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  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon51
    Verified drywall insulation services reviews

Find Drywall insulation pros in Alton

Avatar for Foam Co.

Foam Co.

5.00(
10
)
Approved Pro

Foam Co.

5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
4 years of experience

We are local owned St. Louis insulation provider including, fiberglass/cellusose blown in insulation, Batt Insulation, Spray Foam Insulation, Crawl Space Insulation and Insulation Removal! We come in with the best interest of the homeowner and customize the job to their needs! We pride ourselves in putting the customers needs first!

"efficient cleaned up afterward accurate estimate"

Andy d on October 2024

We are local owned St. Louis insulation provider including, fiberglass/cellusose blown in insulation, Batt Insulation, Spray Foam Insulation, Crawl Space Insulation and Insulation Removal! We come in with the best interest of the homeowner and customize the job to their needs! We pride ourselves in putting the customers needs first!

"efficient cleaned up afterward accurate estimate"

Andy d on October 2024


Avatar for iFOAM Insulation of O'Fallon

iFOAM Insulation of O'Fallon

4.88(
8
)
Approved Pro

iFOAM Insulation of O'Fallon

4.88(
8
)
Approved Pro
Customers say: Quick response
3 years of experience
Free onsite estimate

iFOAM is a U.S.-based insulation franchise fueled by the franchising experts at HorsePower Brands. We specialize in spray foam insulation and also provide best-in-industry blown-in solutions, insulation removal, retrofitting and other specialty project services. At iFOAM, we saw an issue with the industry—a lack of quality and trustworthy services and a clear absence of certified training when it came to spray foam. At iFOAM, we’re flipping the script by providing our certified technicians with the best tools, training and products in the trade and bolstering your experience with prompt, timely communication.

"Job completed as estimated."

Greg M on June 2025

iFOAM is a U.S.-based insulation franchise fueled by the franchising experts at HorsePower Brands. We specialize in spray foam insulation and also provide best-in-industry blown-in solutions, insulation removal, retrofitting and other specialty project services. At iFOAM, we saw an issue with the industry—a lack of quality and trustworthy services and a clear absence of certified training when it came to spray foam. At iFOAM, we’re flipping the script by providing our certified technicians with the best tools, training and products in the trade and bolstering your experience with prompt, timely communication.

"Job completed as estimated."

Greg M on June 2025


Avatar for West County Insulation

West County Insulation

5.00(
6
)
Approved Pro

West County Insulation

5.00(
6
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

We are the top insulation contractor in the St. Louis & St. Charles area providing homes and businesses with a safer and healthier home insulation solution. We're able to install and remove insulation of all types such as blown-in insulation, batt & roll, and even spray foam. If you notice your home has been getting hotter in the summer and colder in the winter, it may be due to old insulation. Give us a call today for a free home inspection so we can give you an idea of your home's insulation levels. We install for all areas of your home including your attic, walls, crawl space, and anywhere your new or existing home might need it. Call the insulation company that St. Louis trusts most, West County Insulation.

"Why West County Insulation is the Best Choice for Your Insulation Needs When it comes to insulation, quality and professionalism matter—and that's exactly what I received from West County Insulation. Fast and Knowledgeable Service Brandon, who provided the initial quote, was timely, knowledgeable, and thorough. He explained all my options and made sure I understood everything clearly, giving me confidence in my decision. Professional and Efficient Installation The installation team, led by Andrew and Isaac, was efficient and professional. They used drop cloths to protect my home and completed the job quickly without sacrificing quality. The owner even took the time to check in after hearing about a fall I had during the job—demonstrating the company’s commitment to customer care. Great Quality at a Fair Price The insulation quality is excellent, and my home is already feeling more comfortable. With competitive pricing and outstanding service, West County Insulation offers great value for your investment. If you’re looking for reliable, professional insulation services, I highly recommend West County Insulation."

ANGELA C on March 2025

We are the top insulation contractor in the St. Louis & St. Charles area providing homes and businesses with a safer and healthier home insulation solution. We're able to install and remove insulation of all types such as blown-in insulation, batt & roll, and even spray foam. If you notice your home has been getting hotter in the summer and colder in the winter, it may be due to old insulation. Give us a call today for a free home inspection so we can give you an idea of your home's insulation levels. We install for all areas of your home including your attic, walls, crawl space, and anywhere your new or existing home might need it. Call the insulation company that St. Louis trusts most, West County Insulation.

