당신은 주제를 찾고 있습니까 “polymer based eifs – Exterior Insulation Finish System (EIFS)“? 다음 카테고리의 웹사이트 https://chewathai27.com/you 에서 귀하의 모든 질문에 답변해 드립니다: https://chewathai27.com/you/blog. 바로 아래에서 답을 찾을 수 있습니다. 작성자 Four Circles Eng’g Systems Enterprises 이(가) 작성한 기사에는 조회수 60,455회 및 좋아요 211개 개의 좋아요가 있습니다.
Description. The most common type of EIFS is the polymer based (PB) system. This system has a nominally 1/16 inch thick reinforced base coat applied to the insulation prior to application of the finish coat.Having a house with EIFS, also known as Dryvit, isn’t the end of the world. EIFS isn’t a disease; it’s synthetic stucco. And even though your house may have been built using it, with knowledge and proper maintenance everything can be just fine. EIFS is an Exterior Insulation and Finish System.An Exterior Insulation Finishing System (EIFS), also known as EWI (Exterior Wall Insulation Systems) or External Thermal Insulation Composite Systems (ETICS) is a type of cladding system that provides exterior walls with an insulated finished surface and waterproofing in an integrated composite material system.
- Energy Efficiency and Energy Codes. EIFS can reduce air infiltration by as much as 55% compared to standard brick or wood construction. …
- Durability. Unlike wood, stucco and other siding materials, EIFS rarely need painting. …
- Impact Resistance. …
- Design Flexibility/Aesthetics. …
- Moisture Control. …
- Fire Testing.
Table of Contents
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Sample procedural video of EIFS installation.
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What is the difference between PM and PB EIFS?
“PM” refers to Polymer Modified and “PB” refers to Polymer Based. Class PB EIFS typically use adhesively fastened expanded polystyrene (EPS) insulation, …
Source: www.gdconstructiongroup.com
Date Published: 1/5/2021
View: 4120
Polymer-Based Exterior Insulation and Finish System – BuildSite
See construction submittal data for Polymer-Based Exterior Insulation and Finish … Thermal Protection – Exterior Insulation and Finish Systems (EIFS) …
Source: www.buildsite.com
Date Published: 10/16/2022
View: 7878
POLYMER-BASED EXTERIOR INSULATION AND – PDF4PRO
Class PB EIFS: A non-load-bearing, exterior wall cladding system that consists of an insulation board attached adhesively, mechanically, or both to the …
Source: pdf4pro.com
Date Published: 6/3/2022
View: 4065
EIFS – BASF
Acrylic binders, polymers, and additives for formulating exterior insulation and finish systems (EIFS).
Source: www.basf.com
Date Published: 5/7/2022
View: 4637
POLYMER-BASED EXTERIOR INSULATION AND FINISH …
Bond Integrity: Free from bond failure within EIFS components or between system and supporting wall construction, resulting from exposure to …
Source: www.ordnerprojects.com
Date Published: 10/21/2021
View: 2500
Polymer Based EIFS Manufacturer Directory – CMD Group
Find Polymer Based EIFS manufacturers including access to downloadable specs, CAD and BIM objects through SmartBuilding Index, the resource construction …
Source: www.cmdgroup.com
Date Published: 4/9/2021
View: 9424
EIFS – Aztec Stucco
EIFS Exterior Insulation and Finish System. Picture … PB, or “polymer-based,” referred to a non-cementious finish coat, while PM, or “polymer modified,” …
Source: aztecstucco.weebly.com
Date Published: 2/20/2021
View: 7139
What is Exterior Insulation Finishing System (EIFS)?
This is polymer modified EIFS that uses extruded polystyrene insulation (XEPS) along with a cementitious base coat applied over mechanically attached glass …
Source: www.prodyogi.com
Date Published: 12/18/2021
View: 1440
주제와 관련된 이미지 polymer based eifs
주제와 관련된 더 많은 사진을 참조하십시오 Exterior Insulation Finish System (EIFS). 댓글에서 더 많은 관련 이미지를 보거나 필요한 경우 더 많은 관련 기사를 볼 수 있습니다.
주제에 대한 기사 평가 polymer based eifs
- Author: Four Circles Eng’g Systems Enterprises
- Views: 조회수 60,455회
- Likes: 좋아요 211개
- Date Published: 2019. 6. 1.
- Video Url link: https://www.youtube.com/watch?v=R9JAhAAhiEE
What is the difference between EIFS and Dryvit?
