Exterior Insulation Finishing Systems (EIFS), sometimes referred to as synthetic stucco, is a type of cladding that provides wall exteriors with an insulated finished surface. They are applied in multiple layers over exterior sheathing, to create an energy-efficient, fire-resistance, low-maintenance, beautiful, and versatile exterior cladding.
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Over the years, significant improvements have solidified it as an excellent choice for a durable, energy-efficiency cladding system:
In the International Building Code (IBC) recognized EIFS as an acceptable cladding product, requiring the application of a water-resistive barrier.
Between and , the Oak Ridge National Laboratory (ORNL) conducted a study comparing the energy efficiency, moisture intrusion, and temperature control between EIFS, brick, stucco, and cementitious fiberboard siding. It concluded that drainage EIFS is a far superior moisture and temperature control performance than brick, stucco, and cementitious fiberboard siding.
EIFS, commonly referred to as synthetic stucco, and traditional stucco both provide fire resistance and a good sound barrier. However, while similar in looks, several characteristics change how the two stucco systems function. EIFS weighs 80 percent less than traditional stucco. In addition, EIFS offers more energy efficiency with an R-value between 4 and 5.6, compared to stucco, with an R-value of 0.2.
The composition of traditional stucco includes a mixture of Portland cement, limestone powder, sand, and water. Builders install a base mesh to apply stucco to the building, then spread the stucco over it with a trowel, using a three-coat system. The stucco dries to a rock-hard finish for an affordable, long-lasting, attractive siding.
EIFS is applied in multiple layers over exterior sheathing, providing more insulation and moisture protection than traditional stucco. The typical components (layers) of EIFS include:
StoTherm® ci cladding systems combine continuous insulation (ci), air/moisture barrier, drainage, and many textured finishes to create a sustainable, high-performance wall cladding. The unique and durable system sustains maximum curb appeal and saves money through reduced energy bills. Sto offers several StoTherm ci Systems, including four StoTherm ci Hurricane Impact Systems.
Lightweight StoTherm combines StoTherm® and the StoGuard® waterproof air barrier system, improving energy efficiency and protecting against moisture intrusion.
High-performing and durable StoTherm® ci XPS incorporates high R-value extruded polystyrene insulation into the wall assembly and StoGuard® fluid-applied air and moisture barrier, producing water and airtight walls ensuring thermal efficiency and durability.
StoTherm ci MVES (masonry veneer engineered system) a StoTherm ci system with masonry veneer, ceramic tile, natural stone, or manufactured stone used as the facade finish. Meets applicable building code requirements.
The StoTherm® ci Mineral System incorporates non-combustible, mineral wool exterior insulation and continuous moisture and air barrier with Stos high-performance finishes to create an advanced high-performance cladding assembly.
Energy-efficient, high-performing, and hurricane-resistant StoTherm® ci HI-LM CMU 180 offer a CI wall cladding that combines StoGuard® waterproof air barrier and StoTherm® insulated cladding and drainage capabilities over concrete masonry unit substrates. In addition, StoTherm® ci HI-CM 180s engineering satisfies the testing requirements for large and small missile impacts.
High-performing StoTherm® ci -SM exterior wall cladding assemblies combine a seamless air and moisture barrier with advanced drainage capabilities over glass mat gypsum sheathing. The engineering of StoTherm® ci -SM fulfills the testing requirements for Small Missile impacts.
High-performing StoTherm® ci -LM exterior wall cladding assembly provides a seamless air and moisture barrier with CI, advanced drainage capabilities, and Sto Armor Mat XX Mesh for added reinforcement and impact resistance over glass mat gypsum sheathing. The engineering of StoTherm® ci -LM achieves the testing requirements for small and large missile impact performance on 16-gauge steel studs with gypsum sheathing.
High-performing StoTherm® ci HI-PLY exterior wall cladding assembly integrates a seamless air and moisture barrier with CI and advanced drainage capabilities over CDX exterior plywood sheathing. The engineering of StoTherm® ci HI-Ply meets the testing requirements for small and large missile impacts.
EIFSs structural benefits and aesthetic appeal make it an ideal product for new and retrofitted construction. Builders can apply these synthetic stucco multilayered systems to wood, steel or concrete substrates in any climate. Specific structural and design benefits include:
No. While EIFS (synthetic stucco) and traditional stucco look similar, several significant differences change how the stucco systems function:
If properly maintained, EIFS will last the life of the building. For example, StoTherm ci EIFS synthetic stucco systems applied in to U.S. buildings remain intact today. Proper maintenance includes:
Yes. However, EIFS repairs often require a professional with EIFS experience to avoid further damage and potential water infiltration. You can refer to the StoTherm® EIFS Reference Guide for information on repairing EIFS or contact one of our experienced representatives at 1-800-221-.
The best paint for EIFS should enhance your buildings character while providing superior protection against fading, mold, mildew, and crack bridging. The paint should also offer self-cleaning properties, vapor permeability, and low VOC.
