When exploring your roofing options, you may come across one known as polyurethane spray foam. Your first thought will likely be along the lines of "how can a roof made from foam possibly offer protection?" or "won't it just absorb water?" The truth is, polyurethane spray foam roofing is made from a different kind of foam than you typically see in pillows and pool noodles. In fact, this type of foam makes an excellent roofing material. Here's a little more basic information about spray foam roofing that should help you determine if it's a good choice for your home.
How is polyurethane spray foam roofing applied?
Other roofing materials are manufactured prior to application and then nailed or cemented onto the roof. Spray foam is different. It comes as two different .liquid chemical preparations, each of which is housed in its own canister. The chemicals are released in a way that mixes them together as they are sprayed into the roofing underlayment. When these two components come into contact with one another, they react to form a dense foam. This foam is hard and crunchy -- not soft and squishy like your pillow -- and it develops a hard outer shell that makes it resistant to moisture.
What kind of roof can be made from polyurethane spray foam?
This type of roofing is most commonly used for commercial structures, but in recent years, it has become more common on residential homes. This is due, at least in part, to an increased pressure to meet green building standards. Spray foam is a very energy efficient roofing choice, so it can help homeowners meet strict green building standards and reduce their fuel consumption.
How does spray foam make a home more energy efficient?
Spray foam roofing virtually forms an air tight barrier. Little nail holes and holes from cords and pipes that would otherwise let cold air trickle in during the winter are completely sealed when spray foam roofing is applied -- it settles in to all of these nooks and crannies. Also, spray foam roofing is more insulating than other common roofing materials, so you lose less heat directly through the roof, too.
What are the other benefits of spray foam?
In addition to being an eco-friendly choice, spray foam is lightweight. This makes it an option even for older homes with delicate foundations and walls that cannot support heavier roofing choices. It is also easy to apply to oddly shaped roofs -- it will adhere to sloped roofs and flat ones with little extra effort on the part of the applicator.
If you're looking for energy efficient roofing, easy to apply, lightweight option, ask your roofing contractor to tell you more about spray foam. A roof made from foam may sound crazy at first, but once you live in a home with this style roof, you'll never want to go back to shingles or shakes.