Having a house with EIFS, also known as Dryvit, isn’t the end of the world. EIFS isn’t a disease; it’s synthetic stucco. And even though your house may have been built using it, with knowledge and proper maintenance everything can be just fine. EIFS is an Exterior Insulation and Finish System.
What does EIFS stand for?
An Exterior Insulation Finishing System (EIFS), also known as EWI (Exterior Wall Insulation Systems) or External Thermal Insulation Composite Systems (ETICS) is a type of cladding system that provides exterior walls with an insulated finished surface and waterproofing in an integrated composite material system.
What is the difference between EIFS and DEFS?
An EIFS system would typically include an impact-resistant mesh over the entire surface of the foam boards. With DEFS, mesh is applied only at the joints, to help prevent the panel edges from telegraphing through the stucco.
What are the benefits of EIFS?
- Energy Efficiency and Energy Codes. EIFS can reduce air infiltration by as much as 55% compared to standard brick or wood construction. …
- Durability. Unlike wood, stucco and other siding materials, EIFS rarely need painting. …
- Impact Resistance. …
- Design Flexibility/Aesthetics. …
- Moisture Control. …
- Fire Testing.
When did builders stop using EIFS?
EIFS has been in use since the 1960s in North America, first on masonry buildings, but since the 1990s the majority on wood-framed buildings.
What is wrong with Dryvit?
The most common problems with Dryvit stucco are caulking and sealing issues that go unnoticed over time. This leads to serious mold issues that can get into the building structure and cause costly damage, as well as causing medical issues for residents.
What is better EIFS or stucco?
The fiberglass layer provides more durability, even against hard blows from weather. EIFS is notably lighter than traditional stucco, however. It is 80-percent less heavy than stucco, but it has a higher R-value, coming in between 4 and 5.6, which is notably higher than the 0.20 R-value of regular stucco.
How can you tell the difference between stucco and EIFS?
Go outside and knock on an outer “stucco” wall of your home. If it sounds hollow, there is a good chance you have EIFS. If it feels like you are knocking on a brick wall, it is more likely that you are knocking on traditional “hard-coat” stucco.
Is EIFS waterproof?
Originally, EIFS were designed as a ‘perfect barrier’ system—one which provides waterproofing protection at the exterior face of the cladding. The idea of barrier cladding assemblies is to create a face-sealed façade that repels moisture to keep the building dry.
Is acrylic stucco waterproof?
These stuccos are made from acrylic polymers and designed to be completely waterproof. They don’t breathe at all, which is great except when water does manage to get behind the surface, it has no way to escape, unless it can weep out the bottom of the wall.
What does DEFS mean in construction?
DEFS. Direct-Applied Exterior Finish Systems (building construction)
What is direct-applied EIFS?
Stated simply, the Direct-Applied Exterior Finish System (DEFS) is an application of Exterior Insulated and Finish Systems (EIFS) lamina directly to sheathing without the rigid expanded polystyrene foam layer.
What is the R value for EIFS?
EIFS is an adhesively attached insulating cladding system. There are no fastening penetrations to the insulating component of these systems, the expanded Polystyrene Foam. This foam has an R value of approximately 4-per-inch of thickness at a 1-pound density.
Can you put siding over EIFS?
One of the major perks of using fiber cement siding boards is that their trim can easily be installed over built-out sections of EIFS-covered exteriors.
What are EIFS panels?
Exterior Insulation and Finish System (EIFS) is an exterior wall cladding that utilizes rigid insulation boards on the exterior of the wall sheathing with a plaster appearance exterior skin. EIFS in its current basic form was developed in West Germany in the 1960s and introduced in the United States in 1969 by Dryvit.
Is Dryvit stucco or EIFS?
The product called Dryvit is a type of synthetic stucco that is applied as a final coat to another stucco system, such as EIFS, to keep water from penetrating the other layers of the wall. Hence the usage of “dry.”
What is better EIFS or stucco?
The fiberglass layer provides more durability, even against hard blows from weather. EIFS is notably lighter than traditional stucco, however. It is 80-percent less heavy than stucco, but it has a higher R-value, coming in between 4 and 5.6, which is notably higher than the 0.20 R-value of regular stucco.
How long does Dryvit last?
A. Dryvit EIFS are designed to last for the typical design life of a building. The actual longevity on any specific building will depend mainly on the building maintenance program. Some EIFS facades date back 50-60 years.
