ROOFS TO ROADS NEWS
RECOVERY Press Release
recycling" ST. LOUIS POST-DISPATCH, December 24,
& Demolition Recycling Magazine: "Missouri
Takes Lead in
Shingle Recycling" by Dan Krivit, April 5, 2005
Louis Contruction News & Review: "Peerless
Resource Recovery Is Giving a New Definition to 'Rooftop
Parking,'" March-April 2005
Learn How to Cost-effectively Recycle
Roofing Shingles into Asphalt at Upcoming Seminar
Participants at an upcoming recycling
seminar will learn how to bring new meaning to the term
Peerless Resource Recovery, in conjunction
with the St. Louis - Jefferson Solid Waste Management
District and the Missouri Department of Natural Resources,
is hosting a seminar for architects, engineers, builders,
owners and construction companies that use or recommend
asphalt as a paving material. "Roofs to Roads"
will showcase the benefits of turning tear-off roofing
shingles from construction landfills into asphalt hot
mix or aggregate base. The seminar begins at 4:00 PM
on March 29th and concludes at noon on March 30th. It
is being held at the Missouri Botanical Gardens
Monsanto Lecture Hall, 4344 Shaw Boulevard, in St. Louis.
"More than 276 million pounds of
tear-off roofing shingles are dumped into Missouri landfills
every year," said Dale Behnen, co-owner of Peerless
Resource Recovery and the sponsor of the seminar. "Until
recently, these shingles simply took up landfill space.
However, many states, including Missouri, are seeing
the value of recycling these shingles as asphalt base
or aggregate. Our goal with the Roofs to Roads seminar
is to educate the design and construction trades on
how to make it happen and how they can benefit from
Tear-off roofing shingles are made primarily
of asphalt, which makes them an ideal substitute for
virgin materials in both pavement bases and hot mixes.
The recycled shingles also work well for road patch
repair. "The potential for this application is
enormous," said Roger Brown, vice president of
Pace Construction Company, a St. Louis area road and
bridge construction company with a great deal of experience
using recycled shingles in asphalt pavements. Brown
said that recycled shingles do not add to the cost of
traditional asphalt pavement mixes. "If we are
able to generate some momentum in the acceptance of
this practice, I think we could even see some cost savings,"
Behnen said the Roofs to Roads seminar
will feature several expert speakers from other states,
including Ohio, Maine and Minnesota, which have had
success with recycling roofing shingles.
One Ohio recycler, Steven Johnson, who
owns Roof to Road, LLC, a Columbus, Ohio asphalt recycling
business, has seen steady growth in this area and sees
more in the near future. "As soon as local governments
realize the potential this process hasnot only
to save landfill space, but to create more resilient
pavements well be able to generate cost
efficiencies all-around. The roofers will have lower
demolition costs and the roads will actually cost less
and last longer," said Johnson. He added that paving
companies also would save money and be more profitable
as a result. Johnson will be speaking about recycling
and marketing tear-off shingles.
Likewise, New England states are seeing
a growing acceptance of recycled shingles in aggregate
base and hot mix. "Weve found that recycled
shingles actually enhance the durability of the base
material by creating a more flexible structure. Whats
more, there are some compelling financial considerations
that make it an excellent option," said Carl Wight,
Quality Control & Research and Development Manager
of Commercial Paving & Recycling Company, LLC of
Scarborough, Maine. His company has recycled hundreds
of thousands of tons of roofing shingles throughout
New England for more than 8 (eight) years. He will talk
about the dynamics of the shingle recycling process.
Other speakers at the Roofs to Roads seminar
include Joe Schroer, field materials engineer with the
Missouri Department of Transportation; Dan Krivit, owner
of Krivit & Associates, a St. Paul, Minnestoa shingle
recycling consultant; John Adelman, CEO of Commercial
Paving & Recycling Company and a member of the board
of Construction Materials Recycling Association; Roger
Brown, vice president of Pace Construction Company;
and Dale Behnen, co-owner of Peerless Resource Recovery.
The seminar will feature a cocktail and
hors doeuvres reception on Tuesday evening, March
29th. A continental breakfast will be served the following
morning. Participants may take a guided tour of a recently
built road using recycled tear-off shingles at the Antire
Quarry on the afternoon of Wednesday, March 30th, following
the conclusion of the seminar.
The seminar costs $60; however, participants
who register by March 18 will pay only $40. To register,
call Peerless Resource Recovery at 636-225-7000 or e-mail
firstname.lastname@example.org. For more information, visit www.roofstoroads.com.
BY JACK NAUDI
Of the Post-Dispatch
The owner of a Valley Park
landfill leads a campaign to incorporate scrap
roofing shingles into the asphalt used on highways.
