Difference Between Polyurethane Vs. PU Foam

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When it comes to insulation, there are many types of foam that can be used in construction. The most common types include polyurethane (PU), polystyrene (EPS), and polyisocyanurate (PIR). There are also other less commonly used options as well.

Kinds of Rigid Foam

Polyurethane is a type of rigid foam insulation that’s made by combining two chemicals:

The first chemical is called an isocyanate, or “NCO” for short. This is the material that will harden into the actual foam product after being mixed with other chemicals like water or alcohols. These chemicals react with each other when they come into contact with air or moisture, which causes them to expand into large bubbles known as “cells” before finally hardening completely solid at room temperature. The process creates a lightweight but very strong material that can be used in many different applications, including insulation products like spray foams and boards made from polyurethane panels.

The second chemical in this case would be something called a “polyol” – also known as glycols – which acts as an inert additive for stabilizing and improving adhesion properties among other things such as reducing cost per square foot by making up only about 10% of total raw materials consumption compared to 20-30% consumption rates seen when using pure NCO materials alone without any stabilizers present; this means less water or alcohol will be needed during production since these additives make it possible to add more glycol than pure NCO without changing expansion ratios too much so there will not need so much mixing time required later down the line at application sites where products could otherwise cure prematurely if left outside their ideal storage conditions due to poor manufacturing controls over temperatures inside tanks on assembly lines where mixtures sit waiting until they get shipped

Polyurethane is a type of rigid foam insulation that’s made by combining two chemicals:

Polyurethane is a type of rigid foam insulation that’s made by combining two chemicals: polyol, which consists of long-chain molecules, and isocyanate, which forms cross-links between the molecules.

Polyurethane has many benefits over other types of insulation. It’s highly resistant to moisture, so it won’t lose its effectiveness or get moldy if it gets wet. It also acts as an air barrier to keep heat in and cold out during winter months.

But while polyurethane can be used for walls and ceilings (as well as floors), it doesn’t last forever: The adhesive will eventually fail over time due to UV rays from sunlight exposure; this means you’ll need to replace your window panes every few years at the most depending on where you live based on how much sun exposure they receive on average each day/year (essentially anywhere from 5-15 years).

There are many different types of polyurethane foam, but the most common use for them is in insulating buildings.

As the name suggests, PUR foam is used for insulating buildings. It’s one of the most popular types of insulators because it’s easy to use and is also very effective at stopping heat from escaping. While PU foam can be used as insulation as well, it’s more commonly found in other applications such as cushioning or sealing things like duct work and windows.

Difference Between Polyurethane Vs. PU Foam: A blog post comparing PU foam and other rigid foam options.

The difference between polyurethane foam and polyisocyanurate is that they are different types of rigid insulation, both used to insulate a home. Polyurethane is typically used in residential construction projects, while polyisocyanurate is usually found in commercial buildings and industrial applications. Both types of foam are very effective at blocking heat transfer, but each has its own strengths and weaknesses.

Shapes and Sizes

Polyurethane is available in a variety of different shapes and sizes. There are sheets, panels, rolls, blocks and tubes (pictured below) which can be used for many different applications. The blocks are typically used for construction applications like doors and windows as well as some furniture parts. Tubes are often seen in the automotive industry where they’re used to make bumpers or other parts of vehicles that require flexibility without compromising strength.

The rods (pictured above) are perfect for creating large structures like walls with openings such as windows or doors that need to be trimmed out later on after installation is complete – some people even use rods in their home projects! Polyurethane slabs measure out at 3’x3’x3′, making them ideal for commercial stair treads as well as walkways around pools or other structures located outdoors where durability is key due to frequent foot traffic over time.”

Transparent plastic sheets or tubes made from polyurethane are commonly used to replace broken glass in windows, skylights and greenhouses.

  • Polyurethane is a type of rigid foam insulation. It is made by combining two chemicals: one that contains carbon and another that contains hydrogen. These chemicals react to each other to create solid polyurethane foam.
  • Polyurethane can be used in many places around your home, including walls and roofs, as well as in the attic—or anywhere else you might want to add some insulating power! If you’re looking for ways to save money on your energy bills, increasing the thickness of your insulation will help seal out drafts so heat stays inside where it belongs!

PVC pipes are also made from polymers (more specifically chlorinated polyvinyl chloride). They’re commonly found in plumbing systems because they’re flexible enough not only withstand high pressure but also withstand being bent without breaking apart over time.”

Where to Find Them

You can find PU and PIR foam in the roofing, construction and furniture industries. PIR is also commonly used as a soundproofing material in recording studios and recording rooms.

EPS is most commonly used in packaging as an insulator, but it’s also used for insulation around pipes or wires to protect against corrosion.

Expanded polystyrene can be found in packing peanuts and disposable cups, but it’s also used for insulation in construction.

Expanded polystyrene (EPS) is a type of rigid foam insulation that’s used in construction. It’s commonly found in packing peanuts, disposable cups and egg cartons.

Polyisocyanurate, or PIR, is less common than EPS or PU, but not by much.

A final type of rigid foam insulation is polyisocyanurate, or PIR. PIR is the most expensive type of rigid foam, and it has properties that make it more suitable for fire-resistant applications than EPS or PU.

It’s also the most dense insulation available, which means that in addition to being resistant to fire, it’s a great choice for use in areas with high moisture levels. Plus, because it’s so dense—70% heavier than solid EPS—a smaller amount will do the trick when you’re filling your walls with this material!

But don’t go buying any old gallon at Home Depot just yet; there are some drawbacks to using PIR as well: It needs more care than other types of insulation because if left exposed to water for long periods of time (like during construction), its performance could be compromised over time due to degradation from exposure to sunlight and high temperatures.

If you’re wondering what material would be best for your project or home improvement efforts, you may want to consider how each one compares with the others.

If you’re wondering what material would be best for your project or home improvement efforts, you may want to consider how each one compares with the others.

  • Polyurethane foam is a good choice for all climates. When choosing a material for your flooring, it’s important to take into consideration what type of climate you live in and whether or not the material will stand up against moisture and humidity. If you live somewhere that experiences extreme weather conditions often, such as Florida or Texas, then polyurethane foam insulation can provide excellent protection against heat transfer through conduction.
  • Polyurethane foam is more rigid than PIR insulation but less rigid than EPS insulation. This means that it’s easier to install on walls without causing damage like PIR would do if used incorrectly (and most people don’t know how best). It also means that when installed correctly with plenty of adhesives/glues/sealants between boards etc., they won’t fall apart over time like EPS might due its lack of strength compared

There are three main types of rigid foam insulation, including polyurethane (PU) and polyisocyanurate (PIR)

There are three main types of rigid foam insulation, including polyurethane (PU) and polyisocyanurate (PIR).

Polyurethane is one of two types of rigid foam insulation, along with PIR. It’s made by combining two chemicals: an isocyanate and a polyol. The most common type of PU foam used in residential construction is called closed-cell spray polyurethane foam (SPF), while open-cell SPF has less insulating value but may be more comfortable to touch.


From the above comparison, we can see how each material differs from one another. The differences between these types of insulation are significant enough that you should carefully consider which one is right for your application before making a purchase decision. If you have any questions about PU foam, feel free to contact us at 800-658-3444 or [email protected] We’re happy to help!

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