Foam insulation is made up of a polymer (such as polyurethane or modified urethane) and a highly reactive foaming agent. The two components are kept separate until they reach the nozzle of the spraying machine when they quickly react creating a substance that can expand up to 100 times its original size.

The foam is sprayed either directly onto the surface or through holes (in the case of retro-fitting) and expands to fill even the smallest nooks and crannies making an air-tight seal and thus eliminating the escape of air, energy, and money.

There are two types of spray foam insulators: open-cell (isocyanurate) and closed-cell (polyurethane). Open-cell types allow for the infiltration of vapor, while the closed-cell provides superior insulation and serves as a vapor barrier.

Each type has its advantages in different situations. Review the following advantages and disadvantages to see if this material is right for you.

Advantages of spray insulators:
• They have higher R-values per inch than traditional batted fiberglass. R-value is the measurement of thermal resistance used in the construction industry today. The higher the number a material is, the more effectively it insulates.
• It blocks air flow by making a tight seal around wires, electrical boxes, and in all tight spaces.
• It can serve as a vapor barrier when a closed-cell variety is used.
• It acts as a sound dampener as well.
• It can be used to retrofit a home for thermal efficiency.
• When retrofitting, it is the cleanest (no dust) and most effective option.
• It can actually improve the structural stability of the building.
• It can be used in places where traditional materials cannot such as between rafters and joints.
• When the house expands and contracts the material does the same, always providing that air-tight seal.
• It can be applied in small quantities.
• It does not shrink, loose shape, or biodegrade.
• Some kinds are fireproof.

Disadvantages of Spray Foam Insulators:
• Installation is difficult and requires special equipment. A small area may be attempted by a novice, but most jobs ought to be handled by a certified installer. They have the experience and the ability to the wall cavity without too much over-spray.
• Because a professional installer is needed, this material can be expensive. The installed cost generally ranges from $1.25 to $2.25 per square foot, depending on wall thickness and type of foam. This cost is typically higher than the price of traditional materials.
• When burned, they release toxic fumes
• Some use HCFCs, which are believed to deplete the ozone layer.
• It is made from fossil fuels.
• It contains hazardous chemicals which can become a danger to humans and the environment during transportation and installation.
• Installation can be dangerous and visual blindness can occur without the proper eye protection.
• In some cases it may be difficult to retrofit a home with because of the chemicals used.

Now it is becoming increasingly popular to insulate your home with spray foam insulation. However installing this type of insulation is not that easy, and should be left to professionals.

Foam insulation is made up of a polymer (such as polyurethane or modified urethane) and a highly reactive foaming agent. The two components are kept separate until they reach the nozzle of the spraying machine when they quickly react creating a substance that can expand up to 100 times its original size.

The foam is sprayed either directly onto the surface or through holes (in the case of retro-fitting) and expands to fill even the smallest nooks and crannies making an air-tight seal and thus eliminating the escape of air, energy, and money.

There are two types of spray foam insulators: open-cell (isocyanurate) and closed-cell (polyurethane). Open-cell types allow for the infiltration of vapor, while the closed-cell provides superior insulation and serves as a vapor barrier.

Each type has its advantages in different situations. Review the following advantages and disadvantages to see if this material is right for you.

Advantages of spray insulators:

• They have higher R-values per inch than traditional batted fiberglass. R-value is the measurement of thermal resistance used in the construction industry today. The higher the number a material is, the more effectively it insulates.

• It blocks air flow by making a tight seal around wires, electrical boxes, and in all tight spaces.

• It can serve as a vapor barrier when a closed-cell variety is used.

• It acts as a sound dampener as well.

• It can be used to retrofit a home for thermal efficiency.

• When retrofitting, it is the cleanest (no dust) and most effective option.

• It can actually improve the structural stability of the building.

• It can be used in places where traditional materials cannot such as between rafters and joints.

• When the house expands and contracts the material does the same, always providing that air-tight seal.

• It can be applied in small quantities.

• It does not shrink, loose shape, or biodegrade.

• Some kinds are fireproof.

Disadvantages of Spray Foam Insulators:

• Installation is difficult and requires special equipment. A small area may be attempted by a novice, but most jobs ought to be handled by a certified installer. They have the experience and the ability to the wall cavity without too much over-spray.

• Because a professional installer is needed, this material can be expensive. The installed cost generally ranges from $1.25 to $2.25 per square foot, depending on wall thickness and type of foam. This cost is typically higher than the price of traditional materials.

• When burned, they release toxic fumes

• Some use HCFCs, which are believed to deplete the ozone layer.

• It is made from fossil fuels.

• It contains hazardous chemicals which can become a danger to humans and the environment during transportation and installation.

• Installation can be dangerous and visual blindness can occur without the proper eye protection.

• In some cases it may be difficult to retrofit a home with because of the chemicals used.

Now it is becoming increasingly popular to insulate your home with spray foam insulation. However installing this type of insulation is not that easy, and should be left to professionals.

Spray foam insulation is made of polyurethane foam, which is the same insulation that manufacturers have used in refrigerators and hot water heaters. This liquid is pumped through spray nozzles. First you conduct a test spray and you must remember to use it sparingly because it will expand to over 100 times its size. You should spray between the gaps and on the exterior and allow it to expand so it fills the gaps. When it lands around your attic or side walls, it expands to form insulation. Then take a handsaw blade and cut away any excess foam that protrudes out. Then you are ready to install the drywall.

Foam insulation protects the environment by minimizing the use of harmful chemicals. Traditional insulating materials are usually made from fiberglass or cellulose that insulate the house but can create a lot of waste and may also damage the environment. Many foam industries have decided to create a quality product with the highest renewable resource content to encourage homeowners to purchase this product as it protects the environment. Earlier individuals used traditional insulating materials like fiberglass and cellulose. Now, with the invention of spray foam, the product can seal and fill tiny cracks and crevices that may not be even seen with the naked eye.

Spray Foam insulation has a high R-value when it comes to thickness. Thanks to its high R-value, homeowners can use different construction, that can save framing costs and illuminate door jambs. This foam can also increase the living space by as much as an extra closet all around the house. The foam insulation can help control moisture and condensation and it tends to not shrink or settle. It is a fire and insect resistant too.

Most individuals hire a contractor who is certified in applying spray foam insulation for the whole house. If you are insulating a small wall or a portion of the house, you can probably buy a tank of spray foam from a contractor but if you plan on undergoing a large project you should hire a professional to make sure the job is done correctly.

Since it is not a do-it-yourself project, you may have to endure a cost by hiring a contractor. The contractor will have the machinery available to do the job quickly and efficiently. The process could be messy, that makes it is easier for new construction rather than existing homes. Even though it is easier to do on new construction, thousands of people are getting spray foam insulation on renovations. Using this product in sidewalls may be difficult and delay the process especially if electrical and plumbing contractors do not regularly work with the material. The installation cost of the versatile spray foam can be as much as three times more than traditional materials. However, the increase in R-value and air sealing can lower your utility bills by as much as 30 percent, which means you will pay back the difference in energy savings in less than five years.

If you are renovating your house or constructing a new house, you should consider spray foam insulation. Even though the installation costs can be high, the benefits outweigh the costs.