Energy Savings, Comfort, Air And Moisture Infiltration-Polyurethane Insulation Does It All

Polyurethane foam insulation is a major innovation in home insulation technology. For more than 40 years, spray foam insulation has been providing year-round comfort in homes across America. Federal and state energy-saving education groups refer to spray-in-place foam as one of the most efficient means of insulating your home.

How does polyurethane foam work:
A two-part mixture is applied by trained professionals to the inside surface of exterior walls, to the underside of roof, and beneath floors in basements and crawl spaces. The spray mixture expends rapidly to fill all cracks and voids, completely and permanently adhering to wood, masonry, metal studs and joists.
Spray foam insulation is professionally installed at the same point in the construction cycle as other types of insulation. That is, it should be installed after the rough plumbing, electrical wiring, and heating and air conditioning ducts have been installed, but before the interior walls are completed in new home construction. In some cases polyurethane foam also can be applied in older homes, to the inside of roofs and under floors after construction has been completed.

Polyurethane insulation seals your house: Polyurethane insulation is sprayed on as a liquid which reacts and expends in place. This expansion action also seals all of the cracks and crevasses in your wall’s exterior sheathing. The result is that air can no longer slip in: your house will be less drafty and more comfortable.
Air leakage can also introduce moisture into the wall cavity, resulting in wet insulation and mold and mildew. With the sealing effects of polyurethane insulation, this will not be a concern.

Your house does need to be ventilated: Most house design professionals will advise you to seal the house structure as tight as possible and provide the necessary ventilation through the heating and air conditioning system. Many systems employ an “air exchanger” which is designed to pre-condition (either warm or cool) the incoming outside air with the outgoing exhaust air. In this manner, you can build an extremely energy efficient exterior shell using polyurethane foam while still providing controlled and energy efficient ventilation.
Unlike cellulose and fiberglass materials, closed-cell foam is impervious to water absorption and wicking. Yet the closed-cell structure allows the passage of water vapor (high energy particles) to allow your home envelope to “breathe”. Liquid water has much larger particles and is unable to pass into or through a closed-cell foam barrier.
Most moisture problems in houses are due to moisture entry from air leakage. Because spray polyurethane insulation provides such an excellent air barrier, this source of moisture is virtually eliminated. Other potential sources of moisture can be excluded with proper construction techniques and materials. Unusual building use (such as freezers or swimming pool buildings) may require a vapor retarder.
Polyurethane insulation strengthens your house:
Your walls will be more resistant to winds and you’ll notice less creaking and shaking when doors are slammed or when the kids are romping about.

Will you save money if you insulate with polyurethane insulation? Yes! The installed cost of spray polyurethane is somewhat higher than glass fiber batts or blown-in cellulose. However, the higher initial cost is partially offset because you can leave off the house wrap and your heating and air conditioning equipment can be smaller.
You will save in your heating fuel and electric bills. Studies suggest that homes insulated with spray polyurethane use 20 to 40 % less energy than homes insulated with conventional insulation. Your savings may be greater or less depending on your life style, appliances, house site, number and size of windows, etc.

So, if you want your home warm during the winter month and comfortably cool during the summer month and save money on heating and cooling costs-insulate your home!

Visit http://www.curnuttinc.com/ for more information.

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