foamsprayerWhat We Offer

Our products are centered on high quality materials and professional installation to create the most energy efficient, comfortable, and healthy living spaces possible. Now you don’t have to compromise on these important qualities for your home or business.

What we don’t offer is just as important. We do not offer conventional insulation systems as our primary product, because we do not focus on initial installed cost. We understand the up-front cost of any insulation system is very low compared to the total construction cost and the ongoing expense of heating and cooling. We are focused on providing the best overall value. If we do things right, by creating a well insulated and sealed environment that can be affordably heated and cooled, you will save money! Our primary goal is to utilize improved technology options to save you money and increase your property value. Comfort, cleaner air, and a quieter living space are just fringe benefits!

Spray Foam Insulation, a Superior Choice

When it comes to building technology, the most efficient homes are insulated with spray foam insulation. People may rationalize that the initial installed cost of conventional insulation systems, such as fiberglass or cellulose, is lower. They are right, but we have not heard one credible and convincing argument about any other insulation system performing better or delivering better overall value. There is no other system proven in testing to be an air barrier; no other system that seals off air leaks and shuts down drafts the way spray foam does; no other system that expands in place; no other system that won’t settle or sag, maintaining top performance year after year without degradation. We researched alternatives before starting our business and selected spray foam as our primary insulation system because it is the best ‚Äì bar none!

open-cellSpray Foam Options

Open-Cell Spray Foam insulation is the workhorse for the St. Louis area. This is a cost-effective, high performance spray foam system that air seals and insulates. It expands in place and fully adheres to the surface to which it is applied. It is a soft, lightweight foam that is blown with water and dries just seconds after application! If you want energy efficiency, but do not need the added features of closed-cell foam, this is the practical option. Of course, our team will help you make the correct choice. Sometimes both foam types are used within the same building to meet the unique needs of the different spaces within.

Closed-Cell Spray Foam insulation less commonly used in the St. Louis area. This material offers the following advantages over open-cell spray foam: higher R-value per inch; effective water vapor barrier; increases building strength by essentially gluing it together with a dense and tough insulating material. The primary disadvantage of closed-cell over open-cell is that it costs more than open-cell.

Exterior Foam systems is another product we also apply. These are very tough foam systems primarily designed as roofing systems. They can also be used to insulate material storage tanks. Special coatings are then applied for heat reflection and enhanced durability.

To access even more detailed information about spray foam materials and systems click Projects in the menu.


Blown Cellulose insulation is composed of recycled newspaper, shredded, treated, and then blown in a cavity to insulate. In addition to being a good air and sound barrier, cellulose insulation is very efficient, and extremely eco-friendly. It uses up to 85% recycled materials, compared to fiberglass which is typically made up of only 30-35% recycled materials.

Dense Pack Cellulose provides another insulation solution with some added benefits depending on the application. There is no settling at the top of the cavity and it also provides uniform R-value. More cellulose is required than standard blown in applications as dense pack has a density of 3.5 pounds per cubic foot or more.

Wet Blown Cellulose can be used in a variety of residential and commercial constructions. We use this material as an ignition and thermal barrier over our spray foam where required. We also have materials that may be applied to absorb sound. A variety of colors are available (such as white, tan, brown, black) for areas where a traditional drywall ceiling will not be installed. See below under Acoustical Sound Absorption to learn more.


Blown Fiberglass is similar to cellulose in that it is ideal for attics and other hard to reach areas. It is resistant to decay and can provide a lower cost and substantial R-value solution for these applications.

Dense Pack Fiberglass is applied in a method similar to dense pack cellulose. Often called a BIB or Blown-In-Blanket system, fiberglass is packed into the cavity at a density about 3 times higher than normal. Increasing the density of the fiberglass creates a better air seal than a fiberglass batt.

Fiberglass Batts offer a uniform R-value of about 3.5 per inch at a very affordable price. When installed properly, batts with a foil or kraft paper facing can provide a partial vapor retarder.

Hybrid Insulation Solutions

We specialize in providing the most comprehensive insulation solutions in the St. Louis area. What sets Foam Engineers apart is our knowledge and ability to utilize several different types of insulation for a given job. These insulation materials are combined into a Hybrid system taking advantage of the air sealing properties of spray foam combined with the value of cellulose or fiberglass. Most of the systems we install today are hybrid systems. Using our expertise to create a truly customized solution allows our clients to achieve superior results at an affordable price.

Block Fill Insulation Solutions

Used mostly in commercial applications to improve energy efficiency, we install PolyMaster R-501 block-fill insulation. This is exactly what the name implies; a special foam used to fill concrete masonry units (CMU) block cores. The foam is injected into the wall cavities by drilling 5/8″ holes once the walls are fully erected. This material is also called foamed-in-place insulation. If you have been to a Wal-Mart, CVS, or Autozone you have probably been kept warm by this expanding foam insulation. If you’d like more information about this interesting insulation product you may visit the PolyMaster website by clicking here.

Acoustical Sound Absorption and Control Insulation

Foam Engineers can also install K13 and Ure-K products. The cellulosic materials primary function is to absorb sound. This is unlike our spray foam materials which control sound by resisting sound transmission (call and ask if you want more details to better understand the difference!). Ure-K is interesting because if can insulate, absorb sound, and resist fire (it is a thermal barrier) all in one application. We use these materials along with spray foam in mostly commercial projects. These products are manufactured by International Cellulose… and Foam Engineers is a certified St. Louis Missouri contractor.

vaccumtestProfessional Services

Our installers are professionally trained and certified to ensure maximum benefits are attained. Several of our staff has also gone through extensive training to become certified energy auditors. This gives us a comprehensive understanding of what it takes to make buildings safe and more energy efficient. Our expertise can even be valuable to make sure proper HVAC sizing is selected. It is very possible that our insulating system will allow smaller, more efficient units to be utilized. We have also invested in thermal imaging and computer modeling to further deepen our understanding of building science. When you choose Foam Engineers, you not only get the peace of mind of a quality materials, you can also rest assured that we understand how to apply it so you get the maximum benefits available!