Insulate your existing walls without tearing them open. Injection foam fills wall cavities completely, cutting energy bills 25-35% and reducing noise by up to 60%.
For decades, insulating the walls of an existing home meant one of two things: live with drafty, under-insulated walls, or tear open the drywall and start over. Injection foam insulation changed all of that. Today, Bo's Insulation can fill your wall cavities with high-performance foam without removing a single piece of drywall or siding. It is the most practical and effective way to insulate the walls of existing homes throughout Oklahoma City, and it is one of the most transformative upgrades we offer to homeowners across the OKC metro.
If your home was built before the mid-1980s, there is a good chance your exterior walls contain little or no insulation. Even homes built in the 1980s and 1990s often have thin fiberglass batts that have sagged, shifted, or compressed over time, leaving large sections of your walls essentially uninsulated. In Oklahoma City, where summer temperatures soar past 100 degrees and winter winds can drop the wind chill well below zero, those empty wall cavities are a major source of energy waste. Homeowners in older neighborhoods throughout Oklahoma City, Edmond, Norman, and Midwest City are especially affected, and injection foam insulation is the solution that finally makes these homes comfortable and efficient.
The injection foam process is surprisingly simple and non-destructive. Here is how our crew installs it in homes across the Oklahoma City area:
We begin by drilling small holes — typically 1 to 2 inches in diameter — into each wall cavity. In most OKC homes, we drill through the exterior siding, which allows us to work entirely from the outside without disrupting your interior. For homes with brick or stone veneer, we drill through the interior drywall instead and patch the holes when finished.
Once the holes are drilled, we insert a specialized injection nozzle into each wall cavity. A slow-rising, tripolymer foam is pumped into the cavity from the bottom up. Unlike spray foam, which expands rapidly and with significant force, injection foam is formulated to flow slowly and gently, working its way around wires, pipes, electrical boxes, and other obstacles inside your walls. It fills the entire cavity without exerting pressure that could damage drywall or siding.
As the foam cures, it forms a solid but slightly flexible insulation that will not shrink, settle, or break down over time. After each cavity is filled, we remove the nozzle, plug the hole, and patch it to match the existing surface. When we are finished, the only evidence of the work is dramatically improved comfort inside your home and lower numbers on your utility bills.
Oklahoma City's housing stock includes thousands of homes built between the 1940s and 1990s — from the charming brick bungalows of Mesta Park and Crown Heights to the ranches and split-levels of Midwest City, Del City, and Moore. Many of these homes were built when insulation standards were far less stringent than today, and their walls contain either inadequate fiberglass batts or no insulation at all.
Injection foam insulation was specifically engineered for this exact situation. It addresses the challenges of retrofitting existing walls without the expense and disruption of demolition:
For homeowners in Yukon, Mustang, and the newer western OKC suburbs, injection foam is also an excellent upgrade even in homes built in the 1990s and 2000s. We frequently find that builder-grade fiberglass batts have shifted or compressed, leaving cold spots and drafts that injection foam eliminates permanently.
Injection foam insulation delivers R-values of R-14 to R-21 in standard wall cavities, depending on the wall depth and foam product used. For a typical 2x4 wall cavity (3.5 inches deep), you can expect approximately R-14. For 2x6 walls (5.5 inches deep), R-values reach approximately R-21. These values meet or exceed the current Department of Energy recommendations for exterior walls in Oklahoma's climate zone.
In terms of real-world energy savings, homeowners across the Oklahoma City metro consistently report 25-35% reductions in their heating and cooling bills after injection foam wall insulation. The savings are especially dramatic in homes that previously had empty wall cavities — some of our customers in older Oklahoma City neighborhoods have told us their utility bills dropped by $100 or more per month during peak summer and winter months.
The energy savings come from two factors working together. First, the foam fills the wall cavity to create a continuous thermal barrier, reducing heat transfer through your walls. Second, by completely filling the cavity, the foam eliminates convective air currents inside the wall — the phenomenon where warm air rises and cold air falls within an empty cavity, accelerating heat loss. Traditional fiberglass batts, even when installed correctly, allow these convective currents to bypass the insulation. Injection foam stops them entirely.
