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Top-Rated Insulation pros in Firth - Updated Nov 2026

Avatar for Advanced Home Services
Advanced Home Services
4.6(
195
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Firth, ID and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"Frank was very patient with us and very willing to explain everything multiple times to insure we knew exactly what getting a new AC and furnace would ential cost wise and time wise. Appreciate the transparency and professionalism."
Furnace Service
Furnace Service
Advanced Home Services
Advanced Home Services
Advanced Home Services

+4

Response time10 hrs
17 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Valley Spray Works, LLC
Valley Spray Works, LLC
5.0(
4
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallInjection Insulation - Install

Serving Firth, ID and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

Valley Spray Works is a leading insulation company serving Twin Falls, and surrounding areas in Southern Idaho. We specialize in spray foam insulation services for residential, commercial, and industrial properties. \n \nOur mission is to provide high-quality closed-cell, open-cell, commercial roofing, or blown-in insulation solutions that improve energy efficiency, indoor comfort, and overall building performance.Contact us today at (208) 490-9260 to learn more about our services and schedule a consultation with our experienced team

Open Cell
Closed Cell
Intumescent Coatings
Response time4 days
Response rate100%
8 neighbors recently requested a quote
Avatar for Gem State Insulation
Gem State Insulation
New to Angi
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Firth, ID and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

Our company invites you to experience prompt service and superior attention to detail. Our customer satisfaction is our top priority. We will earn your trust for a lifetime. We believe in making all clients repeat clients. You can be assured you're in good with our company working on your home improvement project. If you are looking for a contractor that follows business practices such as promptly returning phone calls, arriving on time for appointments and following through on promises then call our reputable company today We will be the one and only contractor you'll ever need. Call us today and you'll be pleased you did. Thank you \n

3 neighbors recently requested a quote
The Service Company of Idaho
New to Angi
Spray Foam Insulation - Install

Serving Firth, ID and surrounding areas

Approved

In business since 2013

Free estimates

Offers commercial services

We are 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.

Response time10 mins
Avatar for Western Energy Solutions
Western Energy Solutions
4.9(
57
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Firth, ID and surrounding areas

In business since 2010

Free estimates

Small jobs welcome

"They were super nice and professional. I provided information about what I knew about my insulation, and they quoted me the cost right over the phone. They were even able to come out the next business day and get it done. I really appreciate the work they did, and it looks amazing."
Attic inuslation
Attic insulation
Attic insulation
Victorian attic
Victorian attic

+3

Response time1 day
Response rate91%
Recommended by96%of homeowners
Avatar for Teton Insulation and Solar - Inicio  Facebook
Teton Insulation and Solar - Inicio Facebook
4.4(
10
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Firth, ID and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"I highly recommend Teton Insulation and solar to anyone who needs their assistance. I am so glad that Home Advisor Sent them as one of my choices to choose from . Kind, courteous and knowledgeable is what you get when you deal with this company. Thank you to Tyson Wood and thank you Home Advisor. I was fortunate enough to have them clean my ductwork in my home..Wow, what a difference. A+++++"
Response time2 days
Recommended by100%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Firth, ID 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by65%of homeowners
Nelson Insulation
New to Angi
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Firth, ID and surrounding areas

Free estimates

Offers commercial services

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 customer's interests, and make their concerns the basis of our business.

Showing 1-10 of 17
Insulation FAQs, answered by experts

The average cost to install insulation is around $1,800, but you could pay anywhere between $500 and $4,500, depending on various factors. Some of the things that have a significant influence on your pricing include the following:

  • Size of the area 

  • Type and R-value of the insulation 

  • Whether your space is finished or unfinished

  • Accessibility of the area

  • Your geographical location

  • Amount of site preparation, especially for blown-in insulation

  • Whether or not you need old insulation removed

It’s best not to install a radiant barrier directly under insulation because it requires an air gap on at least one side to work properly. Instead, you should install the radiant barrier over your existing insulation to create an air space to reflect the radiant heat.

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.

Fiberglass is considered a favorite garage insulation choice due to its combination of affordability, ease of installation, and overall effectiveness. Fiberglass provides good thermal resistance, helping regulate garage temperatures and minimize heat transfer. Additionally, fiberglass is moisture-resistant, reducing the risk of mold or mildew formation.

Yes, you should insulate behind shower walls. Insulating helps prevent heat loss, which keeps the shower or tub from getting too cold and helps maintain a comfortable temperature in your bathroom. Additionally, proper insulation and air sealing can help prevent wall rot and moisture buildup. It is recommended to use a high R-value rated foam insulation combined with a vapor barrier.

The Firth, ID homeowners’ guide to insulation services

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