Skyrocketing energy costs have brought new options onto the scene with regard to roofing materials. One product making news in the industry is foam polyurethane roofing spray, known as SPF (for sprayed polyurethane foam).
This new method of roofing has been declared one of single, most effective ways of saving money in the long run because not only does it provide quality roofing, it also reduces the cost of energy by its superb ability of eliminating air leaks.
Resists Air & Water
Seams and joints do not exist in an SPF roofing system. This prevents water and/or air from entering the home through the roof, regardless of the shape or size of the home. Additionally, the closed-cell structure of SPF provides excellent resistance to water and air penetration. This product works so well at repelling water that the United States Coast Guard has approved it as material qualified to use in flotation devices.
Eliminates the Need for Metal Flashing
Another attribute given to SPF roofing systems is the elimination of sheet metal flashing. Because SPF’s ability to conform to whatever surface it is sprayed onto, this product makes a perfect substitute for metal flashing on all areas of a roof where metal would normally be utilized such as around skylights, chimneys, etc. The foam also does away with roof leaks due to faulty metal flashing.
The strength, versatility, and flexibility of SPF roofing also make it an excellent choice for roofing. Although it is very lightweight (compare its 60 pounds per 100 square feet to conventional roofing materials 600 pounds per 100 square feet), SPF never sags or packs down. Because it is so lightweight, it can often be applied directly over existing roofing materials, doing away with the cost of removing old roofing.
Versatility, Flexibility, and Strength
The versatile nature of SPF makes it ideal for any style of roofing whether it be pitched, domed, or flat. It can also be applied over any kind of shingle material, i.e., wood, metal, concrete, asphalt, composition, clay tiles, or slate.
Because of its pliable characteristics, SPF is very flexible. Expansion and contraction of the structure of a home during extreme heat and cold does not affect the ability of SPF to protect against the elements.
SPF contains a coating of white, elastomeric material that lowers roof temperatures considerably. Conventional roofing acquires temperatures of up to 200 degrees on 90-degree days; SPF, on the other hand, only reaches temperatures of 120 degrees.
The reflective quality of SPF’s elastomeric coating plays another important role in lowering energy costs. This coating is the only thing that ever needs to be replaced with SPF roofs, eliminating the need for tearing off and hauling old roofing material a landfill, which makes SPF an environmentally friendly product.
Where to Find It
Homeowners can locate companies that provide SPF roofing in the phone book or do an Internet search. Many specialize in commercial properties only, so it may take a while to find those that work for the residential sector. Take the time to look. It will save you money, keep you warmer in the winter and cooler in the summer, plus it is good for the environment as well.