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Top-Rated Spray foam insulation pros in Gillette - Updated Nov 2026

Avatar for Koala Insulation of Casper
Koala Insulation of Casper
5.0(
3
)

Serving Gillette, WY and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Excellent service and extremely professional and knowledgeable team. I highly recommend Koala Insulation for all their insulation needs. In fact I have hired them again to install total encapsulation of my cellar. I trust them completely, I would never hire anyone else except Koala Insulation!! Also they are very kind and respectful!!"
Insulation Projects
Spray Foam Insulation
Blown-in Insulation
Response time2 days
Response rate88%
1 neighbors recently requested a quote
Avatar for Seamless Systems LLC
Seamless Systems LLC
5.0(
5
)

Serving Gillette, WY and surrounding areas

Approved

In business since 2016

Offers commercial services

Seamless Systems delivers high-quality residential and commercial exterior solutions across the Wyoming and Black Hills region. We specialize in seamless gutter installations, spray-foam insulation, garage door repair & service, and dirt-work/excavation services—providing durable craftsmanship designed to withstand the region’s demanding climate.\n\nOur team is guided by our proprietary 4C Process, ensuring clarity, communication, craftsmanship, and customer satisfaction from start to finish. Whether improving energy efficiency, protecting property exteriors, or preparing land for new construction, we provide reliable, transparent, and long-lasting solutions tailored to every project.\n\nTrusted for our professionalism and commitment to excellence, Seamless Systems is the partner homeowners and businesses turn to when they want the job done right.

Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation

+11

5 neighbors recently requested a quote
Avatar for Capitol Builders
Capitol Builders
New to Angi

Serving Gillette, WY and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

Capitol Builders 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. Turning Your Vison Into Reality!

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18 neighbors recently requested a quote
Avatar for Energy Insulation, LLC
Energy Insulation, LLC
4.9(
16
)

Serving Gillette, WY and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"Sam was quick to call me back and schedule an estimate meeting time for the next day. He was on time to the estimate meeting and quickly provided a written estimate. Once I approved the estimate on line he called and scheduled install of closed cell spray foam within the week. Sam and his crew showed up a few minutes early, did the job to perfection, left the area neat and tidy. Great young business owner and hard worker. Would recommend to anyone and everyone.!!!"
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+17

Response time2 days
Response rate89%
Recommended by100%of homeowners
Avatar for High Country Construction
High Country Construction
5.0(
1
)

Serving Gillette, WY and surrounding areas

In business since 2025

Free estimates

Credit card accepted

High Country Construction is here to help! We are full service custom home builders and also provide spray foam insulation installs. We are based out of the Newcastle, WY area. Give our team a call today. We're looking forward to working with you! \n

Response time2 days
Response rate100%
Sprayfoam4u LLC
New to Angi

Serving Gillette, WY and surrounding areas

In business since 2023

Free estimates

Credit card accepted

Sprayfoam4u 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.

Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Insulation - Install or Upgrade

Serving Gillette, WY and surrounding areas

In business since 1971

Credit card accepted

"Well, the first time the replacement was ordered it was the wrong one, which of course, delayed the installation a week. When it was finally installed I had to pay an additional $850 for code upgrades. This I was not informed of by Home Shield. Then we noticed that there was water on the garage floor and found that the pipe coming in from the wall was leaking at the wall so had to call the plumbing company back out to fix it. They first tried to say it was not their fault but since there wasn't a leak before they installed they did fix it. I have used Home Shield a few times before and never had a problem. Some of the companies they use are not the best so you have to research them before you commit. I have found HS service to be good if you do your homework. At the end of the day I was without hot water for almost 3 weeks but it was do to the plumbing company they sent out."
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+2

Recommended by65%of homeowners
Avatar for Five Star Energy Services, LLC
Five Star Energy Services, LLC
5.0(
5
)

Serving Gillette, WY and surrounding areas

In business since 2020

Free estimates

Offers commercial services

Here at Five Star Energy Services, LLC, our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion we work with you until the job is done. With over 20 years of experience, we are known for our prompt service and superior attention to detail. Our commitment to quality is evident from the beginning to the completion of your home improvement project. We are here to serve you with the knowledge and quality you deserve and expect. Call our reputable business today - you'll be pleased you did. Thank you! \n

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+23

Response time1 day
Recommended by100%of homeowners
AC Insulation
New to Angi

Serving Gillette, WY and surrounding areas

In business since 2022

Free estimates

At AC Insulation we pride ourselves on being the best home improvement company in the area. \nWe've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. \nBeing a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started! \n

Response time30 mins
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FAQs for spray foam insulation projects in Gillette, WY

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.