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Find Insulation pros in Cheswold

Avatar for Sagittarius Airseal
Sagittarius Airseal
4.8(
31
)

Serving Cheswold, 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."
Blowing insulation
Blowing insulation
Blowing insulation
Blowing insulation
Blowing insulation

+38

Response time12 hrs
Response rate85%
11 neighbors recently requested a quote
Avatar for MSJ Attic Insulation
MSJ Attic Insulation
5.0(
5
)

Serving Cheswold, 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."
Business card
Poorly insulated
Poorly insulated
In progress
Radaint barrier

+6

11 neighbors recently requested a quote
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
21
)

Serving Cheswold, DE and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"We are extremely satisfied with the whole process of our house being insulated. First we had the walls done, and then a couple weeks later we had our attic insulated. The crew were so nice, friendly, and knowledgeable. We are very satisfied with everything. Thank you, everyone."
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
126 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Lawson Home Services, LLC
Lawson Home Services, LLC
4.6(
59
)

Serving Cheswold, DE and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Don Lonski of Lawson Home Services came to our home to clean our dryer duct and the back of our dryer. My goodness he was absolutely wonderful. The last Teck that came refused to open the back of our dryer and clean the lint. He claimed it was not necessary to open the Flexible Vent Hose to remove all the line. After a few years our dryer was not very hot. Clothes were still damp. So, I just stopped using my dryer and hung everything on all the doors. I was afraid of a fire. Saved money on the electric bill; but I needed my dryer back. We want to tell you that Don Lonski checked everything and he said you must always remove the Flexible Vent Hose and clean in the back of the dryer. And it should be done once every year. Not only that Don Lonski went into our crawl space and found our metal duck work was improperly installed. Instead of using the metal the whole 20 feet, they used 15 feet of metal and used the Flexible Vent Hose at both ends and did a terrible job of taping as a result we had major leakage. Don Lonski said he will return when the office schedules him and he will do the job correctly. Don was very professional, ever so pleasant and extremely knowledgeable. Don Lonski really took his time to explain all the problems we had. We are so grateful that we ended up with a great guy. Please schedule Don Lonski to return to complete our job completely. Tom & Carol Haley"
Metal Door Crawlspace Entrace
Turtl Crawlspace Entrance
Attic Air Leaks
Attic Air Sealing
Garage Loft Ready for Sprayfoam

+137

Response time9 hrs
139 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Rightway Waterproofing Co
Rightway Waterproofing Co
4.4(
236
)

Serving Cheswold, DE and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"I got 3 estimates and this company was the best price. From the free estimate to completion of work, everything was so professional. They showed up on time with a 7-man crew, so the job was completed in one day. Six years after the job was done, my basement is still bone dry - so dry it actually gets dusty! My crawlspace is so low a person can only crawl around, but they did a great job there, as well, installing a thick white vapor barrier."
Drilling weep holes
Crawlspace encapsulation
Severe mold problem
Recommended by87%of homeowners
1st State Pest & Home Services, LLC
3.8(
112
)

Serving Cheswold, DE and surrounding areas

In business since 2010

Free estimates

"When Mike did the free estimate, he told me it wasn't the walls where we were losing heat. It was my crawl space. Also, totally above the work of insulating the space, he noticed an air duct was disconnected. He got the straps needed to fix the vent and didn't charge me. Excellent customer service. He was neat, on time, and quick with the insulation."
 old temp vent wide open
 temp vent
 old vent
 new vent open and closes itself
 raccoon trapped

+3

Recommended by88%of homeowners
Avatar for PeakPro Insulation LLC
PeakPro Insulation LLC
4.0(
4
)

Serving Cheswold, 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"
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation

+2

Response time4 days
Response rate86%
Showing 1-10 of 34

FAQs for insulation service projects in Cheswold, DE

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.

The Cheswold, DE homeowners’ guide to insulation services

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

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