scope, from baffled soffit work to dense-packing the tight eaves where blown-in alone cannot reach R-49. We document everything with photos and, on applicable jobs, before-and-after blower-door numbers.
Crawl Space Encapsulation & Vapor Barrier in Oak Lawn
Full basements are standard in Oak Lawn, but crawl spaces appear often enough on additions and split-level variants. The flat terrain and clay-heavy soils hold moisture against foundation walls through spring and after heavy rain, which pushes humidity into floor framing above. Crawl Space Encapsulation & Vapor Barrier in Oak Lawn covers sealing the space with a reinforced vapor barrier, insulating the perimeter, and conditioning the air so the joist bays stop absorbing moisture. Every job starts with a written price, and the crew leaves a photo record of the finished barrier.
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 Oak Lawn
Spray foam insulation in Oak Lawn solves the two problems this housing stock creates: shallow rafter bays that cannot hold enough loose-fill, and brick veneer walls with empty 2×4 cavities. Closed-cell foam at the roof deck hits meaningful R-value in 3 inches of depth while acting as an air and vapor barrier, which is why so many ranch-home owners here end up choosing it after a blower-door test shows how much air the attic is losing. Our work follows the Spray Foam Insulation process: sealed first, then insulated, in that order.
Open-Cell Spray Foam
Signs you need it
You hear the furnace cycling constantly in January, and an upstairs ceiling measures noticeably warmer than the outside wall on a cold day.
What it costs in Oak Lawn
Open-cell foam at the roof deck in Oak Lawn typically runs $1.10 to $1.80 per board foot installed.
How we do it
We prep the attic by sealing penetrations and installing ventilation baffles, then spray open-cell foam directly against the roof deck to the specified depth and verify coverage before the foam cures.
Closed-Cell Spray Foam
Signs you need it
Ice dams form along the roofline after snowfall, and the attic floor shows no visible air leaks but the house still tests high on a blower-door reading.
What it costs in Oak Lawn
Closed-cell foam in Oak Lawn typically runs $0.90 to $1.75 per board foot for wall cavities and $2.20 to $3.20 per board foot at the roof deck.
How we do it
We apply closed-cell foam in lifts, checking thickness against the spec on every section, then take photos of the finished surface before the crew leaves.
Rim Joist Spray Foam
Signs you need it
Your basement stays cold even when the thermostat reads 72°F, and you feel a draft near the top of the basement wall in winter.
What it costs in Oak Lawn
Rim joist sealing and insulation in Oak Lawn typically runs $7 to $10 per linear foot for closed-cell foam to code depth.
How we do it
We remove any existing fiberglass, air seal the rim joist cavities with foam, then apply closed-cell or open-cell foam to the specified depth and photo-document each bay.
What Spray Foam Insulation Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Closed-cell spray foam (wall cavities) | $0.90-$1.75 per board foot |
| Closed-cell spray foam (roof deck) | $2.20-$3.20 per board foot |
| Open-cell spray foam (roof deck) | $1.10-$1.80 per board foot |
Can spray foam be installed in winter in Oak Lawn?
Yes. We run temperature-controlled spray rigs and can apply closed-cell foam down to freezing, though colder days may require staging the work during the warmest part of the day. Call (218) 261-7714 for scheduling details.
Does spray foam on the roof deck hurt shingle life in Oak Lawn?
If the attic is properly ventilated above the foam, no. The problem arises when foam blocks soffit vents without baffles, which overheats the roof deck. We install baffles on every applicable job and document the vent path in photos.
Blown-In Insulation in Oak Lawn
Blown-in insulation in Oak Lawn gets the call when a homeowner wants the biggest thermal improvement for the smallest wall disruption, typically on a brick ranch built before the first energy codes arrived. The catch on these low-pitch roofs is that loose-fill alone cannot always hit Zone 5’s R-49 target at the eaves, so the job often combines blown attic work with a dense-pack or baffle detail near the soffits. Our Blown-In Insulation crews run a pre-fill air seal on every attic floor because insulation over an unsealed deck wastes the material and leaves the blower-door number unmoved.
Blown-In Cellulose
Signs you need it
Your attic insulation is mounded in some areas and nearly bare in others, and the upstairs runs four to five degrees colder than the main floor in winter.
What it costs in Oak Lawn
Blown cellulose in Oak Lawn typically runs $1.50 to $3.00 per square foot for a standard attic fill to R-38 or R-49.
How we do it
We air seal the attic floor first, then blow cellulose through a hose to the specified depth, checking density with a gauge and leveling the fill before taking finish photos.
