WHAT YOU DON`T SEE

WHAT YOU
DON’T SEE...
...IS WHAT WE GET
ILD® is the world leader in Electric Field
Vector Mapping technology. With over 20
years of industry experience, we ensure
that we never miss a breach.*
Optimal conditions required
*
ILD®
tested
here
ILD®
tested
here
ILD®
tested
here
ILD®
tested
here
ILD®
tested
here
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International Leak Detection
Shockingly Accurate!
ILD® IS THE WORLD LEADER IN
INTEGRITY TESTING TECHNOLOGY
North America
EFVM® is a low voltage test method that creates
an electrical potential difference between a nonconductive membrane surface and conductive
structural deck or substrate, which is earthed
or grounded.
Europe
India
New Zealand
South America
Australia
ILD® provides integrity testing for waterproofing membranes.
We are a multinational company with offices & affiliated partners
located in North and South America, Europe, India, New Zealand
and Australia.
Developed by ILD® Germany in the early 1990’s,
Electric Field Vector Mapping (EFVM®) quickly
became a valuable tool for leak investigations on
existing systems. Introduced to North America in
2001, the EFVM® testing procedure has become
the standard for waterproofing verification.
To date, ILD® has tested over 200 million square
feet of membrane worldwide, such as hot or cold
liquid applied membranes, coatings, and various
sheet membranes. Utilizing ILD®’s proprietary
training manual, our technicians are trained and
certified in performing the EFVM® test.
WHY INTEGRITY TESTING
IS SO IMPORTANT
Small punctures, membrane splits or mechanical
damage to waterproofing membrane results in wet
insulation, mold, and costly interior damage. Leaks
may go unnoticed and the water exit location may
not correspond with the point of entry.
In the past, lengthy and costly leak investigations
were necessary to locate a membrane breach,
especially in protected roof membrane assemblies,
garden roofs or parking and plaza decks.
By applying water on the surface of the membrane
and utilizing the water as a conductive medium,
an electric field is created and a breach in the
membrane creates a “vector” (ground fault
connection) which is measured by an ILD® technician.
The EFVM® technician reads the electrical flow
traveling across the membrane, mapping the
“vectors” with pinpoint accuracy.
What better way to get peace of mind when it
comes to quality control testing or troubleshooting
problems in waterproofing membranes?
EFVM® is unique in its ability to test the integrity of waterproofing membranes with overburden or
ballast. This non-destructive method is important for green roofing systems because the EFVM® test
is able to read through the overburden and ballast, while still providing perfectly accurate results.
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International Leak Detection
Shockingly Accurate!
Trump Tower, IL
HOW DOES EFVM® FIND LEAKS?
Empire State Building, NY
A. Small electrical pulses are
directed onto the membrane.
The electricity searches for
a ground connection.
B. If the membrane is watertight,
the electricity is isolated and does
not find a ground connection.
C. If the membrane is not
watertight, the electricity makes
a ground connection and is
pulled toward positive poles.
The EFVM equipment delivers a low voltage pulsating electrical
charge between the non-conductive waterproofing membrane and
the conductive structural deck.
®
A watertight membrane will isolate the potential
difference, while breaches in the membrane will
cause an electrical connection to occur. Our trained
and certified inspectors read the directional flow of
the current with a potentiometer to locate the point
of entry with pinpoint accuracy.
Andrew’s Air Force Base, MD
70,000 (sq ft)
Golden Eye Data Centre, ON
295,400 (sq ft)
Quais d’Orsay, France
65,000 (sq ft)
Aotoa Square,
New Zealand
120,000 (sq ft)
LBJ Library, TX
100,000 (sq ft)
Robson Square, BC
100,000 (sq ft)
Library of Congress, VA
140,000 (sq ft)
Sakhalin Energy, Russia
15,000 (sq ft)
Lorton Water Tank, VA
85,000 (sq ft)
Siemens Headquarters
Munich, Germany
40,000 (sq ft)
Canadian War Museum, ON
170,000 (sq ft)
Cuisinart Resort, Anguilla
12,000 (sq ft)
The EFVM technicians then complete the EFVM
test by conducting a visual inspection of all wall
junctions, perimeter details, and membrane
penetrations. All breaches are numbered to allow
for repairs by the waterproofers onsite and are
retested to confirm watertightness. A report follows
with picture documentation of every breach and
a detailed drawing noting the wire placement and
breach locations.