One benefit of injection foam insulation that surprises many Oklahoma City homeowners is the dramatic noise reduction. Empty or poorly insulated wall cavities act like drum skins, amplifying and transmitting outdoor noise into your living space. Injection foam fills those cavities with a solid, sound-absorbing material that reduces exterior noise penetration by up to 60%.
This makes a significant difference for homes near major OKC roads like I-35, I-44, Memorial Road, or NW Expressway. It also helps in neighborhoods with close-set homes, near Will Rogers World Airport flight paths, or anywhere that street noise, lawn equipment, and barking dogs are part of daily life. After injection foam insulation, many of our customers tell us their home feels noticeably quieter — a benefit they were not expecting but truly appreciate.
When you call Bo's Insulation for injection foam insulation in Oklahoma City, we start with a thorough, free home assessment. We inspect your exterior walls, identify the wall construction type and depth, check for any existing insulation, and note the siding material. We may use an infrared camera to identify specific areas of missing or inadequate insulation. Based on our findings, we provide a detailed, honest estimate with no hidden fees.
On installation day, our crew works systematically around the exterior of your home. We drill access holes between each wall stud bay, inject foam into each cavity, and verify that each section is completely filled. The work moves efficiently — we typically complete the exterior walls of a standard Oklahoma City home in a single day. As we finish each section, we plug and patch the holes. For wood and vinyl siding, the patches are virtually invisible. For brick homes, we use matching mortar that blends with the existing surface.
After the installation is complete, we walk you through the finished work and answer any questions. The foam reaches full cure within 24 hours, and you will notice improved comfort and reduced drafts almost immediately. When your next utility bill arrives, you will see the financial benefit too.
Injection foam insulation in the Oklahoma City area typically costs between $2.00 and $3.50 per square foot of wall area. Here are some general guidelines:
The exact cost depends on the total wall area, siding type, wall cavity depth, and accessibility. Brick homes tend to cost slightly more because the drilling and patching process is more labor-intensive. Bo's Insulation provides free, detailed estimates so there are never any surprises.
We drill small holes (1-2 inches) in the exterior siding or interior drywall, then pump slow-rising foam into each wall cavity through a specialized nozzle. The foam flows around wires, pipes, and other obstacles, filling the entire cavity. After injection, we plug and patch the holes. No demolition, no reconstruction — just fully insulated walls.
Injection foam insulation typically costs $2.00-$3.50 per square foot of wall area in the Oklahoma City metro. A whole-home project usually ranges from $3,000 to $8,000 depending on the size of your home and type of siding. We offer free estimates with exact pricing for your specific situation.
If your home has empty or under-insulated wall cavities, injection foam is one of the best investments you can make. Our customers consistently report 25-35% lower energy bills, elimination of drafts and cold spots, and significantly reduced noise. Most homeowners recoup the cost through energy savings within 3-5 years, and the insulation lasts the lifetime of the home.
No. Injection foam is specifically formulated to expand slowly and gently, unlike high-pressure spray foam. It will not crack drywall, buckle siding, or damage any interior or exterior surfaces. Our experienced team has insulated hundreds of homes throughout the OKC area without a single incident of wall or siding damage.
Wall insulation with injection foam is just one piece of a complete home insulation strategy. Bo's Insulation also offers these services for Oklahoma City homeowners:
For the best results, we often recommend combining injection foam wall insulation with attic insulation upgrades. Together, these two improvements address the biggest sources of energy loss in most Oklahoma City homes and deliver the most dramatic improvement in comfort and energy savings.
Bo's Insulation provides injection foam insulation services throughout the Oklahoma City metro area. We serve homeowners in Edmond, Norman, Moore, Yukon, Mustang, Midwest City, Del City, and every community across the OKC area. If your walls are empty, drafty, or under-insulated, call us today for a free estimate and find out how injection foam can transform your home.
Injection foam fills your wall cavities completely — no drywall removal, no mess, no fuss. Get your free estimate today.