Table of ContentsShow
Spray foam insulation is a material that is a composite of two chemicals, usually isocyanate and polyol resin. The chemicals are kept in two different containers until they are combined with pressure or liquid. They only meet when they come out of the spray gun.
The foam is made up of little cells that can be sprayed into the smallest places. This helps to insulate your home and can also help with soundproofing.
The substance can also keep pests out of your home. If you need to know more about what spray foam insulation is, you can do some research. You can look at https://www.771foam.com/spray-foam-insulation/ to learn more. They have the information that you need.
How Does it Work?
To make it work, the liquid must be sprayed into an area where it turns into foam. It is commonly used in homes and businesses. It helps to save energy and helps to provide comfort in your home.
To prepare you to need to make sure that the area that you are using it in is clean and clear of everything. You want to make sure that the area is clean and dry. You cannot use it if the area is wet – it will not work correctly.
You will need a specialized spray gun to apply the foam. It starts as a liquid mixture that turns to foam once the liquids are mixed and hit the air. The way it expands assures that it will get into every nook and cranny.
It expands to several times its volume once you spray it. By doing this, it creates an airtight seal. It takes a while to cure and that depends on the type of foam and the atmospheric conditions.
It has insulation properties that provide heat transfer resistance. Because of the way it is structured, it traps moisture and air. There are two types of foams – open-celled is better than closed-celled at providing better insulation value.
Types of Spray Foam Insulation
Open cell insulation is the first type of spray foam insulation. This means that the cells do not close completely. See more about that here. This type expands up to three inches in each pass, and once the foam is dry it stays soft. The propelling agents are usually carbon dioxide and water.
If you want the most effective barrier against sound and air movement, you will choose the open cell. Because it is an open cell, however, it will be more apt to take in moisture and vapor. It will require a vapor barrier to prevent this from happening.
This type creates an R-value of about R-13 for a two-by-four area and about R-19 for a two-by-six area. Since it expands so much as you spray, it is difficult to add a second layer. You will only be able to make one application, or you will end up wasting extra foam.
This is similar to open cells because they both create air barriers. As the name says, however, these cells are completely closed. It can improve structural integrity because it is so rigid.
It is more effective against moisture and vapor than the open cell. It also has an increased R-value, more than the open cell. You can also add more layers of this type because it does not expand as much.
Unfortunately, the closed cell uses hydrofluorocarbons to expel the foam. This can be dangerous for the environment. Open cells are more environmentally friendly.
Pros and Cons
There is great coverage with spray foam insulation. It has much higher coverage than fiberglass insulation. It can also fit into more nooks and crannies than fiberglass insulation.
Spray foam does not fall into the stud bay like fiberglass and spray insulation. This means that it will last longer than both. It is sticky when it is sprayed and therefore stays in place when it expands.
It has a higher R-value than other forms of insulation, as well. This is because it expands well and fills in all the nooks and crannies. It also forms cells that add to the R-value.
The closed cell creates an air and vapor barrier all in one. Homeowners like this factor because it can save time and money by adding both of those features separately.
It is also good for do-it-yourselfers because it is so easy to use. There are kits that allow a homeowner to do it on their own. The kits come with portable tanks that can be easily used to spray the insulation in all areas.
Cons include the fact that it is expensive – more expensive than fiberglass. It is the most expensive form of insulation. Most people hope that the energy savings will overcome the initial cost.
It is also very messy and hard to clean up. You will need to wear protective gear while spraying, especially if you are a beginner. Beginners will not be able to spray exactly where they want to begin with and will create a mess.
Spray foam insulation is an effective way to insulate your home, although it can be expensive to do so. You can get into all the nooks and crannies of your home with it. Depending on what type you use, you can also get an air and vapor barrier without having to add extra.