What is EIFS?
EIFS stands
for Exterior Insulation and Finish Systems. The product is also
called synthetic stucco, and refers to a multi-layered exterior
finish that's been used in European construction since shortly
after World War II, when contractors found it to be a good
repair choice for buildings damaged during the war. The
majority of repairs to European buildings were to structures
constructed of stone, concrete, brick, or other similar,
durable materials.
EIFS in North
America
North American builders began
using EIFS in the 1980's, first in commercial buildings, then
applying it as an exterior finish to residences--mostly wood
frame houses--using the same techniques that had been
successful in Europe.
There are three layers to
EIFS
Inner Layer Foam insulation board
that's secured to the exterior wall surface, often with
adhesive.
Middle Layer A polymer and cement
base coat that's applied to the top of the insulation, then
reinforced with glass fiber mesh.
Exterior Layer A textured finish
coat.
Synthetic Stucco vs. Traditional
Stucco
Synthetic stucco is soft and
sounds hollow when tapped.
Traditional stucco is hard and
brittle, and sounds solid when tapped.
EIFS Today
Newer EIFS systems include a
drainage arrangement to help keep moisture from being trapped
behind the covering. Ask a trusted home builder for details
about contemporary EIFS.
Key Facts
Tyvek stucco wrap:
With engineered drainage channels forms , can result in a
stronger stucco, more resistant for that special design, less
crackings means better stucco integrity, there’s less chance
water will penetrate the facade.
Insulation borads: (EPS)
Track: provides straight edges and termination
lines.
Base coat: creates a barrier against weather
and reinforces the exterior surface.
Reinforcing mesh: is reguered on every system.
(Balance, open, weave glass fabric)
Primer: Acrylic based, promoted adhesion and
reduces the chance of efflorescence.
Finish: a decorative texture finish is applied
over base coat and primer, is acrylic base textured wall
coating with graded marble aggregate.
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