Can you pressure wash Dryvit?
The local Dryvit distributor can give you the name of contractors. CAUTION: If power washing by a professional, keep pressure under 600 psi and use cold, unheated water. Hold sprayer with a fan-tip nozzle at a 45° angle from the wall (not perpendicular) and keep spray tip at least 2′ 0″ from surface.
Exterior Insulation and Finish System (EIFS)
Introduction
Exterior Insulation and Finish System (EIFS) is an exterior wall cladding that utilizes rigid insulation boards on the exterior of the wall sheathing with a plaster appearance exterior skin. EIFS in its current basic form was developed in West Germany in the 1960s and introduced in the United States in 1969 by Dryvit. The Dryvit system consisted of expanded polystyrene (bead board) attached adhesively to the sheathing and covered with a lamina composed of a modified cement base coat with woven glass fiber reinforcement and a textured colored finish coat. Over the years, variations of this system have been developed.
Description
The most common type of EIFS is the polymer based (PB) system. This system has a nominally 1/16 inch thick reinforced base coat applied to the insulation prior to application of the finish coat. The insulation typically consists of closed expanded polystyrene (EPS) and can be either adhesively or mechanically attached to the sheathing. The second and less common type of EIFS is the polymer modified (PM) system. This system has a nominally 3/16 inch to 1/2 inch thick reinforced base coat applied to the insulation prior to application of the finish coat. The insulation typically consists of extruded expanded polystyrene (XPS) and is mechanically attached to the sheathing and or wall structure.
EIFS is available in two basic types: a barrier wall system or a wall drainage system. Barrier EIFS wall systems rely primarily on the base coat portion of the exterior skin to resist water penetration. Therefore, all other components of the exterior wall must either be barrier type systems or be properly sealed and flashed to prevent water from migrating behind the EIFS and into the underlying walls or interiors. Wall drainage EIFS systems are similar to cavity walls; they are installed over a weather barrier behind the insulation that acts as a secondary drainage plane. The weather barrier must be properly flashed and coordinated with all other portions of the exterior wall to prevent water from migrating into the underlying walls or interiors.
Fundamentals
All EIFS are proprietary systems and the components of the system should not be modified beyond the limits stated in the manufacturer’s literature. The design of the interface with other components of the wall system is the responsibility of the wall designer. Details should make clear the design of the final construction. If necessary, the sequence by which the wall assembly is to be constructed is addressed in the details. In general, construction conditions of the EIFS that should be detailed if they exist on the building include terminations, openings, joints, objects mounted onto the surface and special treatments to the surface.
Performance Issues
Thermal Performance
The popularity of EIFS comes from its insulating qualities to reduce thermal loads on the exterior building wall and the light weight, low cost, and the ability of the system to be sculpted into shapes and patterns to achieve different aesthetic effects. The thermal performance of the exterior insulation is based on the thickness of the insulation selected. The insulation should never be installed or modified to less than 3/4 inch in thickness.
Moisture Protection
Problems observed with in-service EIFS installations are primarily related to moisture intrusion. EIFS provides protection against moisture infiltration at the base coat; however, moisture migration through openings for windows, flashings and other items, or holes and cracks in the EIFS itself, have allowed leakage to occur on EIFS clad buildings. With barrier EIFS installations, or where weather barriers and flashing are improperly installed in conjunction with wall drainage EIFS installations, moisture has entered the wall system at these locations and caused damage to the wall sheathing and framing. The extent of these occurrences on wood frame structures has led to class action lawsuits.
Fire Safety
Consult the EIFS Industry Members Association (EIMA) for additional information on this topic.
Acoustics
Consult the EIFS Industry Members Association (EIMA) for additional information on this topic.
Material/Finish Durability
EIFS finish coats come in a wide variety of colors and textures similar to those of stucco. Since the base coats are relatively thin, especially in PB systems, they are susceptible to impact damage. Color retention is relatively good.
Common Problems for EIFS are as follows:
Failure to install or properly install sealant joints around windows, doors, pipes, conduits, and other penetrations of the field of the EIFS.
Failure to flash window and door openings in the field of the EIFS to divert leakage through the window or door to the exterior.
Failure to install diverters (kick-out flashing) at ends of roof flashing terminating in the EIFS wall.
Failure to properly backwrap edges of EIFS at terminations and penetrations in the field of the EIFS.
Failure to install expansion joints at floor lines in EIFS applied over wood frame construction.
