
Serving Montchanin, DE and surrounding areas
Approved
In business since 1981
Free estimates
Credit card accepted
"I have had good experience on a small project (installation of insulation blanket for basement) with Energy Services Group."





+4


Serving Montchanin, DE and surrounding areas
Approved
In business since 1981
Free estimates
Credit card accepted
"I have had good experience on a small project (installation of insulation blanket for basement) with Energy Services Group."





+4

Serving Montchanin, DE and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"Did a great job on the insulation however they left a hole in the ceiling when they dropped something on the attic floor. Not a big deal but they need to be careful. Overall, amazing work they do all kinds of insulation and they also install radiant barriers on roof joists. They are reasonably priced and the crew is super friendly, pleasure to work with."





+6

Serving Montchanin, DE and surrounding areas
Approved (Corporate)
In business since 2023
Free estimates
Warranties offered
"These guys were professional, on time and communicated very well... I would recommend this company to you for all your Spray Foam Insulation needs..."




Serving Montchanin, DE and surrounding areas
Approved
In business since 1976
Free estimates
Credit card accepted
"Provided excellent recommendations and completed the work in a satisfactory manner."

Serving Montchanin, DE and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"Friendly Knowledge Answered all questions"





+137

Serving Montchanin, DE and surrounding areas
Approved (Corporate)
In business since 1928
Free estimates
Small jobs welcome
"Came out promptly - same day, on a Saturday, to remove a hornets nest because I have a bee sting allergy. Very courteous"

Serving Montchanin, DE and surrounding areas
In business since 1977
Free estimates
Credit card accepted
"Unfortunately, when the techs started the process, the insulation already in the walls prohibited the addition of the foam. I cannot begin to tell you how disappointed I was, as the job they had done on our tiny addition was remarkable. However, isn't it wonderful to have a company tell you the truth!"

Serving Montchanin, DE and surrounding areas
In business since 2020
Free estimates
Warranties offered
"Highly recommend Koala insulation to anyone in need of insulation services. Matt was prompt, friendly and examined all options. During the day of sevuce, the installation crew showed up on time , examined the process, worked quickly and cleaned up after. Their prices and quality cannot be beat and its not easy to find high quality at such a price. Thank you!"




Serving Montchanin, DE and surrounding areas
In business since 2019
Free estimates
"This company has made me feel safe and secure. I was unaware that 14 windows in my house did not lock. Now I can go to sleep with peace of mind. The salesman showed me everything and was thorough every step of the way. The install manager answered all my questions and the crew knocked it out the park and they are complete horses. Thank you so much victory."





+14

Serving Montchanin, DE and surrounding areas
In business since 2013
Free estimates
Credit card accepted
"Steve calmed my fears and did the job in two phases at a great price. First all Mold was removed. Second Steve’s Cree came out and built the French Drain in my basement. In both occasions Steve’s crew came out on time and worked very hard to get the job done. Steve kept in constant contact with me during the process and sent pictures of the completed job. I highly recommend Steve for his professionalism and Honesty."





+18
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.
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