"Why West County Insulation is the Best Choice for Your Insulation Needs When it comes to insulation, quality and professionalism matter—and that's exactly what I received from West County Insulation. Fast and Knowledgeable Service Brandon, who provided the initial quote, was timely, knowledgeable, and thorough. He explained all my options and made sure I understood everything clearly, giving me confidence in my decision. Professional and Efficient Installation The installation team, led by Andrew and Isaac, was efficient and professional. They used drop cloths to protect my home and completed the job quickly without sacrificing quality. The owner even took the time to check in after hearing about a fall I had during the job—demonstrating the company’s commitment to customer care. Great Quality at a Fair Price The insulation quality is excellent, and my home is already feeling more comfortable. With competitive pricing and outstanding service, West County Insulation offers great value for your investment. If you’re looking for reliable, professional insulation services, I highly recommend West County Insulation."

ANGELA C on March 2025


S and S Drywall Plaster Paint

5.00(
5
)
Approved Pro

S and S Drywall Plaster Paint

5.00(
5
)
Approved Pro
Super Service Award
4 years of experience
Free onsite estimate

Welcome to S and S Plaster Drywall and Paint, a historical restoration company. We have been dedicated to this craft for over 39 years. We pride the company on reliability, excellent communication, integrity, and quality work. We strongly believe in giving our absolute best in all our projects no matter how big or small. We look forward to earning your business! We operate the old school way, when you're satisfied with our job payment is due. Not a penny before.

"Petey was super quick to respond to my post. He came out to do the estimate quickly and got the job done a few days later as requested. His price was super fair and he and his partner were absolutely fantastic and the job was done perfectly. I will definitely be calling on them again when it comes time to do all the plaster in the house. "

Jesse S on December 2025

Welcome to S and S Plaster Drywall and Paint, a historical restoration company. We have been dedicated to this craft for over 39 years. We pride the company on reliability, excellent communication, integrity, and quality work. We strongly believe in giving our absolute best in all our projects no matter how big or small. We look forward to earning your business! We operate the old school way, when you're satisfied with our job payment is due. Not a penny before.

"Petey was super quick to respond to my post. He came out to do the estimate quickly and got the job done a few days later as requested. His price was super fair and he and his partner were absolutely fantastic and the job was done perfectly. I will definitely be calling on them again when it comes time to do all the plaster in the house. "

Jesse S on December 2025


AP Drywall Services

New on AngiNew on Angi
Approved Pro

AP Drywall Services

New on AngiNew on Angi
Approved Pro
3 years of experience

AP Drywall 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 customers' interests and make their concerns the basis of our business.

AP Drywall 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 customers' interests and make their concerns the basis of our business.



Avatar for Arch City Painting

Arch City Painting

New on AngiNew on Angi
Approved Pro

Arch City Painting

New on AngiNew on Angi
Approved Pro
7 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. The only interior finish jobs we do not accept is staining / varnishing.

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. The only interior finish jobs we do not accept is staining / varnishing.


Avatar for IFFRIG BROTHERS PAINTING, INC.

IFFRIG BROTHERS PAINTING, INC.

5.00(
61
)

IFFRIG BROTHERS PAINTING, INC.

5.00(
61
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

**PLEASE BE PATIENT WITH US** We are currently experiencing a high call volume and a very busy season. Every call is important to us, and we will return your call. Just please be patient with us as it is taking us a little bit longer than usual. Thank you and we look forward to working on your painting project.

**PLEASE BE PATIENT WITH US** We are currently experiencing a high call volume and a very busy season. Every call is important to us, and we will return your call. Just please be patient with us as it is taking us a little bit longer than usual. Thank you and we look forward to working on your painting project.


Avatar for Indoor Comfort Team

Indoor Comfort Team

4.95(
258
)

Indoor Comfort Team

4.95(
258
)
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Our customer-first approach has been at core of Indoor Comfort Team® business model since we first began servicing customers in the St. Louis, St. Charles and the Metro East areas with professional air conditioning as well as heating services back in 1979. Customer-first means honesty and integrity are the foundation of everything we do. From your initial phone call, to our certified and licensed service technician completing the job, to your full satisfaction. Trust, knowledge and competitive pricing have made us one of the most respected and trusted home services companies. But the fact is, we owe our success to our great customers and dedicated team who provide dependable service. Our team is proud to serve our customers.

"Indoor Comfort Team installed my HVAC system in 2019 and I have continued to use them for my regular fall and spring servicing. They consistently do an outstanding job. I had my most recent service done today, and the technician, Sabrina McIntyre, was no exception. She was prompt and efficient and carefully explained everything she checked. I was highly satisfied with her work. "

Steve M on November 2025

Our customer-first approach has been at core of Indoor Comfort Team® business model since we first began servicing customers in the St. Louis, St. Charles and the Metro East areas with professional air conditioning as well as heating services back in 1979. Customer-first means honesty and integrity are the foundation of everything we do. From your initial phone call, to our certified and licensed service technician completing the job, to your full satisfaction. Trust, knowledge and competitive pricing have made us one of the most respected and trusted home services companies. But the fact is, we owe our success to our great customers and dedicated team who provide dependable service. Our team is proud to serve our customers.