Failure to notch insulation boards at corners of openings for windows and doors to avoid insulation board joint at the corner of the opening.
Failure to install diagonal mesh in lamina at corners of openings for windows and doors.
Failure to terminate EIFS above grade, especially in termite prone regions.
Installation of decks over EIFS without proper flashing.
Unrepaired impact damage.
Inadequate base coat applications at corners.
Inadequate base and finish coat application in reveals.
Installation of reveals at board joints.
Lack of adequate slope on skyward facing surfaces.
Damage from ropes, cables, etc. to EIFS parapet tops.
Maintainability
Maintenance of the EIFS lamina and sealants at penetrations or terminations is critical to the performance of the water resistive characteristics of the EIFS. Holes and cracks should be repaired as soon as possible. Repair methods for holes and cracks in EIFS are simple and the manufacturers publish recommended methods. Maintenance of joints sealants is the same as that for other types of wall claddings, except that care must be taken to prevent damaging the EIFS when existing sealants are removed.
Applications
See Appendices for climate-specific guidance regarding building enclosure design.
Details
Please see the details section and consult the manufacturers web pages referenced in this section for additional information regarding this topic. Due, in part, to issues and concerns related to the integration of EIFS with surrounding wall systems and wall penetrations in both residential and multi-family, commercial-scale construction, the EIFS industry and its members have developed a series of informative and well-developed, three-dimensional details for façade interfaces and related conditions that are useful starting points for detailing EIFS.
The following details can be downloaded in DWG format or viewed online in DWF™ (Design Web Format™) or Adobe Acrobat PDF by clicking on the appropriate format to the right of the drawing title.
Drained EIFS Roof Interface Kickout Flashing DWG | DWF | PDF
Drained EIFS Window Head and Jamb DWG | DWF | PDF
Drained EIFS Window Sill and Jamb DWG | DWF | PDF
Emerging Issues
Emerging issues in the EIFS industry include:
Drained EIFS
Improved Interface Detailing for Exterior Wall Penetrations
Developing Field Test Standards for Water Penetration Resistance (ASTM)
Relevant Codes and Standards
There are virtually no limitations on the locations where EIFS can be used as an exterior wall cladding beyond those imposed by codes. These occurrences of water infiltration have also led to many code restrictions on the use of EIFS. These code restrictions are evolving and changing as further testing is developed and implemented. Most codes require a code evaluation report for the selected manufacturer’s system and may impose additional restrictions on the use of barrier EIFS. Applicable local codes should be consulted prior to designing EIFS claddings.
Codes also restrict the maximum thickness of the insulation, particularly with regard to fire protection. Most codes limit thickness to 4 inches maximum or require a study of the average fuel contribution of the insulation.
Additional Resources
WBDG
Design Objectives
Functional / Operational—Ensure Appropriate Product/Systems Integration
Products and Systems
See appropriate sections under applicable guide specifications: Unified Facility Guide Specifications (UFGS), VA Guide Specifications (UFGS), DRAFT Federal Guide for Green Construction Specifications, MasterSpec®
Major resources for information regarding EIFS and its proper use are manufacturer’s catalogs containing product description and standards, specifications, details, and installation instructions; the Exterior Insulation Members Association (EIMA); and ASTM International.
Publications
CMHC Best Practice Guide—EIFS
Organizations/Manufacturers
Understanding Synthetic Stucco or Dryvit
Having a house with EIFS, also known as Dryvit, isn’t the end of the world. EIFS isn’t a disease; it’s synthetic stucco. And even though your house may have been built using it, with knowledge and proper maintenance everything can be just fine.
It pays to be informed
EIFS is an Exterior Insulation and Finish System. Some people call it synthetic stucco. It’s made of lightweight, two inch thick polystyrene panels with an acrylic coating that mimics traditional stucco. Although marketed as a “maintenance-free” product you need to keep an eye on how it’s holding up. Moisture that gets in through poorly caulked joints or surface punctures can get trapped and cause the framing and plywood sheathing underneath to rot, leading to costly repairs.
Check and see if your stucco is “real” or EIFS
Lightly knock on the surface. EIFS sounds hollow while traditional stucco is solid. Press lightly on the surface. EIFS gives slightly while real stucco is very hard. EIFS exteriors have caulking, while real stucco exteriors do not. And if you can place your hand under and behind the bottom edge it’s probably EIFS. Also don’t ignore synthetic stucco used other places as a decorative element. EIFS always needs to be installed and maintained as if it were used to side the entire house.
