About Urethane Foam Sheets

Urethane foam sheets are comprised of polymers linked by organic compounds called urethanes. They come in flexible sheets that are less than an inch thick, and are installed in homes and businesses to act as an insulative barrier. Despite their size, they offer significant insulative properties that exceed many other types of insulation materials. These foam sheets are an alternative to the traditional pink fiberglass, and while they are fairly expensive, they are long lasting and easy to work with.

Function

The main function of urethane foam sheets is to act as a layer of insulation between the outside of a home and the inside. They help prevent cold air from seeping into the house while keeping heat inside during the winter. In the summer, they keep hot air out and air conditioned air in. This not only makes the house more comfortable, but helps to control energy costs as well. As a secondary function, these panels can be used as an acoustical barrier both inside and outside the home, helping to deaden sound and maintain a quiet atmosphere.

Benefits

While many different forms of insulation are available to homeowners, urethane sheets offer some significant benefits over other options. First, they are able to provide a high level of insulation in a very small space. They can be easily retrofit into existing walls without expanding the size of the partition. They also offer more effective insulative properties than traditional fiberglass due to the density of the material.

Size

Urethane foam sheets traditionally come in either two or three pound thicknesses. The thicker sheets are better for areas that require better insulation, though they are more expensive than the thinner panels. Because this material is made of foam, it can easily be cut to any size required for installation. Though it is a great insulator, it is pliable enough to be cut with a simple utility knife.

Types

Foam insulating sheets come in several different varieties. Molded polystyrene is the most affordable option, and is easy to cut and install. Extruded polystyrene is similar, but is more durable and offers stronger insulative properties. It is also known for its moisture-resistance. Urethane foam is the most expensive option, but is also the most durable and long lasting of the three options. A popular alternative to these foam sheets is a sprayable urethan foam, though this product can be expensive and messy.

Considerations

Though urethane foam sheets have many benefits, there are certain drawbacks to consider, too. First, they are one of the most expensive insulating materials in terms of upfront costs. Secondly, the sheets are susceptible to pest invasion due to the fact that they are easy to burrow through. Finally, foam can be hazardous during a fire. It burns quickly and can emit noxious chemicals that are harmful when inhaled.