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TRUSTED BY GREENLEAF, ID HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon49
    Verified insulation services reviews

Top-Rated Insulation pros in Greenleaf - Updated Nov 2026

Avatar for Insulation Commandos of Boise
Insulation Commandos of Boise
5.0(
7
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Greenleaf, ID and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"We recently had insulation work done by commandos Insulation and the entire experience was excellent from start to finish. The team was professional, punctual, and very knowledgeable. They explained the process clearly, completed the job efficiently, and left everything clean afterward. Their attention to detail and customer service really stood out. I would highly recommend them to anyone looking for quality insulation work at a fair price!"
30 neighbors recently requested a quote
Avatar for L2 Insulation, Inc.
L2 Insulation, Inc.
4.5(
16
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade+1 more

Serving Greenleaf, ID and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"I appreciated how thorough L2 was during the estimate visit, explaining options and how they could work for my house. I had L2 remove old blown-in in the attic and old batt in the crawl space, and then add baffles and blow in new insulation in the attic, and vapor barrier and spray foam in the crawl space. This took three days. The teams worked hard, protected my house carefully, and cleaned up every day before they left. They did a really excellent job. My only caveat is that L2 could be a bit more proactive about communicating scheduling. But they got right back to me when I asked."
Airplane Hangar
Airplane Hangar
Truck Repair Shop
Truck Repair Shop
Conditioned Attic

+1

Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Energy Allies, LLC
4.9(
88
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Greenleaf, ID and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"This Company Rocks, they in detail explained everything to me so I knew what to expect the day of Install, gave wonderful information on how to make my own decision on the choices of insulation with no pushing onto something I did not think I might choose, thorough in cleaning up the sight and showing me the before and after photos they took, I will recommend them to everyone I know."
Blow in insulation
Blow in insulation
Air sealing an attic
Air sealing an attic
Duct sealing

+3

Response time5 hrs
Response rate87%
Recommended by98%of homeowners
Avatar for USA Insulation of Boise
USA Insulation of Boise
4.8(
19
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Greenleaf, ID and surrounding areas

In business since 2021

Free estimates

Small jobs welcome

"This company and team really went a few extra miles for us, including multiple trips and lots of extra hours down here to Pullman where we live. Very courteous, and determined to get everything right before saying the job was done. Highly recommend! They blew insulation into our attic, installing baffles; and injected expanding insulation into our walls. Daryl and his team are fantastic."
Insulate large Garage
Insulate large Garage
Insulate large Garage
Insulate large Garage
Patching Injection Points

+10

Response time1 day
Response rate92%
Recommended by94%of homeowners
Avatar for Evergreen Insulation LLC
Evergreen Insulation LLC
4.7(
6
)
Batt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Greenleaf, ID and surrounding areas

In business since 2023

Free estimates

Small jobs welcome

With years of experience as an Insulation Contractor, Evergreen Insulation LLC is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you!

Response time11 hrs
Response rate91%
Recommended by50%of homeowners
Showing 1-10 of 27
Insulation FAQs, answered by experts

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

The amount and type of insulation your home needs depends on your location, climate, and the specific installation area (attic, walls, or floors). Your local building code will typically determine the minimum required R-value. For specific recommendations, Energy Star suggests the following R-values: homes in the Southern U.S. should have R30 to R60 in attics and R13 to R25 in floors and walls; homes in moderate climates need R38 to R60 in attics and R25 to R30 in floors and walls; and homes in northern states require R49 to R60 in attics and R25 to R30 in floors and walls.

To cover your HVAC ducts and air vents during construction, use plastic sheets or drop cloths secured with painter's tape. Be sure to cover all supply vents on your floors and walls, as well as the larger HVAC return vent, which is typically on the ceiling. While canvas drop cloths can also be used, they may not catch all the fine dust. It is crucial to shut off your HVAC system or at least the zone where construction is happening. Running the system with vents sealed can put significant strain on the blower motor and air handler. For additional dust containment, you can also hang plastic sheets over doorways to separate the construction area from the rest of your home.

Three signs that you need crawl space insulation are drafts, high energy bills, and mold. Drafts can start in crawl spaces and cause hot or cold air to spread to the rest of your home through holes in the floors and walls. And even if your entire home is well-insulated, you can still feel an unchecked draft from your crawl space and in your utility bill. Uninsulated crawl spaces can let in air and moisture, and because they’re built directly on the ground and difficult to dry out, they are hotspots for mold and mildew.

If you feel your energy bills are too high or your HVAC system is working harder than necessary to maintain the correct temperature in your home, you may have an under-insulated home. If you’re unsure, consider having your system’s efficiency assessed by a local independent energy auditor.

The Greenleaf, ID homeowners’ guide to insulation services

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