How to maintain your “maintenance-free” siding
Regular inspection is key to making sure seams are intact and the surface hasn’t been damaged. Always check after a windstorm as limbs may dent or pierce the siding. Woodpeckers can also create holes that will let water in. And you should never attach anything to this siding that punctures the surface such as mailboxes, hose holders, street numbers and planter boxes. EIFS should not contact the ground or another surface where water accumulates. This could allow moisture to be absorbed through the bottom of the wall. Certain brands of siding may call for specific repair techniques. Don’t hesitate to call a professional if they seem beyond your comfort level.
A few words about the installation
EIFS is not a “do-it-yourself” type of product. Proper installation is critical to the product’s performance. To qualify for a warranty make sure that the installer is certified by the manufacturer to install their product
Contact The Andrew Agency for Insurance
We think you will rest easy when knowing you’ve reduced your chances of having an unexpected problem. That’s why The Andrew Agency provides simple information and tips like this to help you understand your coverage and prevent losses. If you are buying a home with Dryvit and need insurance contact us at (804) 320-2886.
Exterior Insulation Finishing Systems
What is EIFS / ETICS?
An Exterior Insulation Finishing System (EIFS), also known as EWI (Exterior Wall Insulation Systems) or External Thermal Insulation Composite Systems (ETICS) is a type of cladding system that provides exterior walls with an insulated finished surface and waterproofing in an integrated composite material system. Put another way, an Exterior Insulation Finishing System / External Thermal Insulation Composite Systems can be defined as an ideal energy efficient thermal wrapping or facade insulation applied to the exterior surfaces of a building which is then finished with a long-life, decorative and protective wall coating that can be installed on any type of construction.
In the construction industry, there are a number of versions of EIFS / ETICS. The most basic and common EIFS / ETICS is called a barrier EIFS, also known as traditional or conventional EIFS / ETICS, which is applied to a solid wall (brickwork, blockwork, pre-cast panels and the like). Another type is called EIFS / ETICS with drainage, which is a barrier EIFS / ETICS to which a water drainage capability has been added. This is done mainly for wood structures.
Sectional view of typical EIFS / ETICS facade insulation on a solid wall Sectional view of typical EIFS / ETICS on a wood substrate
What is the difference between Stucco and EIFS / ETICS?
While similar in appearance to stucco (or conventional rendered plaster), EIFS / ETICS is an exterior wall cladding system that consists of components and installation requirements very different from traditional stucco. EIFS / ETICS also requires very different care and maintenance than its “look-alike” cousin, traditional EIFS stucco.
To function properly, EIFS / ETICS needs to be architecturally designed and installed as a system by trained applicators.
EIFS / ETICS Components
While giving the appearance of stucco (or conventional rendered plaster), EIFS / ETICS is actually a multi-layered wall system that consists of the following components:
Adhesive – Used to “glue” the insulation board to the exterior wall surface.
Insulation Board – Made of polystyrene or mineral wool which is secured to the exterior wall surface.
Mechanical Fasteners – Used to fasten the Insulation Board to the exterior wall surface.
Base Coat – Applied on top of the insulation and reinforced with EIFS glass fibre mesh.
Finish Coat – Applied on top of the primed base coat giving a decorative, durable, crack-resistant finish.
The History of Terraco EIFS / ETICS
Terraco first launched its EIFS / ETICS systems in Turkey and Korea in the 1980s, which was then expanded to Russia, China and the Middle East during the 1990s. Today Terraco offers 3 different EIFS /ETICS systems – EIFS Alpha, EIFS Polar and EIFS Perma – the difference being the type of insulation materials used in each system. Terraco also offers a system for insulated concrete form – ICF Zenith.
History of EIFS / ETICS
1950s
Two significant developments took place during 1952 that led to the development of EIFS / ETICS in Europe. The first patent was granted for expanded polystyrene (EPS) insulation board and the first synthetic plaster, an organic plaster using water based binders, was developed. The use of EPS and synthetic resin materials together began in the late 1950s.
1960s
EIFS / ETICS was marketed in Europe as it answered a need in the European construction market for a material that could insulate older masonry structures and enhance their appearance. European EIFS (ETICS) tended to have a thicker and coarser finish, to provide for better waterproofing. The systems used in Europe also featured the use of less Portland cement and a higher resin content in the base coat, giving the system more flexibility and water resistance.