Dense-Pack Wall Insulation
Signs you need it
Your 1950s brick ranch has hollow-sounding exterior walls when tapped, and the heating bill climbs every January but the attic was topped up recently.
What it costs in Oak Lawn
Dense-pack wall insulation in Oak Lawn typically runs $2.50 to $5.00 per square foot of wall area, depending on access and siding type.
How we do it
We drill access holes through the brick veneer from the exterior, dense-pack cellulose into the wall cavity under pressure to a verified density, then patch and clean the work area.
What Blown-In Insulation Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Blown cellulose (attic, R-38 or R-49) | $1.50-$3.00 per sq ft |
| Blown fiberglass (attic) | $1.20-$2.50 per sq ft |
| Dense-pack wall insulation | $2.50-$5.00 per sq ft of wall area |
How deep does blown insulation need to be in an Oak Lawn attic?
For Zone 5, R-49 requires roughly 15 to 17 inches of blown cellulose or about 18 to 20 inches of blown fiberglass. A low-pitch Oak Lawn roof usually cannot hold that depth at the eaves without baffling or a spray foam alternative at the roof deck.
Can you blow insulation over existing batts in Oak Lawn?
Yes, if the existing batts are dry and uncompressed. We inspect first, and any vermiculite or pest-contaminated material gets removed before new fill goes in. Call (218) 261-7714 for a written price on a top-up.
Radiant Barrier Installation in Oak Lawn
Radiant barrier installation in Oak Lawn makes sense on the low-pitch ranch roofs where mid-summer sun beats directly onto the attic deck and pushes attic temperatures past 140°F. A radiant barrier reflects radiant heat away from the insulation below, cutting the attic temperature enough in July that the upstairs stops feeling ten degrees warmer than the living room. Because the same hot-humid summer moisture threatens the wall assembly, our Radiant Barrier Installation work always accounts for ventilation before any foil goes up, so we are not trapping humidity against the deck as we reflect heat.
Attic Radiant Barrier
Signs you need it
Your air conditioner runs nearly nonstop in July, and the second floor registers 78°F when the thermostat downstairs reads 72°F.
What it costs in Oak Lawn
Attic radiant barrier in Oak Lawn typically runs $0.75 to $1.50 per square foot of attic floor area, installed between rafters or over existing insulation.
How we do it
We confirm soffit and ridge ventilation is clear, install the barrier with an air gap maintained between foil and deck, and photo-document the finished sections.
Radiant Barrier Roof Deck
Signs you need it
The attic is unfinished and open, but the roofline gets direct afternoon sun and the shingles show no ridge-vent airflow at all.
What it costs in Oak Lawn
Roof deck radiant barrier in Oak Lawn typically runs $1.00 to $2.00 per square foot of roof surface when installed against the rafters or deck.
How we do it
We staple the barrier to the rafter faces or underside of the deck, leaving the required air gap, then verify that existing ventilation still functions before we leave.
What Radiant Barrier Installation Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Attic radiant barrier (over insulation) | $0.75-$1.50 per sq ft |
| Roof deck radiant barrier | $1.00-$2.00 per sq ft |
| Radiant barrier with ventilation correction | Adds $0.25-$0.50 per sq ft |
Does a radiant barrier help in an Oak Lawn winter?
Minimally. Radiant barriers address summer radiant heat gain, not winter conductive heat loss. But pairing one with proper attic insulation and air sealing gives you a lower summer cooling load and a tighter winter envelope at the same time.
Will a radiant barrier trap moisture in my Oak Lawn attic?
Only if installed without proper ventilation. We verify soffit and ridge airflow before installation and leave a ventilation map in the photo record we provide after the job.
Insulation Removal & Replacement in Oak Lawn
Insulation removal and replacement in Oak Lawn usually starts with a call from a homeowner opening the attic hatch and finding compacted, mouse-soiled, or vermiculite-bearing material on the floor. The original fiberglass batts on a 1960s brick ranch in Oak Lawn have often been walked on, cut through for wiring, or left damp for years, and the real-world R-value is a fraction of the label. Our Insulation Removal & Replacement crew hauls out the old material, sanitizes where needed, and installs new insulation only after the floor or wall cavity is clean and sealed.
Attic Insulation Removal
Signs you need it
You see a layer of dust and rodent droppings spread across the attic floor, and electrical boxes show tufts of fiberglass or nesting material around them.
What it costs in Oak Lawn
Attic insulation removal in Oak Lawn typically runs $2.00 to $4.00 per square foot, with disposal included in the written price.
