Wholesale Insulation Supplier in St. Louis, MO

5555 St Louis Mills Blvd. Suite 100
Hazelwood, MO 63042

Why Make IDI St. Louis Your Wholesale Insulation Supplier

IDI is the premier wholesale insulation supplier St. Louis residential and commercial contractors choose for all things insulation. We stock a full line of insulation supplies St. Louis area contractors rely on for their projects, including fiberglass batts and blowing wool, cellulose, high-pressure foam, low-pressure foam and much more. And, with a nationwide network, IDI is capable of supplying any of the insulation equipment you need with fast delivery — so you can get your job done right, and on time.

Contact Us

Or Call us at 314.291.4500

The best insulation distributor in St. Louis.

Our main goal is to be more than an insulation supplier to our St. Louis contractors. Our services and support aim to help business owners and their crew grow their capabilities and finish projects that set the standards for the industry.

If you are looking for the Peoria, IL location we are sorry to inform you that it is no longer in service. Our St. Louis, MO location will now be serving the Peoria, IL area. For any questions or concerns about the closed location, contact our St. Louis, MO branch.

Who we are

At IDI, our motto is, “We work for you!” So, you can rest assured the wholesale insulation products we carry are top-notch, and the hands-on training we can provide your team with covers every aspect of your new equipment. Get industry-leading support when you’re choosing equipment and materials for your projects. But, most importantly, feel confident your work will be up to the standards your clients expect and never worry about missing a deadline with our fast on-site delivery.

Are you ready to get started?

Contact our team today to experience the IDI difference, and see why contractors have made our St. Louis team their dedicated insulation supplier.

Contact IDI of St. Louis

St. Louis Specialties

Our sales and management teams of St. Louis have over 50 years of combined industry experience. We can assist our customers with any facet of their business, from management to training, on-call troubleshooting and everything in between. Here are a few ways we can help:

Spray foam rigs in the back of a semi trailer

In-Person Training

Person in protective gear holds spray foam insulation gun

Rig Eval Events

One person demonstrates how to install spray foam insulation while another looks on

On-site Tech Support

Additional Specialties

  • Wide range of equipment, products and accessories in stock
  • Wholesale fiberglass, SPF, weatherization, foam board, mineral wool products and more
  • Roofing foams, coatings, supplies and other metal building insulation equipment
  • Fast and accurate deliveries
  • Turnkey SPF rigs and trailers
  • Graco, Krendl, PMC and more leading-brand equipment in stock
Man installing pink fiberglass insulation


Spray Foam Insulation

man installing Owens Corning® PINK Next Gen™ Fiberglas™ Insulation on wall

Fiberglass Insulation

blowing insulation in wall

Blowing Wool Insulation

Female technician in safety gear handling insulation installation

Cellulose Insulation

IDI 2800-G insulation blowing machine frontal view

Insulation Blowing Machines

spray foam insulation

Training Classes

Areas we serve

Our IDI St. Louis team consistently sets the bar for service and support in the insulation industry. With a core delivery radius of 200 miles, we offer our customers in outlying areas prompt delivery, often within 36 hours of placing the order. View our service areas below and contact our team today to get started.


St. Louis, MO

5555 Saint Louis Mills Circle, Hazelwood, MO, USA


To contact America’s Insulation Source, please give us a call or fill out our form and we will promptly get back to you.


Have a question on anything insulation, pricing, or want to place an order? With hundreds of products and countless services, our experts will help walk you through the process of getting ready for your next project. Get in contact with our team today for help and guidance on the right products and best techniques for you and your business.