The technology for EIFS / ETICS was transferred to the United States in the late 1960s where the use of EIFS / ETICS on stud-and-sheathing framing (instead of over solid walls) was developed.
1970s
During the oil crisis of the early and mid-1970s, EIFS in the United States became popular with energy-conscientious builders and buyers, who sometimes saw energy bills halved. In the United States, EIFS began by being used almost exclusively in the commercial building market, and was only gradually adopted for use in homes.
1980s
By 1980, EIFS cladding accounted for 0.5% of the residential housing market in the USA.
By 1995 nearly 18 million m² of EIFS were being installed annually on exterior walls in North America, predominantly on wood structures.
1990s
By the mid 1990’s the industry suffered a setback in the United States when a number of EIFS clad homes were discovered with moisture damage caused by water leakage, which was a nationwide issue. The water ingress was attributed to poor construction detailing and installation practices. Class action lawsuits were filed and settled by manufacturers in the United States.
By late 1999, the United States NAHB (National Association of Home Builders) Research Centre identified the most common problems associated with water intrusion in EIFS as being windows, doors, electrical outlets, roof flashings, projections, air vents and below grade installation. Building codes were introduced which mandated EIFS use drainage on wood frame building and additional on-site inspection.
By the turn of the century, in Europe, the decisions by numerous governments to introduce an energy rating system on buildings supported by government aided funding / rebates has seen as rapid growth of EIFS. While the use of EIFS over stud-and-sheathing framing (instead of over solid walls) is a technique still used all over North America, certain parts of Europe and the Pacific Rim.
The EIFS / ETICS industry now faces the challenge of formulating fire-resistant Exterior Insulation Finishing Systems, through the use of incorporating fire retardant materials and / or fire breaks in the system, something Terraco has been focussing on for quite some time.
Synthetic Stucco Without Failures
An EIFS system would typically include an impact-resistant mesh over the entire surface of the foam boards. With DEFS, mesh is applied only at the joints, to help prevent the panel edges from telegraphing through the stucco. Like the mesh applied at the WRB layer, the mesh applied to the joints at the base panel layer is embedded—only in this case the embedding material is the stucco base coat (see image).
The base panel should finish out at least 2 inches above a paved surface or above a sloped roof (see image 9). Above exposed grade, most man- ufacturers will allow a minimum of 6 inches, which conforms with the 2009 IRC, but better is the old code standard of 8 inches, to keep the bottom of the stucco out of the splash zone at the dripline.
This base coat is a cementitious material. It’s not quite as hard as the scratch coat in a traditional three-coat system, and it doesn’t go on as thick. Each manufacturer provides specifications for the thickness, typically around 3/8 inch to 1/2 inch per coat. What’s critical is that the material be applied at a consistent thickness, so there are no sags or recesses. Much like with a plastered interior wall, imperfec- tions in the base coat will telegraph through the finish coat.
Detailing Windows and Doors
As mentioned earlier, the detailing of windows and doors starts at the WRB layer. After the base coat has cured, we apply a foam trim (see image 1) and give that a base coat (see image 2). The trim is held 3/8 inch away from the edge of the window or door, creating a channel that will later be sealed with backer rod and caulk, as shown in the illustration above.
For the trim, we use a pre-formed foam trim. This is sold either as pre-finished trim or as a starter strip for EIFS foam board with a “backwrapped” edge. This ensures that the edge and back are coated with an even base coat that will keep water from being absorbed into the EPS trim, and it provides a uniform surface for the caulk sealant, which is applied as a final step after the finish coat. When we finally do apply the backer rod and caulk around the windows, we want the sealant to adhere to the backwrapped edge, not to the finish coat. The thinking here is that the contraction of the sealant, which tugs at the ends of its hourglass profile, could cause the finish coat to separate from the base coat. To prevent this from happening, we are careful to tape the windows so that the edge of the tape se- curing the poly that protects the windows will give us a crisp edge to which we can apply our sealant, free of any finish topping (see image 3).
