Loading...
Serving Marion, IL and surrounding areas. (618) 422-0172
Marion Insulation handles spray foam, attic, blown-in, crawl space, and whole-home insulation for homeowners across southern Illinois. One call, honest estimate, work done right.
Marion Insulation is the insulation contractor Marion, IL homeowners call when heating and cooling bills get out of hand - or when older homes just never feel comfortable. We offer 16 insulation services, from spray foam and attic insulation to crawl space vapor barriers and commercial work, serving 12 communities across southern Illinois. Whether your home is a mid-century brick ranch or a newer subdivision build, we assess what is actually going on before recommending anything.
Drafty rooms and high winter bills? Spray foam fills every gap and seals air leaks at the same time.
Learn More
Heat rises straight through an under-insulated attic. Proper attic insulation cuts cooling and heating costs noticeably.
Learn More
Settled or thin attic insulation? Blown-in loose fill covers every corner evenly and reaches spaces batts cannot.
Learn More
Cold floors and rooms that never warm up signal a whole-home insulation gap - we find and fix it.
Learn More
Old, wet, or pest-damaged insulation works against you. Removal clears the way for a proper, effective replacement.
Learn More
An uninsulated crawl space makes every room above it colder and lets moisture work on your floor structure.
Learn More
Walls with no insulation lose heat all winter. Adding insulation to existing walls is quieter and more comfortable.
Learn More
Air leaks cancel out insulation. Sealing gaps around pipes, fixtures, and framing makes every other upgrade work better.
Learn More
A cold, damp basement drags down your whole home. Insulating the walls and rim joists keeps the lower level dry and warmer.
Learn More
Closed-cell foam delivers the highest R-value per inch and blocks moisture - ideal for crawl spaces and exterior walls.
Learn More
Open-cell foam seals sound and air leaks in interior walls and attics where flexible coverage matters most.
Learn More
Commercial buildings lose more energy through the envelope than most owners realize. We insulate warehouses, offices, and multi-unit properties.
Learn More
Moisture in your crawl space damages insulation and floor joists. A vapor barrier stops the problem at the source.
Learn More
Proper vapor barrier installation protects the entire crawl space from the humidity that is common in southern Illinois.
Learn More
Heat escaping through the attic floor wastes energy before your insulation even has a chance to help.
Learn More
Older homes rarely got proper insulation from the start. Retrofit insulation brings them up to current standards without a full renovation.
Learn MoreReach out by phone or through our contact form. We will ask a few quick questions - the age of your home, which areas you are concerned about, and what you have noticed. No technical knowledge needed. We respond within 1 business day and schedule a free on-site visit at a time that works for you.
A member of our team visits your home, looks at your attic, crawl space, or walls in person, and checks for moisture or damage that should be addressed before insulation goes in. You receive a written estimate that spells out the work, materials, and total cost - with no pressure to sign on the spot. If a permit is required, we handle it.
Our crew arrives, does the job, and cleans up. Most Marion homes are finished in a single day. Before we leave, we walk you through what was done and answer your questions. Spray foam jobs require a short re-entry wait while the foam cures - we tell you exactly how long. When we are done, you will feel the difference.
Illinois requires insulation contractors to hold a valid state license. We carry that license plus full liability insurance on every project. You can verify our credentials through the Illinois Department of Financial and Professional Regulation before you commit.
We come to your home, look at the actual conditions, and give you a written quote. No phone estimates, no pressure. You have as much time as you need to review and compare before deciding.
We have been serving Marion and southern Illinois homeowners since 2015. We know the older housing stock here, the crawl space moisture issues near Crab Orchard Lake, and what materials hold up in this climate.
Before we leave, we walk you through what was done and point out anything you should know. You can see the work, ask questions, and confirm it matches what was quoted. If something is not right, we come back.
Ready to get started? Request a free estimate or call us at (618) 422-0172.
"They came out the same week I called and gave me a written estimate before they left. The attic job was done in one day, and my upstairs bedroom is finally comfortable in summer. My electric bill the next month was lower than the same month last year."
Kevin M., Marion - Attic insulation
"I had a musty smell coming from the crawl space for two years. They found moisture damage to the existing insulation, removed it, installed a vapor barrier, and re-insulated. The smell is gone and the floors above it feel warmer. Wish I had called sooner."
Sandra R., Herrin - Crawl space insulation
"The spray foam job was completed faster than I expected. They told me to plan to be out of the house for 24 hours, which I appreciated knowing in advance. No surprises on the bill - they charged exactly what was quoted."
Dale W., Carbondale - Spray foam insulation
We respond within 1 business day. There is no obligation to commit after receiving your estimate. Once you submit, someone from our office will call you to schedule a free on-site visit - we look at the actual conditions in your home before recommending anything.
(618) 422-0172Marion Insulation is based in Marion, IL and serves 12 communities across southern Illinois, including Carbondale, Herrin, and Carterville. Most jobs are scheduled within the same week of the initial estimate. We cover the full Williamson County area and the surrounding region.
