A
Barrier to EIFS? The Insurance Crisis Facing Exterior
Insulation Finish Systems
By Elizabeth J. Anderson
What
are EIFS? Exterior Insulation Finish Systems, commonly
known as EIFS or synthetic stucco, are multi-layered
exterior wall systems used on both commercial buildings
and residential homes. These systems are usually comprised
of five layers: an exterior finish, a reinforcing
mesh to protect the system, an insulator, an adhesive
substance binding the insulator to the building and
a substrate to which the insulator is attached. EIFS
were originally developed in Europe, making their
first appearance in the United States more than thirty
years ago, and becoming very popular in the early
1980s.
Why
Use EIFS? * EIFS are very energy efficient, literally
wrapping the exterior of the building or home in a
thermal blanket. By insulating outside the structure,
EIFS reduce air infiltration, stabilize the interior
environment and reduce energy consumption. By contrast,
traditional "between the studs" installation leaves
gaps where heat and cold pass more freely between
the outdoors and space within. EIFS can reduce air
filtration by as much as 55% over standard brick or
wood construction.
*
EIFS adds to the "R-value" of a home or building.
R-value is a measurement of the resistance to heat
flow; the higher the R-value, the better the material's
insulating value. Most EIFS use insulation board with
an R-value of R-4 to R-5.6 per inch as the innermost
layer in the wall system. When combined with standard
wall cavity insulation, this extra layer can boost
wall insulation from R-11 to R-16 or more. * EIFS
allows increased design flexibility and aesthetic
appeal at an affordable price. EIFS bear a resemblance
to stucco or stone, but are far more versatile than
these and other materials. EIFS come in virtually
limitless colors and a wide variety of textures, but
can also be fashioned into virtually any shape or
design. With EIFS, applicators can create intricate
architectural detailing that would often be cost-prohibitive
with conventional construction.
The
Problem: Litigation over Wet Walls EIFS are characterized
as waterproof systems, because water cannot penetrate
them if the integrity of the system is maintained.
Unfortunately, there are many ways EIFS can be penetrated:
improperly installed flashing around doors, windows,
or roof elements, perforations or cracks in the coating
itself, or homeowner penetration, such as when a deck
is added and the EIFS is cracked. Unlike cavity wall
systems, EIFS does not have a secondary drainage barrier
to permit water that penetrates the face of the system
to drain and escape. Therefore, once water penetrates
an EIFS, it is trapped inside the system and the water
often rots the wood framing or other interior elements.
The irony: one of EIFS' strongest attributes - its
waterproof nature - has become its primary weakness.
Water damage in EIFS homes and buildings has led to
a surge in litigation. In many parts of the country,
especially those that with high heat and humidity,
Individuals experiencing problems with moisture entering
their EIFS clad homes have brought more than a thousand
suits, asserting contract, warranty and negligence
claims. The lawsuits are typically brought against
the general contractor, EIFS manufacturer, EIFS applicator,
and in some instances, other subcontractors, such
as roofers and window installers. Commercial EIFS
building lawsuits are not as common, primarily because
the factors contributing to EIFS failures inherent
in residential homes are not present in commercial
buildings.
First,
commercial buildings often employ steel, rather than
wood, framing and may use substrates that are not
moisture sensitive. Additionally, commercial-grade
windows tend to perform better than residential-grade
windows, commercial subcontractors tend to be more
experienced than their residential counterparts and
commercial construction projects are better supervised.
Finally, the flat roofs that don most commercial buildings
avoid the problem of angled roofs that intersect with
walls in most residences, an easy entrance for unwanted
moisture. The surge in EIFS lawsuits has not gone
unnoticed by insurance providers in the construction
industry.
Contractors
and EIFS installers desiring to use EIFS are finding
it increasingly difficult to obtain insurance policies
that cover EIFS failures. Some insurance companies
have strict EIFS exclusions, while others limit the
percentage of EIFS work that a contractor can do under
the insurance policy. In addition, increased premiums
have become standard for policies that do cover EIFS
failures. The result: many are predicting the demise
of EIFS.
The
Solution: A Better EIFS EIFS are facing an uphill
battle, but it is a battle that can be won. With all
of its benefits, unmatched by any competitive product,
residential homes and commercial buildings alike need
EIFS. However, contractors and subcontractors wishing
to use EIFS need insurance to cover construction defects,
and insurance companies need to minimize their exposure.
How can all of these seemingly irreconcilable needs
be met? By employing several risk management techniques:
* Require a mandatory training class and certification
for all EIFS installers. The course should be conducted
by an accredited organization.
The
Association of the Wall and Ceiling Industries (AWCI)
offers a program, EIFS - Doing it Right, and optional
national certification. For more information on the
program, see http://www.awci.org/eifs.htm. To further
bolster confidence in such a program, a third party
organization with no affiliation with the wall industry
could develop a similar program.
*
EIFS installers should employ a certified loss control
individual to oversee the EIFS installation process.
The individual should have an extensive construction
background and should be very detail oriented with
regard to installation recommendations, industry and
trade standards, and city, county and state codes.
This individual can make sure that the EIFS is installed
in the proper sequence and coordinate with the other
trade contractors to ensure the system's integrity.
*
EIFS installers need to hire and retain an experienced
workforce. The recent surge in new residential construction
has forced builders to engage in fast-track construction,
leading to lower minimal accepted standards in the
industry. If EIFS installers maintain an experienced
workforce, this decline in construction quality experienced
on an industry-wide basis can be curtailed.
*
EIFS manufacturers should get involved with the quality
control process. A representative from the manufacturer
should conduct regular site inspections and approve
the work to ensure that the proper material is specified
for application during the design process. EIFS manufacturers
have an incentive to participate in EIFS construction
- the continued viability of their product.
* Owners of residential and commercial buildings employing
EIFS need to maintain the system properly. Caulk around
window and door openings must be maintained to avoid
water infiltration. EIFS professionals should be consulted
before engaging in any projects that might jeopardize
the integrity of the EIFS system. EIFS installers
must take the initiative to educate those that will
be maintaining the EIFS system by providing written
materials and consultation services relating to EIFS
care.
*
Industry standards need to be developed and implemented
for EIFS. These standards need to be stringently monitored:
EIFS installers need to be checked for their installer's
certification card, site inspections should be conducted
both with scheduled site inspections and unannounced
visits, and additional safeguards should be employed
to ensure compliance with the industry standards.
*
An EIFS system is available that makes use of a special
water management system. These systems collect water
that penetrates the EIFS and then diverts it back
to the exterior of the building before it can cause
rot damage. The system incorporates a special barrier
paper, old-fashioned metal flashings, cement board
in place of foam board and a combination of a cement
basecoat topped with a textured polymer stucco material.
The Bottom Line: EIFS can Survive the Insurance Crisis
One thing is clear:
EIFS
are facing a crisis; studies have shown that EIFS
clad buildings have problems with moisture penetrating
the system, and insurance carriers have taken notice.
However, water penetration is a problem common to
all exterior wall systems - EIFS simply have the added
problem of being unable to expel unwanted moisture.
If the integrity of EIFS, a truly waterproof system,
can be maintained, it will not only avoid the problem
of water intrusion; it will solve it. If general contractors,
EIFS
installers, EIFS manufacturers and EIFS building owners
work together, the fear of continued EIFS litigation
facing construction insurance companies will be allayed,
and EIFS can continue to provide a cost-effective,
aesthetically pleasing, flexible, efficient way to
protect.
Courtesy
of AWCI