How we do it
We set up a negative-pressure vacuum, bag the removed material, clean the deck, and document the bare floor before any new insulation goes in.
Vermiculite & Old Insulation Removal
Signs you need it
The attic holds a pebble-like, grayish material that may date to the original build, and you have never had it tested or removed.
What it costs in Oak Lawn
Vermiculite removal in Oak Lawn typically runs $4.00 to $8.00 per square foot due to containment and handling requirements.
How we do it
We follow a written containment plan, use dedicated vacuums and bagging, and leave the space ready for replacement after the deck is wiped down and checked.
What Insulation Removal & Replacement Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Attic insulation removal | $2.00-$4.00 per sq ft |
| Vermiculite removal | $4.00-$8.00 per sq ft |
| Replacement blown cellulose | $1.50-$3.00 per sq ft |
How do I know if my Oak Lawn attic has vermiculite?
Vermiculite looks like small, shiny, gray-brown pebbles and is sometimes marked with a Zonolite bag tag from older installations. Do not disturb it until it has been checked. Call (218) 261-7714 and we will assess it during a site visit.
Is removal necessary before adding new insulation in Oak Lawn?
Not always. Dry, uncompressed fiberglass or cellulose can be topped up. Contaminated, damp, or pest-damaged material should come out first. We tell you which applies after looking at the attic floor.
Attic Air Sealing in Oak Lawn
Attic air sealing in Oak Lawn is the prerequisite we will not skip because the brick ranch stock here leaks air at the attic floor more than anywhere else in the envelope. A blower-door test on a 1950s ranch in Oak Lawn commonly reads 4,000 CFM50 or higher before sealing, and after top plates, can lights, and penetrations are closed the number drops by a third or more. Our Attic Air Sealing crew seals the attic floor before any insulation is added, never after, because you cannot reach the leaks once loose-fill is down.
Top Plate & Penetration Sealing
Signs you need it
You feel cold air cascading down from the attic hatch on a winter evening, and the edges of the upstairs rooms stay colder than the centers.
What it costs in Oak Lawn
Top plate and penetration sealing in Oak Lawn typically runs $1.50 to $3.00 per square foot of attic floor area, depending on access.
How we do it
We locate every top plate, chase, and penetration with a thermal camera, seal each with foam or caulk, then re-run the blower-door test to confirm the improvement.
Can Light & Duct Boot Sealing
Signs you need it
Recessed can lights in the upstairs ceiling glow warm in winter and pull air up from the living space through the fixture housing.
What it costs in Oak Lawn
Can light and duct boot sealing in Oak Lawn typically runs $15 to $35 per fixture or boot, including the approved cover or sealant.
How we do it
We install rated covers over the cans, seal the boot-to-drywall joint with mastic and foam as appropriate, and mark each fixture in the written scope.
What Attic Air Sealing Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Top plate and penetration sealing | $1.50-$3.00 per sq ft of attic floor |
| Can light sealing | $15-$35 per fixture |
| Attic hatch sealing | $75-$150 per hatch |
Why does Oak Lawn housing stock leak so much air at the attic floor?
Postwar brick ranches were built before air sealing was part of the code, so every wall top plate, wire chase, and plumbing vent penetrates the attic floor as an open channel. Add a full basement, and the stack effect pulls cold air in through rim joists and out through the attic.
Will air sealing make my Oak Lawn house too tight?
No. Attic floor sealing addresses one plane of the envelope, not the whole house. The blower-door number will drop, but mechanical ventilation is not typically needed unless the house tests extremely tight, which is rare in this stock. Call (218) 261-7714 for a blower-door assessment.
Wall Insulation in Oak Lawn
Wall insulation in Oak Lawn is nearly always a retrofit job on a brick ranch whose 2×4 wall cavities were empty from construction or hold batts that have slid, compressed, or been chewed through. The brick veneer makes the house look solid, but it does not insulate, and with January lows near 16°F the exterior walls lose heat fast through uninsulated cavities. Our Wall Insulation crew works from the exterior through the brick, or from the interior where siding or drywall removal is already planned, and we photograph every access hole before patching.
Drill & Fill Wall Insulation
Signs you need it
A hand on the inside face of an exterior wall on a cold morning feels as cool as the window glass, and the room never holds heat long after the furnace cycles off.
What it costs in Oak Lawn
Drill-and-fill wall insulation in Oak Lawn typically runs $2.50 to $5.00 per square foot of exterior wall area.