Most heat loss happens through the attic, not the walls. If your attic insulation is thin or compressed, warm air escapes continuously - your furnace is working fine, but the house is leaking. The U.S. Department of Energy recommends R-49 to R-60 for attics in Illinois, which most older Marion homes do not come close to reaching.
If you notice a musty smell from the floors, soft spots in hardwood, or visible condensation on pipes in the crawl space, moisture has been working on your home for a while. In southern Illinois, crawl space moisture is a common and serious issue - wet insulation stops working and accelerates wood rot. A vapor barrier combined with proper insulation addresses both problems.
Open-cell foam is the right choice for interior walls and attic insulation where flexibility and sound blocking matter. Closed-cell foam is denser, has a higher R-value per inch, and also acts as a moisture barrier - making it better for crawl spaces, basement walls, and exterior walls in Illinois winters. The difference in price is meaningful; a contractor should explain why one is recommended for each area.
Peek into your attic with a flashlight. If you can see the tops of the wooden joists running across the attic floor, you do not have enough insulation - period. Homes built in the 1960s were insulated to standards that are far below what is recommended today, and what was installed has had 60 years to settle and lose effectiveness. A visual check takes five minutes.
Yes. Ameren Illinois, which serves Marion and most of southern Illinois, runs an energy efficiency rebate program that can offset a portion of your insulation project cost. Rebate amounts change from year to year, so check Ameren Illinois Energy Efficiency before scheduling - not after. A federal tax credit for insulation improvements may also be available and can stack with the utility rebate.
Ask whether they will do air sealing before adding insulation - skipping this step makes the new material far less effective. Ask for a written estimate that specifies the material and the target depth or coverage. Ask whether a permit is required for your project. A contractor who hesitates on any of these questions or gives only verbal answers is worth a second look.
Marion Insulation is a licensed and insured insulation contractor based in Marion, IL, serving homeowners and businesses across 12 southern Illinois communities since 2015.
We hold the contractor licensing required by the Illinois Department of Financial and Professional Regulation for insulation work, and we carry liability insurance on every project.
Over the years, we have worked on hundreds of homes across Williamson County and the surrounding region - from spray foam jobs in older downtown Marion brick ranches to full crawl space encapsulations near Crab Orchard Lake. Across 16 service types, we handle the full range of residential and commercial insulation needs in this area.
Learn more about Marion InsulationThe best time is before you have another full summer or winter with high bills. If your home was built before 1985 and the attic has never been updated, you are almost certainly losing money every month. A quick visual check - can you see the tops of the joists above the insulation? - tells you most of what you need to know.
Yes. In a crawl space, the goal is both thermal performance and moisture control. Insulating the crawl space walls rather than the floor above it is more effective in most southern Illinois homes, especially when combined with a vapor barrier. The two work together - insulation without moisture control will fail faster in this climate.
Adding new material over old, compressed insulation can work in some cases, but not always. If the existing material is wet, damaged, or infested, it needs to come out first - otherwise the new layer sits on a compromised base and performs poorly. A contractor should assess what is there before recommending an approach.
For general insulation guidance, the ENERGY STAR Seal and Insulate program is a reliable resource - or call us at (618) 422-0172 and we will walk you through what your specific home needs.
Marion is the county seat of Williamson County, sitting in the southern tip of Illinois about 100 miles southeast of St. Louis. Home to roughly 17,000 residents, it serves as the regional hub for healthcare, retail, and services for the surrounding rural communities. The city draws on a mix of long-term homeowners and newer residents who moved for jobs at places like Heartland Regional Medical Center, one of the largest employers in the area. Most of Marion's housing stock dates from the 1950s through the 1970s - brick ranch homes that are now 50 to 75 years old and overdue for insulation attention.
The area around Marion is home to Crab Orchard National Wildlife Refuge and serves as the gateway to the Shawnee National Forest. Homes near Crab Orchard Lake and the lower-lying areas of Williamson County tend to experience higher ground moisture, especially in spring - which makes crawl space insulation and vapor barriers more critical here than in drier parts of the state. The Pavilion at Marion anchors the entertainment district, and the Williamson County Regional Airport marks the east side of town where newer subdivisions have grown up alongside the older core neighborhoods.
Southern Illinois winters are cold enough to demand real insulation, and the summers are hot and humid in ways that make a properly sealed attic just as valuable in July as in January. Whether your home is a 1960s brick ranch near downtown, a crawl space home in a low-lying part of Williamson County, or a newer build on the north side, Marion Insulation knows the conditions that matter here. Call us at (618) 422-0172 to schedule your free estimate.
By appointment only, no walk-ins.
Marion Insulation
406 E Warder StAlways open, 24/7.
Call Marion Insulation for a free on-site estimate - no obligation, no phone guessing, just a contractor who looks at your home and tells you exactly what it needs.