®
ILD® SIGNATURE PROJECTS:
®
European Court of Justice,
Luxembourg
22,000 (sq ft)
Exhibition Grounds
Hannover, Germany
1.7 million (sq ft)
FedEx, Chicago
O’Hare Airport, IL
200,000 (sq ft)
Muhammad Ali Center, KY
30,000 (sq ft)
Mumbai Airport, India
1 million (sq ft)
Munich Airport, Germany
650,000 (sq ft)
9/11 Memorial Plaza
Freedom Towers, NY
220,000 (sq ft)
Trump Tower, IL
42,000 (sq ft)
UN Building, NY
35,000 (sq ft)
Vancouver Convention
Centre, BC
280,000 (sq ft)
Victoria Desalination
Plant, Australia
520,000 (sq ft)
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International Leak Detection
Shockingly Accurate!
Case Study 1:
Case Study 2:
EFVM TESTING VS. FLOOD TESTING
EFVM® TESTING ON A VERTICAL SURFACE
A Hospital Project in Cincinnati, Ohio utilized EFVM® testing for final
watertightness verification of a hot rubber membrane approximately
25,000 sq. ft. in size.
One notable project which contained multiple areas of
vertical waterproofing is an indoor botanical garden located
in Alberta, Canada.
Due to the sensitive occupied hospital space below
and the elaborate paver system above, ensuring that
the waterproofing was 100% watertight was of the
highest priority. The consultant on the project specified
a flood test and an EFVM® test to be completed prior
to the overburden installation. Once the waterproofing
was completed, a 48-hour flood test was performed
and and the area deemed watertight. ILD® was
called in immediately after the flood test in March
2011 to complete the EFVM® testing. After the
EFVM® test was completed, over 50 breaches were
located within the membrane, which were found to
be mainly due to mechanical damage.
Opened in the late 1970’s, the original gardens
contained more than 20,000 plants, waterfalls,
bridges, ponds and sculptures by local artists,
showcased as a permanent art exhibition. In 2008,
a renovation of the 100,000 sq. ft. gardens began.
One major component of the renovation was the
installation of a new cold applied waterproofing
membrane for the horizontal and vertical
applications, which allowed for a seamless
installation throughout the project.
®
Unlike a flood test that only shows the ability for a
membrane to hold water, the EFVM® test is a pinpoint
accurate test that confirms watertightness, or in this
case a test that located potential active leaks. EFVM®
testing gives an exact location, making repairs simple
and quick without any additional inspections required
from the contractor. As per ILD®’s standard, a report
was issued to the roofing contractor listing all breach
locations and a plan drawing as well for reference.
Once all repairs had been made and retested, all
of the overburden was put in place and the plaza
deck was completed.
The ILD® Vector-9 conductor wire remained in
place to allow for future testing, should any
damage occur prior to the expiration of the
waterproofing warranty. Testing through the
pavers and miscellaneous vegetation will be
possible in the future with the same pinpoint
accuracy as during the initial test.
To verify the installation of both horizontal and
vertical applications, ILD® was retained to conduct
an EFVM® test to ensure a watertight installation.
Beginning in late June 2011, ILD® began testing
the newly-installed waterproofing membrane. The
membrane appeared to be intact and watertight,
but EFVM® testing found areas of damage that
were not visible to the naked eye. Until the advent
of EFVM® technology in the mid 1990’s, there was
never a successful testing method for the verification
of vertical waterproofing installations. With millions
of square footage of vertical waterproofing being
installed every year, a method of vertical testing was
long overdue.
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International Leak Detection
Shockingly Accurate!
