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  •  Most membrane roofing systems contain seams throughout the roof.  These seams over time will separate and cause leaks.  Sprayed in place Polyurethane Foam roof systems are totally seamless which provides one of the lowest leak ratios in the roofing industry. If a leak ever does occur, the seamless nature of foam makes it easier to determine and fix any problems in the system.

  • The typical Spray polyurethane system weighs between .5 and 1.0 lbs. per square foot.  Other conventional roofing systems weigh 6 to  10 lbs. per square foot.  This is especially helpful in areas like Colorado and Wyoming which can have problems with snowfall over existing roofs.  It also makes it ideal in older buildings where weight on old structural supports could cause problems.  There is also the advantage of the additional structural strength of the foam itself.

  • Ponds of  water on many other types of roofing systems can cause serious problems along seamed areas.  Because of it’s seamless properties, this is not as big a problem with sprayed foam roofs.  If low areas are identified before application, foam can also be used as a quick easy way to build up low areas to greatly decrease the amount of water that will remain

 •Studies by the National Roofing Foundation were performed on 188 foam roof systems across the country.  The  ages ranged from new to the oldest being 31 years old.  The study was started in late 2001 and completed in September of 2003.  The study results concluded that sprayed foam roof systems have the unique ability to solidly adhere to most, if not all exterior building products. Basically, the industry has learned Spray polyurethane foam—when correctly applied to prepared surfaces and then coated—does not require metal counter flashings. Spray polyurethane foam flashings were found to work well in the various regional climates of the United States. This includes roof-to-wall conditions, roof-to-roof transitions, penetrations and equipment supports. •Specifically, it was noted Spray polyurethane could adhere to the following materials:

  •  Masonry units, Metal wall panels
  •  Metal flashings and pipes
  •  Concrete tilt-up panels
  •  Wood sheathing and board products
  •  Asphaltic flashing systems
  •  Single-ply flashing systems

 •This house in Boulder, Colorado was sprayed by the president of Technical Foam Corp.,Billy M. Rice Sr. in 1971.  The picture was taken in May of 2005.  This house was also featured in the Woody Allen movie “Sleeper”.  The basic shape of the house was made with metal rebar as used in Cement structures and walkways.  This was covered with a flexible fabric and was then sprayed both outside and inside with Polyurethane foam.  Boulder, Colorado has winds that approach 120 mph. on an annual basis and has had winds over 140 mph. since this house was built.  It has required minimal maintenance in it’s over 30 yers. Of existence. If you have a roof with a configuration difficult to roof with other systems, this may be your answer. 

  •  courtesy of Buildings.com
  •  Tom Camp has been a roofing contractor doing business in Florida for over 20 years. He’s seen the damage a hurricane can do to a roof. After Hurricane Erin struck in 1995, his company, Tech Systems Inc., received a call from the Paradise Beach Club condominiums in Satellite Beach. The 75-mph winds of the Category 1 hurricane had nearly ripped the 20-year-old BUR off the 48-unit oceanfront complex.
  •  Forced to choose a replacement, the club managers also sought to solve their history of leak problems and poor energy efficiency. The answer was Spray polyurethane foam, with its high wind uplift capabilities, seamless surface, high insulation R-value, and quick installation. •“With pressing concerns for the comfort and safety of the tenants, speed of installation was almost as important as water tightness and energy efficiency,” says Camp. “We were able to provide them with a leak-resistant roof in just a couple of days.” •Camp reports that over the years, the Sprayed foam roof at Paradise Beach has survived at least three subsequent hurricanes with no damage and no leaks.
  •  The insurance industry identifies roofing as the primary contributor to disaster-related insured losses. The roof and exterior glass are the most vulnerable parts of the building envelope in any wind event and because a damaged roof can expose the building interior - and its inhabitants - to the storm’s wrath, the total cost of a roof blow-off can rise as quickly as the storm’s own momentum.
  •  The reason for roof failure can often be found in the very design of membrane roof systems. Wind often grabs the edge flashing or coping and peels back portions of the membrane.
  •  In comparison, Spray polyurethane foam has gained recognition with industry experts for its ability to withstand high wind uplift and blow-off because its smooth, continuous surface grips the deck and walls. It offers superior adhesion with no need for fasteners, and there are no seams or edges for the wind to grab onto. Lightweight yet rigid, it provides extra strength to help the roof stand up to the forces of nature.
  • Field studies conducted 10 years ago after Hurricane Andrew devastated the southern Florida peninsula show Sprayed foam roofs will not peel or lift unless the substrate the foam has been applied to fails. Spray polyurethane foam also offers increased resistance to flying debris or “missiles” during high wind events. Gouged foam can remain without repairs for months without leaking - a real attribute for building owners when the number of damaged roofs surpasses the number of roofing contractors available to do repairs after a major hurricane passes through an area. •Independent testing organizations, including Underwriters Laboratories (UL) and FM Global, test various roofing systems for wind uplift performance and then publish the results in their directories. Designers can then look for systems that meet the UL designations class 30, class 60, and class 90 or FM1-60, FM1-90, or higher where needed.