Few motorists spend time wondering what ingredients
went into making the asphalt that helps their tires
to grip the road.
Dale Behnen, co-owner of
Peerless Landfill Inc. near Valley Park, is a
notable exception. She has led a crusade to change the
making it better for he environment.
The key ingredients in Behnen's
plan are shingles torn rom roofs.
And in a few months, her
efforts could culminate with a ignificant change in
road construction in Missouri.
Each year, Peerless, a construction
and demolition landfill, receives about 25,000 to 30,000
tons of shingles, all of which are buried.
Most shingles, like asphalt,
are a petroleum-based product. Rather than dump
old shingles into landfills, Behnen reasoned, why not
grind them up and put
them into the asphalt-road mix?
The idea isn't novel. Several
states allow road asphalt to nclude a mix of 5 percent
to 10 percent of the shingles scrapped by manufacturers.
"It's a good product,"
said Timothy Townsend, a professor of environmental
engineering at the University of Florida and an expert
in shingle recycling.
Furthermore, he said, putting
cast-off shingles into asphalt roads "provides
a way to re-use material that might otherwise end up
in a landfill."
Minnesota is among the heaviest
users of recycled scrap asphalt. Statewide, about 12,000
tons of asphalt shingles make their way annually into
state and local roads, said Roger Olson, a research
operations engineer for the Minnesota Department of
Even so, Behnen's plan doesn't
involve scrap shingles, which are never used and, therefore,
relatively clean. She wants to use weathered shingles
torn from roofs.
There's one big drawback:
Tear-off shingles include a high volume of contaminants,
which highway engineers call deleterious materials.
These can include asbestos and nails and wood, all of
which can compromise the integrity of the asphalt mix
"It's garbage in and
garbage out," Townsend said.
That's why Minnesota doesn't
allow tear-off shingles to be used in asphalt.
In theory, every bit of unwanted
stuff can be removed from tear-off shingles. But reaching
perfection would require teams of workers and loads
of expensive equipment, making an asphalt road only
slightly less expensive than a gold-plated highway.
Behnen enlisted the help
of Pace Construction Co. of south St. Louis County,
a road builder that coincidentally had been looking
at tear-off shingles,
Pace and Peerless have been
working on a mix that contains some contaminants
without sacrificing road quality.
"The biggest problem
we get with deleterious material is wood," said
Roger Brown, vice president at Pace.
Unlike nails, wood cannot
be extracted by magnets. And unlike plastic, it doesn't
melt during the asphalt-mixing process.
Despite the challenge, Pace
has come up with a mix that has held up in lab tests.
This month, the mix was used to construct a half-mile
private road for trucks at a quarry near Eureka.
Missouri highway officials
believe that it's not only the first road in the state
with a mix of tear-off shingles but also one of the
first in the nation.
Brown is certain that the
road will last, but he and Behnen need to convince the
Missouri Department of Transportation. The agency's
regulations apply only to state highway projects, but
counties and local governments tend to adopt the same
In short, if MoDOT doesn't
sign off, the shingles probably will be buried.
The state's standards allow
virtually no contaminants, said Joe Schroer, field-materials
engineer for the agency.
But he and others are studying
the Eureka road closely, checking for
abnormal weathering, pavement separation or cracking.
"Within the next several
weeks, we should be able to decide what direction we
want to take this," Schroer said. "From our
standpoint, we would still like to see those foreign
Behnen is hopeful that MoDOT
will loosen its standard on deleterious materials. She
has invested heavily in processing and grinding equipment,
relying in part on grants from the St. Louis-Jefferson
Solid Waste Management District.
"Our mission is to reduce
the amount of waste being generated for disposal,"
said Dave Berger, executive director of the district.
"A significant amount of waste is being generated
Berger credits Behnen with
getting MoDOT's attention on recycled shingles.
"If it wasn't for Dale's
persistence, we wouldn't be here," he said. "Dale
really did the heavy lifting to get this to come together."
Even if Behnen gets MoDOT's
endorsement, she still has an uphill battle. The
economics of using recycled shingles remain uncertain.
Pace probably would avoid
using tear-off shingles if it didn't lead to equal
or lower asphalt prices, Brown said.
"We'd like to be benevolent
and help the environment, but it really makes it
attractive if you can make some money on it," Brown
For her part, Behnen acknowledges
that she doesn't know where things will go with recycled
shingles. "We're all inventing the wheel."
But she allows for the possibility
that a half-mile quarry road represents the first small
move toward much wider acceptance.
"We know how to grind
it. We know how to screen it. We know how to stockpile
it," she said. "Right now, we need the markets."