How we do it
We drill access holes in the mortar joints or through the sheathing, dense-pack the cavity under pressure to a verified density, and patch the holes to match.
Injection Foam Wall Insulation
Signs you need it
Small gaps around outlets show daylight or let in drafts, and the exterior brick has voids behind it that batts cannot fill.
What it costs in Oak Lawn
Injection foam wall insulation in Oak Lawn typically runs $3.00 to $7.00 per square foot of wall area.
How we do it
We inject slow-rise foam through small openings, letting it expand to fill irregular cavities, then trim, patch, and verify coverage with a thermal camera.
What Wall Insulation Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Drill-and-fill cellulose or fiberglass | $2.50-$5.00 per sq ft |
| Injection foam | $3.00-$7.00 per sq ft |
| Interior wall soundproofing | $1.50-$3.00 per sq ft |
Can walls be insulated from outside in Oak Lawn without removing brick?
Yes, in most cases. We drill through the mortar joints, fill the cavity, and patch the joints to match the surrounding brick. The job produces no interior demolition and the exterior finish is documented in photos when we leave.
Will wall insulation stop drafts in my Oak Lawn ranch?
Insulation slows conductive heat loss; air sealing stops drafts. The rim joists, top plates, and outlet boxes all need sealing as part of the same scope. Call (218) 261-7714 for a combined price.
Attic Cleaning & Rodent Proofing in Oak Lawn
Attic cleaning and rodent proofing in Oak Lawn deals with a problem the low ranch rooflines make worse: gaps at roof-wall intersections and gable ends that mice and squirrels use as highways. Once rodents nest in insulation, the material is contaminated beyond simple top-up, so removal, sanitizing, and exclusion have to happen before any new insulation goes in. Our Attic Cleaning & Rodent Proofing crew maps every entry point from inside the attic and outside at the roofline, then closes them in a documented sequence.
Attic Cleanout
Signs you need it
You hear scratching overhead at dusk, and a flashlight sweep of the attic floor shows droppings, nesting piles, or shredded insulation pulled into burrows.
What it costs in Oak Lawn
A full attic cleanout in Oak Lawn typically runs $2.50 to $5.00 per square foot, with disposal and optional sanitizing included in the written price.
How we do it
We remove contaminated material with a vacuum system, bag it, and clean the deck down to the sheathing before inspecting for entry points.
Rodent Proofing & Exclusion
Signs you need it
You find new droppings within weeks of the last cleanup, and the roofline shows gaps where the brick meets the soffit or fascia.
What it costs in Oak Lawn
Rodent proofing in Oak Lawn typically runs $300 to $800 for a typical ranch attic, depending on how many entry points are closed.
How we do it
We seal openings with metal flashing, hardware cloth, and foam as appropriate, then document each closed entry point with a photo before the new insulation goes in.
What Attic Cleaning & Rodent Proofing Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Attic cleanout | $2.50-$5.00 per sq ft |
| Sanitizing and decontamination | $0.50-$1.50 per sq ft |
| Rodent proofing and exclusion | $300-$800 per typical ranch attic |
Do I need to replace insulation after rodent removal in Oak Lawn?
Almost always. Urine and droppings in fiberglass or cellulose cannot be sanitized to a safe level for continued use. We remove the contaminated material, sanitize the deck, seal entries, and install new insulation in one scope.
How soon can you start on an Oak Lawn attic rodent problem?
Usually within a few days. The first visit is an assessment with a written price, then the removal and sealing are scheduled. Call (218) 261-7714 and a live person picks up 24/7.
Home Energy Audit in Oak Lawn
A home energy audit in Oak Lawn gives you the number that explains everything else: the blower-door CFM50 reading that shows how much conditioned air your 1950s brick ranch is losing every hour. We also shoot the interior and exterior with a thermal camera to find the specific leaks and missing insulation, then hand you a written report with the data, not just a list of suggestions. Our Home Energy Audit process is the same one we run on our own insulation jobs, so the numbers line up before and after work.
Blower Door Test
Signs you need it
Your heating bills climb every winter regardless of thermostat settings, and no one has ever measured how much air the house actually leaks.
What it costs in Oak Lawn
A standalone blower-door test in Oak Lawn typically runs $250 to $450, and the fee is credited when you proceed with insulation work.
How we do it
We mount the blower door in an exterior frame, depressurize the house to 50 pascals, and record the CFM50 reading along with the leak locations found during the test.
Thermal Imaging Inspection
Signs you need it
Rooms at opposite ends of the house run five or more degrees apart, and you suspect missing wall insulation but want proof before opening anything.