 Mason Knowles, technical director of the Spray Polyurethane Foam Alliance, reports that during laboratory testing of Spray polyurethane foam systems, sprayed foam’s wind uplift resistance exceeded the capacity of UL’s equipment. UL also observed that Spray polyurethane foam roofs applied over BUR and metal increased the wind uplift resistance of those roof coverings. He says FM Global’s testing showed similar results over concrete, metal, and wood.

 •Foam can be blended to work with other roofing systems.  We have used foam in conjunction with shingles, built up, metal and membrane roofs.  This can also help if there is a problem with part of a conventional roof, and budget constraints will not allow for a full Spray polyurethane  application.  Again because of it’s self flashing and adhesion  properties it will bond to any surface presently in construction use.

Here, Spray polyurethane was used to fix a problem area of a ballisted rubber roof and had to terminate at a shingle roof

  •  Mason Knowles, Assistant Director of The Spray Polyurethane Foam Division / Society of The Plastics Industry delivered a paper on the use of roofing and insulation at the University of Florida's Conference on Green Building Materials. Sprayed Polyurethane foam which has been used as a roofing and insulation material for over 30 years, has exhibited many characteristics that identify it as a "green" or "sustainable" building material.
  •  Mr. Knowles' program highlighted the following Spray Foam characteristics
  •  The application of Spray polyurethane foam will provide better climate control within a building envelope. Better climate control reduces the consumption of fossil fuels, thereby reducing greenhouse gases released into the air.
  •  Spray foam systems provide a continuous air barrier, preventing moisture infiltration through air leakage, minimizing dew point problems and condensation within the building envelope, avoiding thermal bridging, resisting heat movement in all directions and providing reliable performance under varying conditions.
  •  By controlling moisture infiltration, spray foam systems also provide greater durability to buildings. The number one cause of building deterioration is moisture within the building envelope.
  •  Spray polyurethane foam's climate control ability enables a downsizing of the heating and cooling equipment of a building, further reducing energy usage.
  •  There is no known end of service life figures for Spray foam roofing systems. Generally, Sprayed foam shows little sign of deterioration or change in physical properties even after 30 years. Sprayed polyurethane foam used as commercial or residential insulation typically requires no long term maintenance.
  •  •Spray polyurethane foam can add structural integrity to a building's envelope. The National Association of Home Builders Research Center concluded after testing Sprayed foam in stud wall construction, that a structure braced with Spray foam filled walls will have less damage and permanent deformation of wall elements during a hurricane.
  •  Sprayed foam roofing systems can be applied directly over BUR, modified bitumen, concrete, wood, asphalt shingles, clay tile and metal. Since it adds very little weight, Spray foam is used as a recover system over existing roofs without the need for tear-off. This reduces the amount of construction debris in landfills.
  •  Sprayed polyurethane foam roofs are renewable. With simple re coats the life of a foam roof can be renewed indefinitely.