Stucco
buildings have been around for centuries. Many scientists believe that even the
pyramids of Egypt were coated in a white stucco substance made from volcanic
ash in the beginning. Though some material has endured over 1000 years,
attractive and durable stucco gained substantial prominence in Europe and North
America with the development of Portland cement as a binding ingredient in
1843. After that time, stucco coatings gained significant popularity and became
a cladding of choice during the first part of the twentieth century.
In addition
to stucco’s timeless, attractive appearance, the cladding offers excellent
durability with very limited upkeep. Builders of correctly applied stucco
surfaces employ both drainage and storage strategies to eliminate the
accumulation of moisture. Minimizing moisture absorption while providing
adequate storage beneath to drain or dry is the key to a long-lasting cladding.
How Does Stucco Keep the Building
from Experiencing Moisture Problems?
In some
climates, where moisture levels are minimal and low humidity is the norm,
builders do not worry much about moisture accumulation. However, in many parts
of the country, precipitation levels can be high, particularly during certain
seasons, and special precautions are necessary to prevent moisture damage
within any construction.
For masonry
walls, a Portland cement-based stucco incorporates vapor permeable paints to
resist penetration of rainwater and allow the moisture to dry externally. When
water does penetrate the surface, the moisture that enters will reach the
interior masonry surfaces and be stored there until it eventually dries.
With wood-framed
or steel stud walls sheathed in gypsum or plywood boards, the stucco exterior surface can be separated from the sheathing
with a gap or cavity. To accomplish this, building paper and metal lath is
placed over the gypsum or plywood subsurface before the stucco is applied. In a
short time, the building papers absorb moisture, crinkle, and shrink, thereby
creating a perfect drainage gap between the stucco exterior and the interior
surface. As a result, moisture that does penetrate the stucco surface reaches
the space and eventually drains out of the wall through weep screeds or
flashing system. Adequately installed weep screeds also prevent moisture from
wicking up into the outside walls while providing continuous drainage.
Contact ProCoat Systems in Denver
ProCoat Systems specialists are experts in the
installation, design, and management of all types of claddings. To understand
more about the elimination of moisture problems in stucco and other claddings,
contact ProCoat for more information at 303-322-9009.
Visit ProCoat System’s website to view the many attractive,
functional, and durable options for any home or building.
This post was
originally published at http://www.procoatsystems.com/traditional-stucco-claddings-water-management/
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