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Fortunately, Stos architectural coatings provide all the features of a high-quality EIFS paint. We offer everything from acrylic-based permeable coatings to superhydrophobic coatings. Superhydrophobic coatings have self-cleaning properties and a biomimetic principle for fast drying after rain or dew. In addition, the coatings come in an assortment of textures and sheen, or we can tint them in an endless array of colors to fit all the needs of your exterior design. Click here to learn more about our high-performing coatings.
EIFS stucco is applied in multiple layers over the exterior sheathing. The typical components (layers) of an EIFS include:
An experienced professional typically installs EIFSs due to their complexity. Click here for Stos StoTherm® ci Install Guide or contact one of our experienced representatives at 1-800-221-.
All EIFS manufacturers in the Industry Members Association (EIMA) have passed ignitability, fire resistance, intermediate multi-story, and flame spread tests, meeting the standards of each test. EIFS and drainage EIFS generally utilize foam plastic as the insulation, making them combustible assemblies. Therefore, according to Chapter 26 of the IBC, they must test for all building heights. Furthermore, the IBC also mandates the testing of exterior walls to prove compliance with the acceptance criteria of NFPA 285 (Section .5.5). However, Sto also offers StoTherm ci Mineral EIFS with non-combustible Mineral Wool insulation.
Click here for more on NFPA 285 testing of Sto wall systems, or contact one of our experienced representatives at 1-800-221-.
EIFSs apply in multiple layers over exterior sheathing, to create energy-efficient, fire-resistant, low-maintenance, beautiful, and versatile exterior cladding. Over the years, significant improvements have solidified EIFSs as a superior choice for a durable, energy-efficiency cladding system.
Click here to learn more about Stos StoTherm® ci systems, drainable EIFS, or contact one of our experienced representatives at 1-800-221-.
Yes. The IBC (Section ) outlines the requirements for EIFS construction. For more information on StoTherm® ci code compliance, click here.
Yes. Fortunately, the EIFS Industry Members Association (EIMA) website offers updates, education, and resources to help EIFS applicators obtain affordable EIFS insurance with a list of knowledgeable EIFS insurance brokers.
Sto Textured Finishes provide architects, buildings, and homeowners complete design freedom with an extensive selection of finishes in many textures and color options, enhancing your design and harmonizing with the surrounding environment. We manufacture durable Sto finishes to the highest quality standards, to resist water and dirt to protect your building or home while providing outstanding curb appeal.
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The design of a long-lasting EIFS system should allow straightforward application, and limit long-term problems due to improper installation. A high-performing EIFS system should also provide impact and condensation resistance, all features offered by StoTherm ci EIFSSystems.
StoTherm ci Systems check all the boxes for a high-quality synthetic stucco cladding product excellent moisture management, low maintenance, durability, the energy efficiency of StoGuard® air and moisture barrier system, and comprehensive design options.
StoTherm ci Systems advanced integrated wall systems combine protective and aesthetic components into superior wall cladding. The systems high-performance features include:
Dont hesitate to reach out to one of our experienced representatives today to learn more about EIFS, or synthetic stucco.
Exterior finishing and cladding systems can have a significant impact on your buildings aesthetics, durability, energy efficiency, and longevity. There are many options to consider when designing a commercial building and the right type of cladding ultimately depends on the type of building and client requirements. However, EIFS tend to be one of the best options when it comes to complex construction due to their versatility, flexibility, and durability. Additionally, they offer building owners and designers a significant level of energy efficiency and flexible aesthetic design options. If youre planning the design or build a new commercial building, there are several reasons why EIFS might be a good option for your commercial project.
Exterior Insulation and Finish Systems, also known as EIFS, are one of the most versatile and commonly used cladding materials in commercial construction. An EIFS involves the use of expanded polystyrene boards which are attached to exterior sheathing and reinforced with a layer of fiberglass mesh. Designers can then apply a wide variety of colors or textures to meet the aesthetic objectives or requirements of the clients. EIFS have become increasingly popular over the last 30 years largely because they offer a tremendous amount of flexibility in complex construction.
EIFS offer a number of benefits for complex commercial construction projects:
In most cases, adhesives should be used to fasten all elements within your EIFS; however, there are certain occasions where metal fasteners may be used, such as when using certain types of wood sheathing. A reinforcing mesh layer should be attached directly to the substrate and then used to wrap around the edges of the insulation board, which should be added next. Before applying the insulation board, you need to ensure there arent any gaps or breaks between the various pieces. The entire insulation board surface must be smoothed with sandpaper, and then youll need to apply a protective base coat which should cover your mesh layer entirely. Next, you can apply your finishing coat along with any textures before finally adding sealant to the joints where your insulation boards meet any exterior features of the building.
EIFS have been around since the s, but have really exploded in terms of popularity over the past couple of decades. To truly unlock the benefits of EIFS, they must be installed properly by an experienced contractor.
If youre considering EIFS as an exterior option for your commercial building, contact us today at Unique Building Group. Our team has over 30 years of experience supporting general contractors, designers, and architects on complex construction projects. We have a proven track record of completing projects on-time and on-budget.
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