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Face-Sealed EIFS and Sealant Joints

ProCoat - February 25, 2020

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EIFS, Exterior Insulation and Finish Systems, are appropriate for nearly any location if the proper drainage measures are designed and executed. In low-drying or high-humidity locations, ones with substantial annual rainfall, moisture must be prevented from entering at joint locations. And water should also be allowed to drain via an designed cavity that prevents penetration into the interior gypsum and other insulating materials.

By limiting temperature transfer from the outside, EIFS construction layers are engineered to act as a blanket to lower energy costs substantially. However, when that blanket becomes wet and will not dry in a short ime, problems begin to arise. The issues can be in the form of mold development and deterioration of the material components.

Drainage and Seals

Two separate measures are employed to combat moisture and reduce the potential for water and high humidity damage to EIFS layers. These measures should be properly executed during the initial construction or remodel.

Drainage Plane- Creating a drainage cavity or gap between the outer EIFS surface and the interior glass-matted gypsum allows moisture that penetrates through the stucco-like surface to drain downward and out through the base of the wall. This drainable EIFS assembly process eliminates most of the moisture retention problems that plagued earlier versions of EIFS.

Sealant Joints- The other major culprit to accumulating moisture in EIFS construction are the joints that surround windows, balconies, and doors. Also, rain may flow through the roof joints into the EIFS lamina if these are not properly sealed. In areas where drying periods are longer or rain is less frequent, the materials my dry out within a reasonable time. But in rainy areas, these potential problem spots can allow moisture to enter without proper sealing.

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To ensure a perfect sealing process in every potential trouble spot, Building Science recommends that the sealant must:

  • Adhere well to the lamina
  • Be ultraviolet light resistant
  • Not be stronger than the base coat bond strength
  • Be affordable

If joint sealants are applied perfectly, the building owner should not experience problems. Regular inspection to determine whether the sealants are holding should identify problems that may be developing.

Sealants can be reapplied when necessary to prevent further damage.

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EIFS installation must be performed perfectly to be fully effective. In high precipitation and excessive humidity, moisture can develop anywhere.

If you have questions regarding the practicality and economy of EIFS in future construction and remodeling, be sure to seek expert advice. The cladding professionals at ProCoat Systems are available to discuss the technical aspects of EIFS construction for your building.


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EIFS finish coat

10 Steps for the Perfect EIFS Application

ProCoat - January 13, 2020

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EIFS, Exterior Insulation and Finish System, is a cladding technique designed to protect and insulate buildings while reducing energy costs. Though a very specific layering process, starting inside the building and extending to the outer wall, the EIFS process insulates while preventing moisture build-up within the system.

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EIFS Wall Systems Are Not a Recent Discovery

ProCoat - January 26, 2019

In 1963, Stotmeister & Company, later known as STO™ CORP, created an acrylic-based wall system that can be applied as an insulating coating on building exteriors. The result was a more attractive exterior with dramatically improved energy efficiency. In those 53 years, Exterior Insulations and Finish Systems (EIFS) have evolved in a broad range of colors, textures, and energy-saving capabilities. EIFS may be applied to virtually any building to protect and improve the outer appearance and extend the structure’s useful life while reducing energy costs. (more…)

EIFS finish coats

EIFS Material – Part of the Perfect Wall

ProCoat - January 3, 2019


Buildings of every type are intended to provide essential shelter for everything within. Whether the structure is designed to protect people, animals, equipment, or products, roofing and walls should be able to resist rain, snow, wind, and other natural forces. And in most cases, the walls of buildings that house people and temperature or moisture-sensitive goods should have ample thermal retention and moisture resistant properties. (more…)

EIFS finish coat

Are EIFS Finish Coats a Cost Effective Way to Improve the Exterior of Your Building?

ProCoat - December 12, 2018

Have you considered how a drab appearance of your building can impact customer perception, resale value or both in Salt Lake City? Have you noticed your heating and cooling costs are rising, and some rooms tend to be drafty? Alternatively, are you experiencing moisture penetrating through your walls? Have you considered and EIFS finish coat?  (more…)

EIFS finish coats

Protect Your Exterior with EIFS Finish Coats

ProCoat - June 5, 2018

EIFS finish coatEIFS, also known as Exterior Insulation and Finish Systems, is an energy saving and durable cladding consisting of scientifically developed layers of materials that coordinate to restrict the transfer of energy and eliminate the accumulation of moisture. In reality, EIFS works as an overcoat for your home or business. (more…)


A Scientific Solution to Energy Efficiency

ProCoat - April 18, 2018

EIFS applications

Although EIFS coating systems have been around for decades, the methods continue to improve. Originally developed in Europe,  EIFS, Exterior Insulation and Finish Systems, has evolved into a perfect insulating, moisture resistant, and durable cladding for any structure.

An important supplier-partner of ProCoat Systems of Denver is STO Corp, the global leader in continuous insulation systems. These companies provide EIFS component materials including air and moisture barriers, backup wall systems, and StoTherm® ci continuous insulation systems to enhance energy efficiency. (more…)

EIFS construction

Understanding the Elements of EIFS Construction

ProCoat - March 2, 2018

EIFS constructionExterior Insulation and Finish Systems (EIFS) is becoming an increasingly popular method of construction to create a beautiful, durable, and highly energy efficient cladding system for any building. EIFS have been around for years although improved techniques and design features have developed to make these even more efficient, long-lasting, and moisture resistant. (more…)

EIFS finish coats

What is EIFS Stucco?

ProCoat - February 7, 2018


The newest versions of EIFS, Exterior Insulation and Finish Systems, are durable, attractive, and highly energy efficient. These characteristics are a result of a scientifically refined system of layered materials that restrict energy loss, eliminate moisture accumulation, and provide a beautiful and lasting exterior appearance. While each layer has an important function, the exterior surface is comprised of a stucco-like material that offers substantial practical and aesthetic value. (more…)

EIFS finish coat

Are You Confused by the Difference Between Stucco and EIFS?

ProCoat - December 18, 2017

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Many people view two entirely different cladding systems, stucco and EIFS, as the same.  It is true that on the surface, these appear to be similar. But what is going on beneath the outer layer is the difference.

Stucco is a durable and attractive exterior coating for buildings and homes. The material may be applied over wood, steel, or masonry subsurfaces to provide an distinct and beautiful appearance. Stucco offers a truly classic look and requires very little maintenance. (more…)

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