Products for Commercial Applications

Several of our products are used almost exclusively in commercial construction while others are regularly used in either commercial or residential construction

Block Fill Insulation

Foam Engineers preparing in inject PolyMaster R501 block fill insulation into a concrete block wall. This is at the Wentzville High School in Missouri

Foam Engineers drilling 5/8″ holes to inject PolyMaster R-501 block fill insulation into masonry wall. R-501 is sometimes called R501 or Core Fill foam.

Used mostly in commercial applications to insulate wall cavities and improve energy efficiency, Foam Engineers is a certified installer of PolyMaster R-501 block-fill insulation. Block Fill  (sometimes referred to as core fill) is exactly what the name implies; a special foam used to fill concrete masonry units (CMU) block cores. After drilling 5/8″ holes, the foam is injected into the block masonry wall cavities. The injection holes are then filled with mortar. PolyMaster R-501 is also called foamed-in-place insulation. If you have been to a Wal-Mart, CVS, or Autozone you have probably been insulated by this expanding foam insulation product. If you’d like more information about this interesting insulation material you may visit the PolyMaster website by clicking here. This material is very commonly specified in commercial buildings and is often used instead of other materials such as Core-Fill 500 or Thermco Foam.

Air Barrier Assemblies

Self adhered and spray foam air barriers in one wall assembly.

Foam Engineers installing self adhered (peel & stick) and SPF (Spray Foam) air barriers applied on one wall to create an air barrier assembly. This project was ABAA certified.

Foam Engineers is an ABAA certified contractor (installer) of Fluid Applied, Self Adhered, and SPF (Spray Polyurethane Foam) air barrier assemblies. Air barrier systems are detailed and specified by architects in many commercial buildings where energy efficiency and/or LEED certifications are desired. Air barriers are Foam Engineers is certified in Fluid Applied, Self Adhered, and SPF (Spray Polyurethane Foam) air barrier systems. Because Foam Engineers can apply all air barrier types in accordance with ABAA and manufacturer instructions, we can eliminate the need for multiple contractors on one jobsite. We have been an accredited contractor since 2011.

Spray-Applied Acoustical Insulation

K13 spray-applied cellulosic insulation in ceiling of restaurant to reduce noise levels.

Foam Engineers applied black K13 applied to the ceiling of this St Louis restaurant and nightclub to reduce sound levels.

Foam Engineers is a certified installer of K13 and Ure-K spray-applied cellulosic thermal insulation and acoustical finish materials. These wet applied cellulose sound attenuation materials are manufactured by International Cellulose Company and can be applied to a variety of surfaces including wood, concrete, metal, and glass. Most commonly we apply these materials on metal but we also apply them over spray foam insulation. These materials meet four basic needs. Perhaps most importantly, they absorb sound. Absorbing, or attenuating, sound is different than blocking sound the way spray foam systems do. Secondly, they thermally insulate with R-Values of approximately 3.6 per inch. Thirdly, Ure-K, is an approved thermal barrier. This means it can be spray-applied over spray foam insulation to meet fire code. Lastly, K13 and Ure-K are available in a variety of colors (tan, white, light gray, etc.) and are designed to be left exposed to the interior. Once installed, these materials typically have Noise Reduction Coefficients (NRC) of 0.80 or more. Using Ure-K or K13, in combination with our other products, creates a wide range of possibilities. Common applications are sound studios, night clubs, auditoriums, and convention centers. If you need to reduce sounds levels, or just have better acoustics by reducing reverberations, then call us to learn more about these spray applied cellulose products.

Open and Closed Cell Spray Foam Insulation

Open cell spray foam applied in metal stud walls

Foam Engineers Applies Open Cell Spray Foam Insulation In Metal Stud Cavity To Air Seal And Insulate Exterior Wall In This Commercial Building

Both open cell and closed cell spray foam insulation materials are commonly specified in residential and commercial applications. In general, we see open cell used in interior wall assemblies and closed cell used in interior or exterior walls assemblies. Both open and closed cell spray foam create air tight wall assemblies (air barriers). However, open cell foam provide more R-Value at a lower cost and closed cell spray foams are less vapor permeable. Which is best depends upon the application. We are certified by NCFI, Icynene, Demilec, BASF, and others. For compliance with fire code, Foam Engineers can also install fluid applied thermal and ignition barriers over the spray foam. Whether your requirement is interior, exterior, open cell, or closed cell, we can deliver.


Blown or dense-packed cellulose is sometimes used in commercial buildings, but mostly in “light” commercial or residential. To learn more about cellulose please visit our  “Residential Services” product page.


Fiberglass batts are commonly used in residential and commercial buildings. Foam Engineers can install loose fill (blow in fiberglass) and dense-pack (blow in blanket) fiberglass systems. Most often we apply fiberglass to supplement a spray foam insulation system. To learn more about fiberglass please visit our “Residential Services” product page.