Case Study 3:
Case Study 4:
EFVM TESTING THROUGH OVERBURDEN
EFVM® TESTING OF UNEVEN SURFACES
A Water Treatment Plant located in Lorton, Virgina was in the process
of completing the installation of an 85,000 sq. ft. lid covering a clean
water storage tank.
A Kansas City State House was in the process of installing the concrete
layer of stairs that had a hot liquid waterproofing membrane.
®
It was during this undertaking a discovery was made
that ground water was leaking into the tank. Over
2½ feet of soil was already placed on top of the
tank and in order to locate and repair the breaches,
it would have cost the contractor over $1 million,
with no guarantee that that all breaches would have
been found. ILD® was contacted in hopes that the
EFVM® test would be able to locate the breaches
in a more cost-effective and timely manner.
Since the vector wire was not installed prior to the
dumping of soil, the ILD® technician had to weave
a temporary wire through the soil around the lid
area. Due to the soil being a conductor, the EFVM®
test readings were strong and the ILD® technician
was able to locate multiple breaches through the soil.
Once a breach was located, the ILD® technician placed
numbered landscape flags to allow for excavation
of the soil and subsequent sheet membrane repair.
The contractor made the repairs and the areas were
retested to confirm watertightness. Since ILD®’s test,
the fresh water tank has remained free from ground
water contamination.
The contractor suggested an EFVM® test by ILD® due
to the fact that the 8,000 sq. ft. area was installed a
year prior. Although there was no damage visible to
the naked eye, the contractor wanted to ensure the
area was 100% watertight before the stairs were
completed. Flood testing as a quality control method
was not an option due to the inability to build dams
around the stairs.
After the technician completed the EFVM®
test, it was discovered that due to the numerous
breaches, repairs would not be economically viable
and the area was reinstalled. The EFVM® test was
utilized again to verify the new membrane’s integrity
and the Vector-9 wire was left in place to allow for
future retesting after the concrete is installed.
ADVANTAGES OF EFVM® TESTING:
LIMITATIONS OF EFVM® TESTING:
• Pinpoint accurate quality control testing method
• Non-destructive integrity and
troubleshooting testing
• Ability to test sloped decks & vertical walls
• Defects can be repaired and retested the
same day
• Limited use of water required to conduct test
• Inclement weather will not hinder the test –
prefer wet conditions for electricity to flow
• Overburden installed immediately after
the EFVM® test
• Eliminates unnecessary removal of overburden
to locate a breach when doing a visual inspection
• Membrane can be tested prior to the expiration
of the warranty or after traffic has occurred on
the membrane
• Not capable of testing most black EPDM
membranes (ability to test white & grey EPDM)
• Steel-reinforced concrete topping slabs can affect
the EFVM readings due to the conductivity of the
metal within the topping slab (fiber-reinforced
concrete is suggested for retesting capabilities)
• Metal projections protruding through the
membrane must be isolated with membrane
to allow for retesting
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Shockingly Accurate!
International Leak Detection
CONDUCTIVE MEDIUMS
CONDUCTIVE MEDIUM PROJECTS
VECTOR MAPPING GRID™:
• Javits Center, New York, NY
• Victoria Desalination Plant, Victoria, Australia
Developed by the ILD® team through years of research and field
installation, the Vector Mapping Conductive mediums were created to
test non-conductive substrates. Three different conductive mediums
allow for accurate EFVM® testing results:
VECTOR MAPPING GRID™ (VMG™)
A welded stainless steel mesh which can be
utilized on the fully-adhered systems. This mesh
is a non-corrosive material that prevents aging
deterioration within the roofing system.
VECTOR MAPPING MESH™ (VMM™)
A fine aluminum screen that is utilized in loosely-laid
membrane systems.
VECTOR MAPPING FELT™ (VMF™)
A non-abrasive conductive fabric that can
be utilized under a loose laid or mechanicallyfastened roof assembly and embedded into
hot liquid membrane systems.
The conductive mediums are placed under the
waterproofing material and connect to a contact
plate, via a prefabricated cable to the contact box.
