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TRUSTED BY NORWALK, IA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon241
    Verified drywall insulation services reviews

Top-Rated Drywall insulation pros in Norwalk - Updated Nov 2026

Avatar for INSULATE IOWA LLC
INSULATE IOWA LLC
4.8(
175
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Norwalk, IA and surrounding areas

Approved

In business since 2008

Free estimates

Offers commercial services

"This is the second time I have hired L&L. They work fast, clean, and they know their stuff. I was wanting to insulate my vaulted ceiling that I suspected had very little insulation in it from the house being built 30 years ago. Other contractors wanted to rip all the drywall down to install but L&L said they could do a packed insulation that would warm the space and be air tight to avoid condensation issues. I have noticed a huge difference and at a fraction of the cost of others. I already have them lined up for another insulation project in the basement."
Before
After
1
2
1

+10

Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for Koala Insulation of Des Moines
Koala Insulation of Des Moines
4.7(
30
)
Blown-In Insulation - Install or Upgrade

Serving Norwalk, IA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"They were prompt, friendly and knowledgeable about their product. In an out in about two hours from set up to completion. Iâ ve already noticed a difference in my house. Definitely would recommend them for foam insulation."
Solar Fan
Soffit Vents
Baffles
Blown In and Baffles
BIB Insulation

+3

Response time5 hrs
Response rate97%
36 neighbors recently requested a quote
Avatar for AFI Insulation
AFI Insulation
4.4(
60
)
Blown-In Insulation - Install or Upgrade

Serving Norwalk, IA and surrounding areas

Approved

In business since 2014

Free estimates

Small jobs welcome

"I am 100% satisfied. Excellent customer service, on time, friendly and knowledgeable. I had insufficient insulation in my attic, and they remedied the situation quickly and professionally by adding enough foam insulation to achieve R-49. Also helped me with my rebate form for MidAmerican Energy. Top notch!"
Response time2 days
40 neighbors recently requested a quote
Recommended by90%of homeowners
S & K Insulation Services
4.4(
48
)
Blown-In Insulation - Install or Upgrade

Serving Norwalk, IA and surrounding areas

Approved

In business since 2004

Free estimates

Small jobs welcome

"The bid was to increase my insulation factor to R38,check that ventilation screems in roof soffits were open, and to cover any open holes before the insulation was blown in. The work was performed in a neat, timely, efficient manner for the amount bid."
Response time11 hrs
Response rate85%
16 neighbors recently requested a quote
Avatar for L & L Home Solutions With Universal Windows Direct
L & L Home Solutions With Universal Windows Direct
4.9(
88
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Norwalk, IA and surrounding areas

In business since 2008

Free estimates

Credit card accepted

"Abraham and his team came out and completed our insulation project in -17° weather. My wife and I are thrilled with the finished product and the job that these guys did. We would definitely recommend them and would hire them again in the future. We have bedrooms above our garage that were 15° colder than the rest of our house so we had Abraham give us his expert opinion on what needed to be done to warm up those bedrooms and our garage. Only after about an hour after his team left, we could already feel the temperatures rising in both the bedrooms, and the garage. Can’t thank them enough for their hard work!"
Insulation Project
Insulation Project
Insulation Project
Insulation Project
Insulation Project

+2

Recommended by100%of homeowners
Avatar for L & L Home Solutions
L & L Home Solutions
4.8(
76
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Norwalk, IA and surrounding areas

In business since 2008

Free estimates

"This is the second time I have hired L&L. They work fast, clean, and they know their stuff. I was wanting to insulate my vaulted ceiling that I suspected had very little insulation in it from the house being built 30 years ago. Other contractors wanted to rip all the drywall down to install but L&L said they could do a packed insulation that would warm the space and be air tight to avoid condensation issues. I have noticed a huge difference and at a fraction of the cost of others. I already have them lined up for another insulation project in the basement."
Sidewall insulation
Sidewall insulation
Side wall dense pack
Over window
Interior dense pack

+11

Response time1 day
Recommended by94%of homeowners
Avatar for Attic Solutions
Attic Solutions
4.8(
91
)
Blown-In Insulation - Install or Upgrade

Serving Norwalk, IA and surrounding areas

In business since 2009

Free estimates

Warranties offered

"Prevailing came in to insulate my basement and attic. The workers were professional and worked the entire time they were here (which seems like a low standard, but I've had situations where 4 people come to work and 2 stand around talking for most of it from other companies). More importantly, they explained what they were doing as they did it, and cleaned up after themselves before they left! Scheduling the service was quick and easy since they were able to use our Alliant Energy quote to avoid a second home assessment, and they came in under budget. Very satisfied - plan to have them back to blow insulation in the exterior walls before winter."
Consistent insulation level.
Our family business
Newer attic insulation topped off to R-49
Insulation added in a restricted space to R-49
Attic insulation added around dense truss work.

+13

Response time8 hrs
Recommended by98%of homeowners
Showing 1-10 of 33
Drywall Insulation FAQs, answered by experts

You can usually tell if you have plaster or drywall by touch (plaster is harder, colder, and smoother than drywall) or by tapping on it (drywall sounds hollow, plaster does not). If you still cannot tell, peek under an outlet cover and check the cut edges. The rough edges show the composition of the wall. You will see either drywall (two paper sheets sandwiching gypsum material) or only plaster material (no paper sheets).

You may need to replace drywall because of smoke damage. If the drywall is covered in soot, you may be able to clean it, but it will require a lot of time and effort. You could spend hours cleaning the drywall only to find there is more damage and it needs to be replaced anyway. It’s usually easier and safer to remove the smoke-damaged drywall and replace it.

Plaster ceilings can sag for several reasons. In some cases, the plaster and other building materials shift and come apart over time, which is why you’ll commonly find drooping plaster ceilings in older homes. Improper installation, foot traffic, and water damage—often from a leaky roof or a broken pipe—can also cause plaster ceilings to sag.

While you can put new drywall over old drywall, it’s not always the best option. In some cases, drywalling over drywall can make it harder to find wires and pipes behind your walls and conceal more serious problems with your walls. It can also make the room smaller. On the plus side, putting drywall over drywall can improve soundproofing and insulation. Plus, it’s often less expensive than tearing down and adding new drywall.

When doing a DIY paint job, it can be tricky to achieve the perfect, straight line between your wall and ceiling. There are several methods, including lining it with painter’s tape and using the “cut in” brush tactic. Some homeowners choose to apply a thin line of caulk to the wall-ceiling seam to create the appearance of a perfect line.

The Norwalk, IA homeowners’ guide to drywall insulation services

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