| We have a large variety of roof
tile for sale in small quantites, suitable for repairs. Inquire
by phone. |
The Hurricanes of 2004
An overview of FEMA's findings and recommendations for roof system performance
by Thomas L. Smith, AIA, RRC
ProfessionalMagazine.net
Between Aug. 13, 2004, and Sept. 25, 2004, Hurricane Charley, Frances, Ivan
and Jeanne made landfall in Florida. (Ivan also hit the eastern coastal areas of Alabama.)
In response, the Federal Emergency Management Agency (FEMA) deployed Mitigation Assessment
Teams (MATs) following Charley and Ivan to determine how well buildings performed following
the hurricanes. The MATs were composed of national experts in hazards (wind and flood),
coastal processes and building codes. They are deployed after disaster events for which
damage summaries and subsequent conclusions and recommendations are likely to have national
implications.
In addition, a Rapid Response Data Collection Team performed field observations after
Hurricane Frances. This team focused on critical and essential facilities, such as
hospitals and schools.
The observation, conclusions and recommendations of the Charley and Ivan MATs are presented
in FEMA publications 488 and 489, respectively, and can be obtained at no cost from FEMA.
The two reports include more than 45 pages and 55 photos retaining to roof systems and
rooftop equipment performance.
METAL PANELS
A variety of structural and architectural panels were observed. The most notable roof
covering success was the 5-V crimp panels. Exposed fasteners are used with these panels.
Although some 5-V crimp panel failures were observed (typically when fastened with
nails rather than screws or when the substrate failed), these panels were found to
be reliable reformers even in areas struck by Charley's high winds. An advantage of
exposed fastener systems is that it is easy to determine fastener spacing after panel
application (and, if deficient, additional fasteners can be readily installed).
http://www.professionalroofing.net/article.aspx?A_ID=710
|
Metal - The Big Green
Metal is a big player in the Green Building Movement
(article by MetalMag November/December 2004)
The use of metal in construction is very diverse. It is used for roofing, exterior walls, siding, interiors, doors, windows,
framing, structural members, fasteners, rainware and flashing. Surprisingly to some, metal actually is an ecologically attractive
building material because of its features.
Sustainable Benefits
Durability
Metal building components are quite durable with exposed metallic-coated surfaces providing excellent corrosion resistance.
Modern technology also has introduced premium-quality paint systems that beautify metal and are warranted against color fade
for as long as 50 years. Metal components are less affected by hot-cold and wet-dry cycles that can degrade other materials.
Metal has been used in constructing buildings for centuries. Metal roofs are credibly proven to last more than 30 years with
minimal maintenance. The longevity of the product is key to its sustainability.
Recycled Content
Most metal roofing components have recycled content ranging from 25 percent to 95 percent. The high level of recycled content
has been a reason for solid-waste districts and departments of natural resources to include metal roofing on their list of
"green" and recycled-content products.
EPA now recognizes steel roofing as an item made with recovered
materials. According to the Steel Recycling Institute (www.recyclesteel.org)
in 2002, the recycled content of steel from basic oxygen furnace
production was 32 percent. The total recycled content of steel
from electric-arc furnace production was 96 percent in that
same year. The Aluminum Association Inc. cites 2003 recycled
content of domestically produced flat-rolled products for the
building and construction market at about 80 percent. Cooper
also is a routinely recycled metal product. Excluding copper
wire, the remaining market, including construction, contain
75 percent recycled scrap. And finally, more than 30 percent
of zinc used in all applications world-wide comes from recycling.
The average recycled zinc content in building products is estimated
to be less than 9 percent.
Recyclability
In addition to the high levels of recycled content, metal has an added benefit of being 100 percent recyclable.
Whereas other old building materials are disposed of by the ton each year in landfills, steel, aluminum, copper and
zinc used in metal construction can be recycled in their entirety at the end of their useful life.
Weight
The high strength-to-weight ratio of metal reduces the stress
on a building structure. For roofing, the lighter weight permits
metal to be used for installation over the old roofing material.
This prevents the need to remove the old roof and fill up valuable
landfill space. Metal gives designers the ability to use less
material but span greater distances. Metal's light weight requires
fewer resources for the structural and foundation materials
when compared to other construction materials used for roofs
and walls.
Safety
Metal panels and the finishes used on them are inert and sage
and do not pose a health risk. Furthermore, metal is noncombustible,
which provides additional fire protection for buildings. Today's
metal component systems are tested carefully on an ongoing basis
for performance, wind resistance, fire resistance, hail resistance
and occupancy safety. They are listed with various building
codes and entities, such as Underwriters Laboratories Inc.,
International Code Council, Dade County and others.
Energy Efficiency
Metal is rapidly gaining acceptance as a very energy efficient material with which t design. Metal roofing has
attractive solar reflectance and infrared emittance properties, which makes it a "cool roof." Studies by Oak Ridge
The federal government also is taking action in green building. The "Greening of the Whitehouse" project, which began
in 1993, resulted in a $300,000 annual savings in energy and water usage, landscaping expenses and solid waste costs.
In Executive Order 13101, signed by former President Clinton on Sept. 14, 1998, the federal government was instructed
to improve its use of recycled and "environmentally preferred" products, which include building products. The document
that contains these preferred products is the EPA Comprehensive Guideline for Procurement of Products Containing
Recovered Materials. As of April 30, EPA recognizes steel roofing as an item made with recovered materials.
Building materials, such as steel roofing, are to be given preference by contractors and designers involved in
construction projects for the federal government.
Today, government buildings comprise 10 percent of the projects registered in the LEED program. Numerous government
agencies have adopted LEED goals for their construction programs. These include the U.S. General Services Administration,
Department of Energy, Department of Defense, Department of State, NASA and EPA.