The Vector-9 conductor wire on top of the membrane
delivers direct current tension to the surface. Even in
the case of minimal contact with moisture, the system
closes the electrical circuit. Moisture penetration can be
located quickly and then be cost-effectively repaired.
VECTOR MAPPING MESH™:
•
•
•
•
Golden Eye Data Centre, Ontario, Canada
Andrew’s Air Force Base, MD
FedEx, Chicago O’Hare Airport, Chicago, IL
Yankee Stadium, New York, NY
ADVANTAGES OF VECTOR
MAPPING CONDUCTIVE MEDIUMS:
• Early detection of breaches in fully adhered
single ply built up roofs after installation
• Allows for testing of wood decks
• Minimizes the ground fault connection from
the lightning protection system
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International Leak Detection
Shockingly Accurate!
ILD® TIMELINE: A DECADE OF SUCCESS
2001
2002
Performed numerous compatibility
tests on multiple membranes and
coatings to confirm membrane is
suitable for the EFVM® test.
Demonstrated the superior EFVM®
results on a plaza deck that had
previously passed a flood test.
Introduced the EFVM® test to the
North American waterproofing and
green roofing market.
A leading hot liquid waterproofing
membrane manufacturer accepted the
EFVM® test as an acceptable alternative
to the standard flood test requirement.
A leading single ply manufacturer
accepted the EFVM® test method
and results to provide an extended
membrane warranty.
Reached 6 million square feet of
membrane tested in North America.
Introduced a conductive medium
on conventional insulated roof
system to enhance the EFVM® test
on a large-scale green roof project
for Wal-Mart in Illinois, to eliminate
the flood test requirement.
ILD ’s European associates applied
for world patent on a conductive
medium system to enhance the
EFVM® test.
®
2006
Developed and participated
in a test market program
with a large roofing
manufacturing company
across selected North
American cities in order
to demonstrate the benefits
of the EFVM® test.
Introduced the permanent installation
of the Vector-9 conductor wire on
roofing and waterproofing projects
to allow for future testing and
monitoring of the membrane.
Introduced a conductive medium
on non-conductive wood deck
structures to allow for testing of
non-conductive structural decks.
EFVM® utilized on Canada’s
largest green roofing system,
The Vancouver Convention
Centre (280,000 square feet)
as a quality control test.
ILD Brazil opened to the
local market.
®
Tested in excess of 10 million
square feet of membrane by
the end of the year.
2007
2008
2003
2004
2005
Completed testing 1 million square
feet of membrane installations in
North America alone.
Completed testing 2.5 million square
feet of membrane since introduction
to North America in 2001.
Reached 4 million square feet of
membrane tested in North America.
Leading roofing membrane
manufacturers retained ILD®’s EFVM®
technique as a troubleshooting tool
on existing roof systems.
EFVM utilized as quality control
test on one of Canada’s largest
green roofing projects: the Ottawa
War Museum (170,000 square feet).
ILD® New Zealand and ILD®
Australia opened to the local
waterproofing and green
roofing market.
ILD® India opened.
9/11 Memorial Plaza started
(220,000 square feet).
Victoria Desalination Plant,
largest green roof in Australia
(500,000 square feet).
®
Mumbai Airport
(1 million square feet).
Tested in excess of 18
million square feet of
membrane by the end
of the year.
Tested in excess of 26 million
square feet of membrane.
2009
2010
Tested on various buildings for largest
LPG plant for Sakhalin Energy, Russia.
Javits Center
(650,000 square feet).
North America: In excess of
35 million square feet of membrane
tested by the end of the year.
Worldwide: In excess of 150 million
square feet of membrane tested by
the end of the year.
2011
15
SHOCKINGLY ACCURATE!
ILD® USA
1S-2064 River Road South
Des Plaines, IL 60018
T: 847.299.5325
F: 847.299.8066
ILD® Canada
505 Hood Road, Suite 21
Markham, ON L3R 5V6
T: 905.479.EFVM (3386)
F: 905.479.4185
Toll Free: 1.866.282.5325
www.leak-detection.com