Benefits of EIFS
The growing popularity of EIFS is due to the fact that few, if any, competitive materials offer such a wide range of desirable product benefits. Chief among these are superior energy efficiency and virtually unlimited design flexibility. Energy Efficiency and Energy Codes EIFS can reduce air infiltration by as much as 55% compared to standard brick or wood construction. And since walls are one of the greatest areas of heat and air conditioning loss, improvement in the wall insulation can be very meaningful in terms of energy conservation. What’s more, EIFS add 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. Another point to keep in mind on new construction: Due to the energy efficiency of EIFS, it may be possible to specify lower-capacity heating and air conditioning equipment without sacrificing anything in terms of interior comfort. The US Department of Energy (DOE) mandated on October 18, 2013, all States update their commercial building code to meet or exceed ASHRAE Standard 90.1 – 2010. EIFS was the first to meet standards of Continuous Insulation (CI) and has long been the solution to the expanded requirements. There are a variety of case studies available validating the energy savings associated with EIFS; for a recent example of EIFS in action, you can check out the 2012 Better Buildings Federal Awards Program results, where an EIFS cladded building helped reduce energy use by nearly 45% in a 12 month period. Durability Unlike wood, stucco and other siding materials, EIFS rarely need painting. Most EIFS systems are specially formulated with 100% acrylic binder, which gives EIFS superior resistance to fading, chalking and yellowing. As a result, the systems tend to maintain their original appearance over time. And since the color is integral to the finish coat, even if the surface is scratched, the same color appears beneath the abrasion. EIFS also have excellent resistance to dirt, mildew and mold, which helps keep the building exterior looking clean and freshly painted. Should the surface ever become soiled, it can usually be cleaned by hosing it down. The systems are designed to be very flexible, which makes them highly crack resistant. When walls expand or contract due to rising or falling temperatures, EIFS are resilient enough to “absorb” building movement and thus avoid the unsightly cracking problems that are so common with stucco, concrete and brick exteriors. EIFS has passed the stringent Miami-Dade County Hurricane Test, showing no impact against hurricane style weather. Click to purchase the publication. Impact Resistance EIFS are sustainable, durable, and resilient. Highly impact resistant EIFS are easily achievable using industry standard application practices and products that are very effective and economical. The keys to high impact resistant EIFS are the same as for any quality construction: good design, firm and definitive specifications, use of the proper products, and proper construction. Impact Resistant EIFS: Tough and Tested is a document that provides information and guidance to designers and specifiers regarding how to achieve impact resistant performance that is in line with project and owner expectations. Design Flexibility/Aesthetics The rich appearance of EIFS bears a resemblance to stucco or stone, but the systems are far more versatile than these and other materials. Not only do EIFS come in virtually limitless colors and a wide variety of textures, but they also can be fashioned into virtually any shape or design. With EIFS, skilled applicators can create all sorts of exterior architectural detailing that would often be cost-prohibitive using conventional construction — cornices, arches, columns, keystones, cornerstones, special moldings and decorative accents are but a few examples. Using this ingenious process, EIFS applicators can give a striking, distinctive appearance to any building or residence. Moisture Control Recent research, conducted by the Oak Ridge National Laboratory and supported by the Department of Energy, has validated that EIFS are the “best performing cladding” in relation to thermal and moisture control when compared to brick, stucco, and cementitious fiberboard (commonly known as fiber cement) siding. EIFS are among the most water resistant exterior surfaces you can put on a house. But as with all claddings, EIFS must be correctly installed and properly detailed if they are to perform properly. Otherwise, moisture can get behind the systems and cause damage, just as it can with wood siding, brick or any other exterior. Water intrusion is seldom a problem on commercial structures with EIFS. Water intrusion damage to homes is uncommon, but when it does occur, the moisture typically affects only small areas which can be easily and inexpensively repaired. In cases where homes have been damaged, the problems have been traced to the use of poor quality (even leaky and/or non code-compliant) windows and/or improper flashing and sealing. As a result, when building with EIFS, it is wise to use quality windows (such as those with AAMA certification) which are code-compliant, and to make sure there is proper flashing and sealing around windows, doors, roofs, deck-to-house attachments, and all other exterior wall penetrations. Periodic maintenance should include thorough checking of the flashing and sealing to ensure that the building envelope remains watertight. Damaged or missing flashing should be repaired or replaced immediately; likewise, cracked or deteriorated sealants should immediately be repaired, or removed and replaced. Fire Testing EIFS have passed the major fire resistance tests that are required by the building codes. EIFS have passed fire resistance, ignitability, intermediate multi-story, and full scale multi-story corner tests; meeting the standards set forth with each test. These tests include: Fire Resistance (ASTM E 119) – EIFS PASSED, showing no negative effect on the fire resistance of a rated wall assembly.
Ignitability (NFPA 268) – EIFS PASSED with no ignition at 20 minutes of radiant heat exposure.
