What 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, create a well insulated and sealed environment that can be affordably heated and cooled, you will save money! Our primary goal is to utilize improved technological options to save you money and increase your property value. Improved comfort, cleaner air, and a quieter living space are just fringe benefits!

Spray Foam Insulation – a Superior Choice

residential servicesWhen 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 than spray foam. There is no other insulation material 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 – bar none!

Spray 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 is also 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. Foam Engineers can evaluate your situation to help determine the best solution for you. There is no choice that is best for all situations.

Exterior Foam systems are also applied by Foam Engineers. These closed cell spray foam materials are more dense foams (compared to interior foams) primarily designed as material tank insulation or roofing materials. The foams are dense because they must withstand snow, rain, hail, and other conditions which could degrade a lesser system. Special coatings are applied over the foam for heat reflection and enhanced durability.


Cellulose 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.

Blown Cellulose insulation is the cellulose material blown loosely into the space to be insulated. Our most common use for cellulose is blowing it into attic spaces.

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 pounds per cubic foot or more.

Fiberglass Insulation

Foam Engineers installs fiberglass insulation in three primary ways; blown; dense packed; and batts.

Dense Pack Fiberglass Insulation in Walls Between Garage and House (common walls).

Dense Pack Fiberglass Insulation

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 low cost way to achieve high R-Values. We like to use blown fiberglass in hybrid insulation systems discussed below.

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. We mostly install batts in garages or other application where initial price is more important than long-term energy savings.

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.

Open Cell, Closed Cell, and Fiberglass Dense Pad (Blow in Blanket) all Shown in this St Louis House

Hybrid insulation system by Foam Engineers. Picture shows open cell, closed cell, and dense pack fiberglass insulation