"Indoor Comfort Team installed my HVAC system in 2019 and I have continued to use them for my regular fall and spring servicing. They consistently do an outstanding job. I had my most recent service done today, and the technician, Sabrina McIntyre, was no exception. She was prompt and efficient and carefully explained everything she checked. I was highly satisfied with her work. "

Steve M on November 2025


Avatar for St Louis Insulation

St Louis Insulation

5.00(
63
)

St Louis Insulation

5.00(
63
)
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

We are proud to be a trusted Ally with Spire Energy of Missouri ! St Louis Insulation is a full service home maintenance , energy efficiency, insulation and soundproofing contractor that specializes in "Everything Attics, Basements, Crawl - Spaces" and various additional specialty applications ( existing residential buildings). If you dont know who to call, call us! We are a family owned and operated company that takes pride in the services that we provide and loves providing results for our customers. If you are looking for an honest and reliable contractor look no further than St. Louis Insulation! St Louis Insulation offers a unique understanding of building types, methods and construction techniques used during various periods of residential construction. St Louis Insulation provides in depth knowledge of the challenging and fluctuating weather that we face each year in the Midwest and the techniques best used to address and correct the problem while maintaining the integrity of the building. St Louis Insulation offers exceptional service , competitive pricing, and a 100% customer satisfaction guarantee. Our in depth knowledge and continual training of the latest techniques in building science maintains our edge over the competition and provides our customers with unparalleled expertise in a unique industry. St Louis Insulation offers customers common sense strategies and state of the art materials to maximize your investment while providing solid results. St Louis Insulation uses materials and techniques that are effective and commonly last 30 + years. If you're going to do it, do it once and be done! Call or Email Us today or visit stlouisinsulation.com and use our self scheduling tool to arrange a consultation.

"What an outstanding company. Everyone was extremely polite. They kept me informed throughout the entire process and the job site was cleaned completely. Very very pleased with the work and will use them again"

Lori L on January 2023

We are proud to be a trusted Ally with Spire Energy of Missouri ! St Louis Insulation is a full service home maintenance , energy efficiency, insulation and soundproofing contractor that specializes in "Everything Attics, Basements, Crawl - Spaces" and various additional specialty applications ( existing residential buildings). If you dont know who to call, call us! We are a family owned and operated company that takes pride in the services that we provide and loves providing results for our customers. If you are looking for an honest and reliable contractor look no further than St. Louis Insulation! St Louis Insulation offers a unique understanding of building types, methods and construction techniques used during various periods of residential construction. St Louis Insulation provides in depth knowledge of the challenging and fluctuating weather that we face each year in the Midwest and the techniques best used to address and correct the problem while maintaining the integrity of the building. St Louis Insulation offers exceptional service , competitive pricing, and a 100% customer satisfaction guarantee. Our in depth knowledge and continual training of the latest techniques in building science maintains our edge over the competition and provides our customers with unparalleled expertise in a unique industry. St Louis Insulation offers customers common sense strategies and state of the art materials to maximize your investment while providing solid results. St Louis Insulation uses materials and techniques that are effective and commonly last 30 + years. If you're going to do it, do it once and be done! Call or Email Us today or visit stlouisinsulation.com and use our self scheduling tool to arrange a consultation.

"What an outstanding company. Everyone was extremely polite. They kept me informed throughout the entire process and the job site was cleaned completely. Very very pleased with the work and will use them again"

Lori L on January 2023

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Showing 1-10 of 451
Drywall Insulation questions, answered by experts

Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.

Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.

Whether plaster walls should be insulated depends on whether the walls are at particular risk of moisture problems. In many cases, you can insulate plaster walls, while in others, it's a poor decision because of the lack of a vapor barrier. Choose a reputable insulation contractor to help you decide if and how to proceed to increase your home's energy efficiency.

Water freezes at 32 degrees Fahrenheit, but the actual temperature that can cause frozen pipes can vary. Generally, it takes 12 hours for pipes to freeze at 32 degrees Fahrenheit.

Uninsulated pipes can freeze if it’s 20 degrees Fahrenheit or colder for over three hours. If your pipes are insulated, it can take six hours or longer for pipes to freeze. Note that some pipe types freeze more often than PEX pipes. Copper pipes freeze more often because the copper conducts energy and loses heat quickly.

A vapor barrier keeps moisture out of the crawl space, while insulation reduces the amount of unconditioned air—and sometimes moisture—that enters the space. Coupling a vapor barrier with insulation can help prevent humidity and related moisture damage in a crawl space while also making your home more energy-efficient. Just be sure to use insulation that won’t get damaged from moisture, like rigid foam board or expanding spray foam insulation.

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation. 

The Alton, IL homeowners’ guide to drywall insulation services

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