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Find Spray foam insulation pros in Dover

Avatar for Neil Umphress Construction
Neil Umphress Construction
4.9(
25
)

Serving Dover, 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

9 neighbors recently requested a quote
Recommended by45%of homeowners
Cronkhite Home Solutions
3.2(
169
)

Serving Dover, IL and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"The crew was very courteous, they got the job done, I thought the materials were a little high. Overall, they did a great job. I wont know how good the work is until my utility bill comes in. Ameren did the Home Audit for me, and that's what prompted me to get the insulation project done. The project only took a couple days to complete. The price did include blown in for my Attic and Rolled Batting in the basement"
 Medium Grey Double Four Traditional Lap Siding
 Eco Fiberglass Insulation
 This deck has a diagonal design
 Before
 Before

+55

Response time1 day
242 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Neil Umphress construction
Neil Umphress construction
4.9(
22
)

Serving Dover, IL and surrounding areas

In business since 2000

Emergency services offered

Warranties offered

"Neil did the job fantastically and explained what he was doing throughout, always asked for an inspection to make sure it was done to my satisfaction. Pricing was extremely fair and he was timely and quick. Would highly recommend for any insulation work you need done. Can’t speak on the other work he does, but if it’s on par with what he did for me, then you’d be doing well."
Blown-in
blown-in
insulation
blown-in insulation
blown-in

+11

Response time11 hrs
Response rate92%
Recommended by52%of homeowners
Avatar for Crawlspace / Basement Waterproofing Solution
Crawlspace / Basement Waterproofing Solution
4.4(
256
)
Insulation - Install or Upgrade

Serving Dover, IL and surrounding areas

In business since 1998

Free estimates

Credit card accepted

"Contacted a few different companies and had two come out to inspect a large crack in the foundation. First company came out and indicated that the foundation had failed and needed piers put in to stablize the foundation. Crawlspace Solutions came in and indicated that they felt there was nothing failing with the foundation and that they could inject the cracks and warranty the work regardless of if there was a larger issue that required piers. Scott was the person that estimated and completed the work. He was extremely responsive and did a very good job of injecting the cracks. When Scott came to quote the work he also offered a price to apply spray foam to the walls and the sill to replace the fiberglass insulation that the previous owner of the house had on the crawlspace walls. Price included in review was to inject 2 cracks and apply the spray foam. Really glad we had the foam insulation put in. Way cleaner, durable and sealed up some areas that the other insulation could not take care of. Scott also spent extra time explaining some other areas to keep an eye out on to help ensure the foundation area is well managed from any further potential issues like down spout discharge locations, hose connections and just general drainage of the property. One of the concerns we had was if we spend all this money on the injection and the foundation ends up needing to have piers put in, how would that impact the warranty. Scott assured us that if any additional settling occurs and the repair fails, they would come back and repair the injected cracks after the foundation was stable."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Recommended by90%of homeowners
Avatar for Insolux Contractor
Insolux Contractor
5.0(
2
)

Serving Dover, IL and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"We had a fantastic experience with Marco and his team. They did insulation work for our attic and the results were excellent. You can really tell he cares about quality and customer service."
Response time6 hrs
Response rate100%
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,688
)
Insulation - Install or Upgrade

Serving Dover, IL and surrounding areas

In business since 1971

Credit card accepted

"Well, the first time the replacement was ordered it was the wrong one, which of course, delayed the installation a week. When it was finally installed I had to pay an additional $850 for code upgrades. This I was not informed of by Home Shield. Then we noticed that there was water on the garage floor and found that the pipe coming in from the wall was leaking at the wall so had to call the plumbing company back out to fix it. They first tried to say it was not their fault but since there wasn't a leak before they installed they did fix it. I have used Home Shield a few times before and never had a problem. Some of the companies they use are not the best so you have to research them before you commit. I have found HS service to be good if you do your homework. At the end of the day I was without hot water for almost 3 weeks but it was do to the plumbing company they sent out."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by65%of homeowners
Showing 1-10 of 23
FAQs for spray foam insulation projects in Dover, 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.