Score
Metal construction products are highly sustainable and important to green building. The diversity of metal for
use as roofing, wall cladding, framing and many more components lends to a strong LEED TM (Leadership in Energy &
Environmental Design) rating in construction. Metal has high recycled content and can be fully recyclable.
Further, metal building components often are manufactured locally so transportation costs are reduced.
Reflective surfaces, insulating properties of composite products and reducing air infiltration in walls
help improve the energy efficiency of buildings that feature metal construction.
Metal may be an unlikely hero because it can score a BIG upset in the green building game.
Nationally Laboratory, Oak Ridge, Tenn., have found painted metal roofing materials retain 95 percent of their
initial reflectance and emittance for as long as 30 years. As a result, metal roofing products and coatings
comprise over 65 percent of the products on the ENERGY STAR Roof Products Directory. Property owners have
reported energy savings as high as 20 percent after installing a metal roof. In roofing, the lower surface
temperatures that are possible with painted or granular-coated metal panels also help mitigate the urban heat-island
effect. This is a phenomenon where urban areas realize air temperatures 6 to 10 F higher than rural surroundings
because of dark solar-absorbing materials used for paving, roofs and low vegetation. More information about cool
metal roofing can be found at www.coolmetalroofing.org.
Industry and Government Programs
Metal construction products have been recognized for their ecological value and sustainability in a number of rating
programs, labeling programs and other initiatives. Metal components are listed in the ENERGY STAR Roofs Products
Directory, Cool Roof rating Council Directory, resource page of the U.S. General Services Administration's Whole
Building Design Guide, EPA's Federal Procurement Guideline and Sustainable Building Sourcebook of Green Building
Programs, just to name a few.
|
Angell Roofing Opinion:
Metal roofs, and in particular the 5-V crimp panels, are the strongest and most wind
resistant of all roof coverings. Our opinion at Angell Roofing is that a 5-V crimp
roof installed in combination with a peel & stick/Ice & water shield underlayment is
hands-down the absolute best performing roof for the coastal high wind and rain areas.
We feel so strongly about this that Charles Angell, President, has installed this exact
roof system on his personal residence.
Roofing Options:
Metal Roofs Photo Gallery
Siliconized Polyster - Standard Colors
 |
| |
Kynar - Premium Colors
 |
|
"Professional Roofing Magazine" December 2006
|
|
Metal Roofing Alliance
Frequently Asked Questions
By: Tom Black, Executive Director, MRA
Question: Is a metal roof louder during
a rainstorm?
Answer:
A properly installed metal roof with attic insulation is no louder during the rain than any other roof.
Question: Does installing a metal roof
increase the chances of a home being hit by
lightning?
Answer:
No. Lightning always strikes the highest point. Having a metal roof will not affect this. If the roof is the
highest point, you may want to consider installing a lightning rod. The good news is that if lightning
did hit the house, a metal roof would actually help because it is fire resistant.
Question: Does a metal roof have any
insurance benefits for homeowners?
Answer:
Weather-resistant metal roofing can provide long-term protection to homes, and result in decreased insurance
costs. Impact-resistant UL Standard 2218 tested metal roofing (classes 1 through 4) and fire-resistant Class
A, B and C metal roofing can protect a home during extreme weather events. MRA recommends that contractors
remind consumers to check with their insurance company to investigate these discounts. In some areas of the
country, insurers are offering discounts up to 30% for homes protected by a metal roof.
Question: Does investment grade metal
roofing reduce homeowners' energy consumption?
Answer:
As reported by the Cool Metal Roofing Coalition and the Oak Ridge National Laboratory, installation of
reflective metal roofing can save homeowners up to 40% in summer cooling energy costs while highly
emissive metal roofs can reduce urban air temperatures by as much as 12 degreeds F. Combined, these
benefits mean lower energy costs, less dependence on non-renewable energy resources and reduced general air
pollution.
Question: What are the environmental
benefits of metal roofing?
Answer:
Most metal roofing, including standing seam, is composed of recycled material, reducing landfill waste and
promoting decades of environmentally-sound, maintenance-free strength and beauty. In addition, at the
end of its useful life, metal roofing is 100 percent recyclable where other roofing materials are routinely
removed and disposed of by the ton in landfills.
Question: Does a metal roof protect
a home from wildfires?
Answer:
Most forest fires decimate residential communities through burning pine needles and other debris blown
from roof to roof. A metal roof is non-combustible, and does provide protection from wildfires. More
conventional roofs, such as asphalt, are petroleum products and therefore catch fire relatively easily
and the home subsequently burns to the ground.
Question: How does a metal roof perform
in high wind conditions?
Answer:
Many metal roofing systems have a 120-mph wind rating and uplift resistance that is above new building
code requirements. Most metal roofing materials interlock, forming a protective barrier that other
roofing materials do not provide. This interlocking makes the roof stronger and more resistant to high winds.
|
|
 |
 |
 |
 |
5-V Crimp
Galvalume |
5-V Crimp
Galvalume |
5-V Crimp
Green |
Standing Seam
Buckskin |
| |
 |
 |
 |
 |
| Shake Green |
Galvanized
Portico |
Standing Seam
White |
Standing Seam
White |
| |
 |
 |
 |
 |
5-V Crimp Metal
"Forest Green" |
5-V Crimp
Galvalume
with Cupola
Punta Gorda |
Standing Seam
Panel Galvalume |
Standing Seam
Panel Galvalume |
| |
| For
metal roof colors please check out: JMMetals.com
|
|
|
|
| | |