What it costs in Oak Lawn
A thermal imaging inspection in Oak Lawn typically runs $200 to $400 when scheduled as a standalone service.
How we do it
We scan every exterior wall, ceiling, and basement perimeter with a thermal camera, mark the anomalies, and deliver the images in a written report with the blower-door number beside them.
What Home Energy Audit Costs in Oak Lawn
| Item | Typical range in Oak Lawn |
|---|---|
| Blower-door test (standalone) | $250-$450 |
| Thermal imaging inspection | $200-$400 |
| Full audit (blower door + thermal + report) | $450-$750 |
Do I need an energy audit before insulating my Oak Lawn home?
Not always, but it changes what gets done. A blower-door reading before and after tells you exactly how much air sealing changed the house. Every applicable insulation job we do includes before-and-after numbers as part of the scope.
Can the audit tell me if my Oak Lawn walls are insulated?
Yes. Thermal imaging through the brick veneer shows the cavity temperature pattern, and a trained eye can read whether insulation is present and where it has settled. The images go into your written report.
Brands We Service in Oak Lawn
We install materials from Johns Manville, Knauf, CertainTeed, and Rockwool, and we stock common attic and wall product lines for quick Oak Lawn turnaround. Our brands page lists the full line. Most orders for Oak Lawn jobs arrive within one to three business days.
Pricing for Insulation in Oak Lawn, IL
| Service | Typical range in Oak Lawn |
|---|---|
| Closed-cell spray foam (roof deck) | $2.20-$3.20 per board foot |
| Open-cell spray foam (roof deck) | $1.10-$1.80 per board foot |
| Blown cellulose (attic) | $1.50-$3.00 per sq ft |
| Dense-pack wall insulation | $2.50-$5.00 per sq ft |
| Attic insulation removal | $2.00-$4.00 per sq ft |
| Vermiculite removal | $4.00-$8.00 per sq ft |
| Attic air sealing (top plates) | $1.50-$3.00 per sq ft |
| Drill-and-fill wall insulation | $2.50-$5.00 per sq ft |
| Attic radiant barrier | $0.75-$1.50 per sq ft |
| Attic cleanout | $2.50-$5.00 per sq ft |
| Blower-door test | $250-$450 |
Prices in Oak Lawn push upward when a job involves vermiculite, a tight attic with no standing room, or brick veneer that requires more access holes than typical. Every price we give is a written flat number before any work starts, per Haven Standard Clause 1, so the range on this page becomes a fixed quote on your house the day we assess it.
Neighborhoods We Serve in Oak Lawn
We work across Oak Lawn’s residential grid, with most jobs clustered in the ranch-home blocks around 95th Street, Cicero Avenue, and the streets east of Harlem Avenue. The map of our work follows the postwar plats, not any single subdivision.
- Oak Lawn Gardens
- Dearborn Heights
- Kolmar
- St. Gerald
- Bogan
Response time across Oak Lawn is typically same-day to next-day for assessment visits, and emergency calls are answered by a live person 24/7.
Service Area - Cities Near Oak Lawn
Our crews serve Orland Park, IL for newer-stock homes that need attic top-ups and energy audits, plus Chicago, IL for bungalow and flat-roof work. We also run jobs in Naperville, IL and Skokie, IL when homeowners need the same written-price, blower-door-documented approach. Scheduling for Oak Lawn is coordinated from the Chicago office; the crews live locally.
Serving Oak Lawn, IL - Our Local Coverage Area
We’re based in the Oak Lawn 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 Oak Lawn
Most attic insulation, air sealing, and wall retrofit work in Oak Lawn does not require a permit, but some spray foam roof deck applications may trigger a building inspection. We tell you during the assessment and list any permits in the written scope before work starts.
Same day in nearly all cases. A live person answers our line 24/7, and assessment visits in Oak Lawn are typically scheduled the day you call or the next morning. Call (218) 261-7714 and you will not hit a voicemail loop.
Yes. Every Oak Lawn estimate is free, and you receive a written flat price with a written scope before any work starts. Under Haven Standard Clause 1, no tool gets lifted without that document in your hand.
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 within 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What Oak Lawn Customers Say
"They air-sealed the attic floor before insulating and showed me the blower-door number before and after. The upstairs is finally the same temperature as downstairs."
- Marisol D."Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
- Ainsley P."The winter gas bill dropped by about a third. They had estimated a quarter, so they under-promised."
- Genevieve R.