Key Benefits of Extruded Polystyrene (XPS) Insulation

Are you considering using green insulation in building or renovating a residential or commercial property? If so, that’s great! There are now several types of green insulation to choose from. Extruded Polystyrene, or XPS, is one of the most popular. There are many benefits to this amazing new material.

XPS (extruded polystyrene) insulation offers several advantages, including:

  1. High R-value: XPS insulation has a high R-value per inch, which means it provides excellent thermal insulation, helping to reduce energy consumption and associated costs.
  2. Moisture resistance: XPS insulation has a closed-cell structure that makes it resistant to water and moisture, which can prevent damage caused by mold, mildew, and rot.
  3. Durability: XPS insulation is a strong and durable material that can withstand compression, making it suitable for use in heavy-duty applications, including below grade use.
  4. Lightweight: XPS insulation is lightweight, making it easy to handle and install, which can help to reduce labor costs and installation time.
  5. Fire resistance: XPS insulation can withstand temperatures up to 165 degrees F before deforming or degrading.
  6. Chemical resistance: XPS insulation is compatible with many types of chemicals but is notably incompatible with hydrocarbons, aromatic hydrocarbons, and chlorinated hydrocarbons. Your choice of adhesive for XPS installations should take this into account as many glues use hydrocarbon-based solvents. Many manufacturers have suites of products designed to be used together to meet code requirements and to maximize insulation efficiency and longevity, to maximize moisture resistance, and to reduce air leakage. For example: tapes, adhesives, air and moisture barriers, and fire resistance products.

Here are some basic facts about this eco-friendly insulation product.

No Mildew

As you probably know, mold and mildew can be very dangerous. They can cause many numerous health problems in both people and pets, and can also contribute to structural damage and problems in buildings. One of the best things about XPS is that it does not absorb moisture, so it does not present a favorable environment for mold to grow. In fact, it serves as a barrier against moisture.

No Leaks

XPS boards typically come in an interlocking pattern that provides a tight, energy-efficient seal, stopping air leaks and gaps. This helps ensure that the insulation is doing its job, and not letting cold or hot air in or out. This will help maintain the temperature inside your building, making it more energy-efficient.

Lower Heating & Cooling Costs

The whole point of insulation is to keep buildings cool in summer and warm in winter. Inadequate insulation can definitely have an impact on your heating and cooling costs, and can cost you quite a bit of money. XPS is highly efficient at this, and can help reduce the amount of energy needed to maintain temperatures in buildings.


Another great thing about XPS is that it retains its insulating properties over time. This can save you money in the long run, as you won’t be faced with slowly rising heating costs.


XPS is a very versatile product. It can be used for a variety of purposes, including below grade, below slab, basement walls, and re-siding. It’s also very lightweight, and can be used with many different building materials.

Environmentally Friendly

Last but not least, XPS is very environmentally friendly. Its manufacture does not result in harmful wastes or by-products. We only have one planet, so it’s up to all of us to protect it.


When using XPS, it is very important to install the product properly, as incorrect installation or exposed areas are violations of many building codes. Correct installation minimizes air leakage and maximizes efficiency and cost savings in winter and summer.

To learn more about green insulation, please reach out to us here at Green Insulation Group. We are happy to help!