
Serving Lewes, DE and surrounding areas
Approved
In business since 2006
Free estimates
Small jobs welcome
"Very professional and took time to clean up after they were done. Visit would recommend them to anyone looking for attic insulation"





+7


Serving Lewes, DE and surrounding areas
Approved
In business since 2006
Free estimates
Small jobs welcome
"Very professional and took time to clean up after they were done. Visit would recommend them to anyone looking for attic insulation"





+7

Serving Lewes, DE and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Emergency services offered
"These guys took time from their busy schedule came to my residence on Easter Sunday to give me a price on repairing insulation mess left by previous contractor. They arrived next day and completed the insulation work and did an excellent job at an excellent price. My thanks to Sagittarius air seal thanks again, Michael Duffy."





+38

Serving Lewes, 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 Lewes, DE and surrounding areas
Approved
Super Service Award Winner
In business since 2005
Free estimates
Emergency services offered
"Joe and jason were very professional and made sure to clean everything perfectly while doing my attic insulation, I will be recommending them to everyone!"





+82

Serving Lewes, DE and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"Was able to show exactly where leaks and poor existing insulation were causing energy loss."





+137

Serving Lewes, DE and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
Reilly Home Services LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.\n





+34

Serving Lewes, DE and surrounding areas
In business since 1987
Free estimates
Emergency services offered
"If you want someone to do a project in an unfinished basement, I would recommend Right-Way. However, if you want someone to do this work in a room with special conditions, as we did, I would not recommend them. The sales person was very professional and up-front. The workers were very pleasant and cleaned up fabulously after their work. They did a good job with the actual installation. They also demonstrated how to use everything very well. Our complaint is that we carefully explained to everyone that they were working in a finished room with a carpet that was not a basement (that was obvious) and that the walls were going to be deeper after we had insulation installed in the room. However, they installed the sump pump was too close to the wall without enough room for regular 2x4 studs and sheetrock and there was a cleanout that was also too close and stuck up so that we could not replace the carpet. The workers were also told to carefully remove the molding and paneling because we wanted to reuse it. Either they were not very careful or there was some other problem, but there was little we could use. Although someone came back to remove the cleanout and recessed the access to the sump pump, the bottom line is that it isstill partially under the new wall and our contractor (who spoke to the workers before they started jack-hammering the floor) had to do extra work to put the room together. I feel that whoever planned the job didn't think through the fact that we weren't going to use the cleanout in the first place (who would bring a hose into a finished room?) and that you need at least 4" clearance for a 2x4 studded wall. We do now have a room that is a lot more protected from water and everything is back where it should be, but it was a lot more complicated than it needed to be."




Serving Lewes, DE and surrounding areas
In business since 2014
Free estimates
Credit card accepted
"I can?t say enough good things about PeakPro Insulation! Before they came out, my attic wasn?t insulated at all and my house constantly fluctuated in temperature. When their team arrived, they introduced me to solar radiant barrier insulation. The difference was noticeable immediately. After the job was done, every room in my house finally felt consistent in temperature, and even my attic felt cooler while they were working up there. On top of that, they left the attic looking beautiful and clean. Highly recommend"





+2

Serving Lewes, DE and surrounding areas
In business since 2018
Free estimates
Emergency services offered
"E&Bs gave me some possible options. They did an excellent job on replacing my floor to waterproof vinyl flooring. Would definitely hire for new services."





+157

Serving Lewes, DE and surrounding areas
In business since 1971
Credit card accepted
"Roberto was the technician and he was very professional, polite, and personable. He inspected the rest of our system and told us things that needed to be changed or repaired. He showed me pictures of everything. Everything he told me about was accurate. He quoted me a price for R38 insulation , Some of our ducts were plastic and he recommended them to be changed. I agreed completely and didn't know they were plastic. I would have had them done the work but I had no price comparisons to make and besides I didn't have the money right then. So he just finished the vent cleaning and left his card. He did a great job on the vent cleaning and was happy with the work."





+2
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.
From average costs to expert advice, get all the answers you need to get your job done.

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