Spray foam insulation and its benefits
Regardless of whether looking to insulate a new building or modernize an old one, homeowners are finding spray polyurethane foam, or SPF, an increasingly viable option. Essentially a plastic spray applied; It can form 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 and 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 highly commendable resistance to heat transfer, but also for its exceptional ability to reduce unwanted air infiltration through joints, cracks, or seams.
Types of SPF
Spray foam insulation is mainly of three types and is used for specific purposes. Are –
- High density SPF used primarily for exterior and roof applications.
- Medium density SPF used primarily for interior cavity filling, continuous insulation, and non-vented attic applications.
- Low-density SPF is best used for unventilated attic applications and interior cavity fillings.
Each type has its own unique advantages and typically an SPF contractor takes into account the building, climate, project, 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, two-component foam sealant and high pressure and low pressure insulating foam.
Advantages of SPF
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 benefits are highlighted below: –
- Powerful insulator
Due to its expansive nature, SPF insulation is much more effective than other types of insulation and effectively seals all nooks and crannies. With it, you have the assurance of not being exposed. The strength value of the method, 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 homeowner and homeowner to save significantly on their energy bills. Unlike other methods that save about 30% on energy bills on average, SPF insulation is known to reduce energy bills by 50% or more.
- Hermetic seal
One of the main reasons for high 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 of the place. Its airtight seal is so powerful that studies suggest that it is approximately 24 times less permeable than any other type of insulation to air filtration.
- Moisture barrier
Holes or cracks in walls or other places not only allow air, but also moisture and water to penetrate the interior of the house. With their known potential to cause harm, it is imperative to keep them at bay. Being impervious to water, SPF not only fantastically protects the attic and low space from potential moisture and leaks, but in the flood scenario for any reason, SPF does not absorb moisture and water like other materials. This impermeability to water helps and protects any living space.
- Avoid mold
SPF is made up of inert polymers that block any possible food source for mold or bacteria. Therefore, no mold and mildew can thrive and the house is insulated against them. Closed cell SP is better at this trait than open cell SPF.
- Long shelf life
The inert polymer in SPF 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.