Architecture : Insulation Contractors – Giovanni Lococo – Medium

Insulation Foam: Spray and Rigid

Of the types of insulation available, foams are growing in popularity. They are lightweight, efficient, easy to install, and spray foams fit into unique and tight spaces. Many foams not only meet but also beat building code regulations, and they have a good cost. Suffice to say, it’s a lot of bang for your buck — and that’s not including the saved energy costs!

Spray Foam Insulation

Cementitious, Phenolic, and Polyurethane. These three are the big names in spray foam insulation, and they each have their own benefits.


A cement-based formula, Cementitious Spray Foam Insulation works for thermal and acoustic insulation. Despite similarities to concrete, this spray foam is lightweight and can be scraped away for access to wiring. While it’s insulating power is comparable to fiberglass, it’s cost is similar to polyurethane. After curing, Cementitious Foam is water resistant but water permeable; it is also nontoxic and nonflammable.


A resin consisting of aldehyde and phenol, Phenolic Spray Foam Insulation uses air as a foaming agent. Phenolic Foam is fire retardant, and it boasts a low smoke level and a high water resistance.


The more common of the spray foams, Polyurethane Spray Foam Insulation is applied as a light liquid film that quickly expands to 120 times its size to fill the entire space needing to be insulated. Polyurethane is further split into three densities, with the lowest being an “open cell” foam and the medium and highest being “closed cell.”

Rigid Foam Insulation


Polystyrene Foam Insulation comes in two forms: Expanded (EPS) and Extruded (XPS). EPS is the more versatile with the lowest thermal conductivity (so it keeps the heat out better) and the lowest cost. XPS is the more recognizable, available in blue, green, and pink. It is typically used in below grade applications or walls, and is recyclable.


Polyisocyanurate Laminate Foam (PIR or Polyiso) are popular for use as insulating boards in construction. These thermoset plastics char in fire conditions rather than melting, and they are compatible with traditional commercial roofing systems since they are resistant to molten asphalt and construction adhesives. Since the foam is applied to a material during production, these boards always come “faced.” PIRs can be faced with plain or reinforced aluminum foil, fiberglass-reinforced cellulosic felt, glass, or rigid boards.


Rigid Polyurethane Foam (PUR) is the most recognized type of rigid foam insulation. Energy efficient, high performance, and versatile, PUR is a wise choice for residential and commercial insulations. Of the commercially available foams, PUR has some of the highest insulating values, and it has a high mechanical strength.

What Comes Next?

We understand that energy efficiency and beating the Texas heat are high priorities in your build. Energy lost due to improper insulation can lead to quickly deteriorating HVAC equipment, higher costs, and, frankly, being uncomfortable. At Rose Insulation, we want to help you bring out the best in your build. Insulation is our specialty, so let us help you make wise decisions now to avoid higher costs later. Give us a call today! Choose the right insulation contractors!


Please enter your comment!
Please enter your name here