Top-rated spray foam insulation pros.

Get matched with top spray foam insulation pros in Seneca, IL

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Spray foam insulation pros in Seneca

Avatar for Weather Shield Insulators
Weather Shield Insulators
5.0(
27
)
Insulation - Install or Upgrade

Serving Seneca, IL and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"We badly needed insulation in our attic. We got three quotes. Weather Shield was not only the most reasonable, but the only company in which the owner both gave us the quote and installed the insulation with colleague. We could not have asked for more professionalism or better service. Would highly recommend Gus."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+14

Response time11 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Attic Pro
Attic Pro
5.0(
28
)

Serving Seneca, IL and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Attic Pro Insulation did an outstanding job! They contacted me 10 minutes after I entered my search information.They were professional, on time, and explained everything clearly. Highly recommend them for anyone needing quality insulation work!"
Response time8 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for Neil Umphress Construction
Neil Umphress Construction
4.9(
25
)

Serving Seneca, IL and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: True professional

"Installed additional insulation in attic and walls and did an excellent job. Also put in attic vents and exhaust fan. I will hire again for various construction projects."
Insulation job
Insulation job
Insulation job
Insulation job
Insulation job

+8

6 neighbors recently requested a quote
Recommended by45%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.7(
263
)

Serving Seneca, IL and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Devan, Lauren and Brendan were my main points of contact with Home Genius Exteriors and they showed professionalism and personality throughout the whole process. Both Brendan and Devan spent time taking to me, even after our business was concluded, this was an exceptional experience and I highly recommend Home Genius Exteriors and all their employees."
Recommended by87%of homeowners
Avatar for A New Look Construction, LLC
A New Look Construction, LLC
5.0(
10
)

Serving Seneca, IL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

Response time1 day
Response rate89%
Recommended by77%of homeowners
Avatar for Home Comfort, Inc.
Home Comfort, Inc.
4.9(
157
)

Serving Seneca, IL and surrounding areas

In business since 1948

Emergency services offered

Credit card accepted

"Removed existing insulation and installed spray foam. Great company to work with from my initial inquiry through the entire process of quoting, scheduling, removal and installation. I would definitely recommend Home Comfort Insulation."
Response time11 hrs
Response rate94%
Recommended by87%of homeowners
Avatar for Home Comfort Insulation
Home Comfort Insulation
4.6(
12
)
Insulation - Install or Upgrade

Serving Seneca, IL and surrounding areas

In business since 1948

Free estimates

Emergency services offered

"All of the people (salesman and workers) were very nice and easy to work with but there was a disconnect between them. The salesman obviously had never done this kind of work so some things he thought could be done actually wouldn't work. For example, in the kitchen wall, one of the biggest problems with cold intrusion comes from a covered over glass brick window. The workers were unable to fill behind the cabinet there because the drill would have broken the glass, so that will still be a spot of cold intrusion.
The other major problem of disconnect was a crawl space in a room addition. Apparently it is so shallow that no one can fit into half of it to spray. I can't believe the company doesn't have a remote camera they could have used to determine that. The end result is that only half of my crawlspace got the spray foam. They offered to cut a hole in the floor and try to do it that way or to dig around two sides of this room and spray the outside. I passed on those two solutions.
I waited more than three weeks for the salesman to get back to me with those possible solutions. I feel that was poor responsiveness and a lack of professionalism.
"
Recommended by88%of homeowners
Avatar for USA Insulation South Elgin
USA Insulation South Elgin
4.4(
25
)

Serving Seneca, IL and surrounding areas

In business since 2019

Free estimates

Credit card accepted

"Once they got here it didn't take long for them to blow in the foam insulation. They only had two guys and they were quick. The one blowing it in show me what he does and explained it to me. Very nice people."
New Construction Injection Foam Install
Removing Siding for Injection Foam Install
Exterior Install of USA Premium Injection Foam
Drilling Holes for Exterior Install of USA Foam
Siding Removal for Exterior Injection Foam Install

+2

Response time11 hrs
Recommended by86%of homeowners
Showing 1-10 of 31
FAQs for spray foam insulation projects in Seneca, IL

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.