What is Polyisocyanurate and How to Find the Best One for You?

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If you’ve been looking around the web for information on polyisocyanurate, chances are you’re confused. There’s a lot of information about this product out there and it can be hard to distinguish between sales hype and real facts about polyisocyanurate. In this blog post, we’ll clarify what polyisocyanurate really is, explain its advantages and disadvantages, talk about how you can find quality polyisocyanurate in the market, and give you some tips for using it in your home. By the end of this article you should have a better understanding of what polyisocyanurate is, how it works and whether or not it’s right for your home.

What is Polyisocyanurate?

Polyisocyanurate is a type of rigid foam insulation made from polyisocyanurate resin, which is a thermoset plastic. It’s commonly used as an insulating material for building construction, both residential and commercial. It can also be used in furniture, appliances and other consumer products like electronics cases.

Advantages and Disadvantages of Polyisocyanurate

Advantages: Polyisocyanurate is a colorless and odorless plastic foam insulation material with high R-value. It’s also lightweight, flexible and easy to handle. You can find it in various densities ranging from 1 to 25 pounds per cubic foot (pcf) with an R-value ranging from 3.6 to 5.0 per inch of thickness. The density and R-value are dependent on the manufacturer, so make sure you check the specs for your specific product if you want to know exactly what you’re getting into before purchasing polyisocyanurate insulation.

Disadvantages: Polyisocyanurate insulation does not last forever; it’s more subject to degradation over time than other types of foam insulations such as polyurethane or EPS (expanded polystyrene). This means that if you have any leaks in your home’s structure (soil or water), they could eventually get into your walls and damage them structurally over time (we don’t recommend this!). Another issue some people experience is “polyiso itch,” which is caused by exposure to formaldehyde when installing new spray foam products like those made using 2 lb/ft3 density rate boards.”

How to Choose Quality Polyisocyanurate in the Market?

If you’re looking for quality polyisocyanurate insulation, the R-value and thickness are two good indicators of its performance. The density of the product is also important because it can tell how strong or weak it is.

The best way to choose polyisocyanurate insulation is by checking these three aspects:

  • R-value – the higher the number, the better it will insulate your home or commercial space. You should look for a polyiso product with an R-value between 3 and 5 per inch (1/2 foot). This means that if you have 2 inches of polyisocyanurate in your wall, we recommend getting something with an R value between 6 and 10. The more layers you have in your wall, however, the less effective each layer will be at insulating because there will be more air between them; therefore, our recommendation above still holds true when considering whether or not to add more layers on top of what has already been installed.* Thickness – generally speaking thicker materials are better than thinner ones because they provide better protection from cold weather conditions (such as snowstorms). However some buildings may have other requirements such as ease of installation which may make thinner sheets preferable even if their performance specs are lower than those provided by thicker alternatives.* Density – this refers to how solidly bonded together each cell within a particular type material actually behaves at any given time during use while under stress loads such as wind pressure exerted upon surfaces that could cause damage like cracks when using weaker versions like cheaper options made with less dense materials which might not hold up well enough against outside forces acting upon them


So, what is polyisocyanurate?

Polyisocyanurate is a type of rigid foam insulation that can be used for your home. It’s often referred to as “polyiso” or “polyisocyanurate foam,” and it’s one of the most common types of insulation found in homes today.

Why should you use polyiso?

There are many reasons why people choose to add polyiso to their walls, ceilings, floors and crawlspaces. These include:

  • Greater comfort – Because it’s an air-permeable material that doesn’t trap moisture inside like traditional fiberglass insulation does, it helps keep your house warmer in winter and cooler during summer months by letting air flow through more easily (something known as R-value). This means less energy use overall! What’s not to love about that?

Polyisocyanurate is a type of rigid foam insulation that can be used for your home, but it needs to meet certain criteria.

Polyisocyanurate is a type of rigid foam insulation that can be used for your home, but it needs to meet certain criteria. For example, you need to know the R-value of the Polyiso insulation that you are going to use. The R-value is a measure of how well an insulator can resist heat transfer and it varies based on how thick the material is and how much air space there is in between two layers of this material.

The thickness and density also determine what kind of application will work best for your project as some applications may require different types of PolyIsos than others would need.


With all this information, you’re ready to go out and find the best polyisocyanurate for your home. Whether you want something more environmentally friendly than traditional foam or just really like how it looks. Now that you know how to choose quality insulation in the market, it should be easy knowing what to look for when searching for one on your own. We hope this article has helped you make an informed decision about purchasing polyisocyanurate products!

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