Whether looking to insulate a new building or retrofit an old one, homeowners are finding spray polyurethane foam or SPF an increasingly viable option. Essentially a spray-applied plastic; it can form a continuous insulation as well as a complete air sealing barrier on walls, corners and all contoured surfaces. In this process, the unique liquid contents are mixed and chemically reacted together rapidly to expand on contact and form the foam to provide the necessary seal and moisture barrier. This form of insulation is highly preferred not only for its extremely commendable resistance to heat transfer, but also for its exceptional ability to reduce unwanted air infiltration through joints, cracks, or seams.
FPS Types
Spray foam insulation is mainly of three types and is used for specific purposes. They are-
- High density SPF that is used efficiently for exterior and roofing applications.
- Medium density SPF used primarily for interior cavity filling, continuous insulation, and unventilated attic applications.
- Low density SPF is best used for unventilated attic applications and interior cavity fillers.
Each type has its own unique advantages, and typically an SPF contractor takes into account the building, the weather, the project, the budget, etc. and suggests the best option to choose. Aside from the structure of the foam, its delivery and installation method also plays a critical role. It is also of three types, that is, high-pressure and low-pressure, two-component foam, and insulating foam sealant.
Advantages of FPS
While each type of SPF has its own unique advantages and disadvantages, there are some common benefits and advantages to choosing this method, especially over fiberglass as an insulation medium. Some of its key advantages are highlighted below:
- powerful insulator
Due to its expansive nature, SPF insulation is much more effective than other types of insulation, effectively sealing all nooks and crannies. With it, you have the security of not being exposed. The method strength value, which is its ability to provide a tight seal, is the best on the market for R-6.
- Lower energy costs
Due to its high efficiency as an insulator, it allows the property and the owner to save significantly on their energy bills. In contrast to other methods that save around 30% on energy bills on average, SPF insulation has been known to reduce energy bills by 50% or more.
- hermetic seal
A big reason for mountainous energy bills is air leaks. However, no method takes better care of it than SPF. They can easily seal any holes or cracks in the smallest and darkest places. Its airtight seal is so powerful that studies suggest it is about 24 times less permeable to air infiltration than any other type of insulation.
- moisture barrier
Any holes or cracks in the walls or other places not only allow air, but also moisture and water to penetrate inside the house. With their known potential to cause damage, keeping them at bay is imperative. Being impermeable to water, SPF not only fantastically protects the attic and basement from potential moisture and leaks, but in the event of flooding for any reason, SPF does not absorb moisture or water like other materials. This impermeability to water helps and protects any living space.
- deters mildew
SPF is made up of inert polymers that block any potential food source for mold or bacteria. Therefore, mold and mildew cannot thrive and the house is insulated against them. The closed cell SP is better at this trait than the open cell SPF.
- Long useful life
The inert polymer of SPFs makes it easy for them to have an indefinite shelf life. Therefore, homeowners and businesses are not required to re-insulate for years. Once installed, it can last up to 20 years or more with optimal performance.