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Advantages of Spray Foam Insulation

Spray foam insulation is applied on-site, so it conforms to the shape of the surface it is applied to, creating a tight building envelope that enhances energy efficiency.

Spray foam insulation is made by mixing together liquids with chemical components to create an expanding foam that can insulate, seal gaps, and form air, moisture, or vapour barriers. The chemical components react when mixed, and the foam starts expanding immediately.

Spray foam is versatile, and that’s why it’s one of the most popular insulation solutions. It can be used to seal wall cavities, crawlspaces, attics, exterior walls, and small gaps and cracks in a house. Spray foam products can reduce air infiltration and air movement, too, which helps minimize energy usage, and limits the intrusion of pollutants. Overall, spray foam makes the home more comfortable and energy-efficient.

If you are wondering if you should get spray foam insulation, here are some of their advantages:

High-Density Spray Foam

  • 3 lbs./cubic ft. 
  • Closed-cell foam
  • R-Values starting at 5.5 per inch
  • Typically used for roofing and other exterior applications

Advantages of High-Density SPF 

High-density SPF is often used by builders when the project requires high insulation strength and values. As you can tell by its name, this spray foam is significantly denser than other types. This is an excellent choice for roofing and exterior insulation due to its seamless nature. High-density spray foam can also minimize energy costs because of its thermal resistance properties. It also improves protection against both water and air infiltration and makes the structure stronger. As it makes the building stronger, it can help reduce damages that typically happen when there are extremely strong winds.

Medium-Density Spray Foam

  • 2 lbs./cubic ft.
  • Closed-cell foam
  • R-Values starting at 5.7 per inch
  • Typically used for continuous insulation, unvented attic applications, and interior wall cavity fill

Advantages of Medium-Density SPF

This is applied either as low or high-pressure two-component spray foam. It is usually used for continuous insulation, to fill interior wall cavities, and for unvented attics, too. Because it is a closed-cell spray foam, medium-density spray foam is preferred when there’s a need for the highest R-value insulation per inch. It is effective as it acts as an air and water barrier as is typically unaffected by moisture and even rain. It’s also effective in noise reduction. 

Low-Density Spray Foam

  • 0.5 lbs./cubic ft.
  • Open-cell foam
  • R-Values starting at 3.6 per inch
  • Used for interior wall cavity fill as well as unvented attics

Advantages of Low-Density SPF

Low-density spray foam or open-cell foam, as it’s also called is applied for continuous insulation and air sealing. Its open-cell structure makes the hardened foam more flexible than others. Low-density foam is applied either as low or high-pressure, two-component polyurethane spray foam. It can be applied to unvented attics, ceilings, ducts, walls, crawl spaces, and others. While it’s also recognized as an effective air barrier, low-density foam is permeable to both vapour and moisture. 


Spray foam insulation is a highly efficient and long-lasting product, making it a good insulation solution for your home. Spray foam insulation helps keep the home warm in the winter and cool in the summer. It can last up to 20 years and can be applied to attics and walls in your home, providing great insulation.

PolarTech Spray Foam can provide you with insulation solutions in Saskatoon and nearby areas. Get in touch with our experts to know more about our insulation installation and removal services.

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