Foam Insulation Pros & Cons

Applications

There are many useful applications for foam insulation. This type of insulation is usually used in small applications like sealing in the frame of a door. Foam insulation is applied via a gun that combines two components at the tip, creating a mixture that is ideal for insulation. The primary purpose of foam insulation is to insulate a home or structure from outside temperature changes, keep a place cool when it is warm outside and keep a place warm when it is cool outside. Another purpose for insulation is to keep any level of air conditioning taking place in the house to stay in the house.

There are three main types of foam insulation, all of which yield similar results: polyisocyanurate, polyurethane and polystyrene. Polystyrene insulation is known to irritate the eyes and respiratory system. Also, it has been known to cause dizziness, fatigue and malaise.

There are several pros to using foam insulation instead of, or even in tandem with, other more traditional types of insulation. Foam insulation blocks airflow by sealing off leaks through its expansion. This type of insulation can be used to fill cavities in walls without ripping the walls out. It works well in tight spaces. This type of insulation also provides better sound insulation than do others. It is easy to apply small quantities with foam insulation. Some types of foam insulation are fireproof, which lends obvious advantages.

Despite the many benefits of foam insulation, there are several drawbacks a consumer should be aware of. Foam insulation tends to be more expensive than traditional types of insulation. Foam's ability to insulate against temperature changes can diminish slightly over time. Usually, these foams will need to be protected from sunlight and certain solvents. Obvious disadvantages to foam insulation are the negative effects it can have on the environment.

Some people may be allergic to certain foam insulations. Most common allergic symptoms develop after a person comes in physical contact with the insulation.

Except for fireproof foams, many foam insulations release toxic fumes if burned. There are also other environmental effects posed by usage of foam insulation. The blowing agents in foam insulation produce greenhouse gases. Also, many foam insulations these days use fossil fuels, which may concern some people interested in environmental preservation.

There are several different manufacturers that produce foam insulation. Price is dependent on which manufacturer's product is chosen and how much will be used. Obviously, the more product used, the more costly the venture will be. In general, having foam insulation installed in a home will cost between $1.50 and $2.50 per sq. ft. as of 2009, depending on desired thickness.