Intermediate Multi-Story Fire Test (NFPA 285 (UBC 26-9)) – EIFS PASSED
Criteria included resisting the spread of a flame within combustible core/component of panels from one story to the next. In addition, resisting lateral spreading of flames from the origin of the compartment fire to adjacent spaces. Manufacturing Member
Associate Member
Frequently Asked Questions
We try to anticipate questions you might have about our PRODUCT / SERVICE and provide the answers here. If you need additional information send email to [email protected] 1. What does EIFS stand for? EIFS (pronounced eefs) is an acronym for Exterior Insulation and Finish System. An EIFS consists of five basic components: Insulation board, made of polystyrene or polyisocyanurate foam.
A specially formulated adhesive and/or mechanical attachment of the insulation to a substrate.
Glass fiber reinforcing mesh.
A durable, water-resistant base coat, which is applied on top of the insulation that functions as the weather barrier.
An attractive and durable finish coat — typically using acrylic co-polymer technology — which is both colorfast and crack-resistant.
2. What is the difference between PM and PB EIFS? “PM” refers to Polymer Modified and “PB” refers to Polymer Based. Class PB EIFS typically use adhesively fastened expanded polystyrene (EPS) insulation, and glass fiber reinforcing mesh embedded in a nominal 1/16 inch (1.6mm) base coat. PB EIFS can incorporate additional layers of base coat and reinforcing mesh to achieve higher impact resistance. An EIFS finish coat is used over the base coat. PB EIFS represents the majority of EIFS used in North America. Traditionally, Class PM EIFS use extruded polystyrene insulation (XEPS), and a thick, cementitious base coat applied over mechanically attached glass fiber reinforcing mesh. The system has joints similar to traditional stucco. PM EIFS have evolved to include different insulation materials and base coats. A standard finish is used although an elastomeric finish can be used to bridge hairline cracks that may occur in the thicker base coat.
3. What is the maximum thickness allowed for foam shapes to achieve architectural treatments such as accent bands and cornices? The national model building codes generally limit foam thickness to a 4-inch maximum. However, precedence exists for using thicker expanded polystyrene foam insulation when acceptable to local authorities having jurisdiction.
Polymer-Based Exterior Insulation and Finish System
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EIFS
Polymers and additives for exterior insulation and finish systems
Exterior insulation and finish systems (EIFS) have become a popular choice for commercial construction, particularly for office buildings, hotels and resorts. EIFS construction not only provides unlimited aesthetic design options but it also helps building owners meet increasingly stringent energy codes.
EIFS provide unique and eye-catching finishes while helping to reduce construction time and costs versus alternative cladding systems.
The EIFS system consists of multiple layers:
Polymer Based EIFS Manufacturer Directory
Polymer Based EIFS Manufacturers
Below is a directory of polymer based eifs manufacturers (MF 07 24 13) with links to get more information about each company.
What is Exterior Insulation Finishing System (EIFS)?
EIFS or Exterior Insulation Finishing System is an external cladding system used to provide insulation, finishing and waterproofing to the building exterior. EIFS is a synthetic wall cladding that is usually have a plastic insulation, foam and a synthetic coating. EIFS are usually placed on the building exterior, using a adhesive agent attached to gypsum board.
Fig. What is Exterior Insulation Finishing System (EIFS)?
Lets look into the important features of EIFS and its construction details.
Features of EIFS in Building Construction
EIFS are non-bearing building cladding systems provided at the exterior. EIFS provide insulation, water-resistance and a finished surface EIFS are a composite material system EIFS are also called as External Wall Insulation System (EIWS) and External Thermal Insulation Cladding System (ETICS) in Europe EIFS is a lightweight synthetic wall cladding EIFS include foam plastic insulation and synthetic coating. EIFS are not generic products that are made from common separate materials. They are architecturally designed and installed as a system as per the requirements. This is a product that is manufacture dependent. All EIFS manufacturers are not compatible and must not be used interchangeably
Read More On: Fire Separation Walls For Buildings -Firewalls
Installation of EIFS
The EIFS units are attached to the outside face of the exterior walls using an adhesive or mechanical fasteners. The adhesive used for the purpose can be either, cementitious or acrylic based Usually, these adhesive agents are used to attach the EIFS units onto a gypsum board, cement board or concrete substrates. Mechanical fasteners are used when EIFS are installed over housewraps. The supporting structure should be continuous without any open framing and be flat. Classification of EIFS
EIFS are mainly classified into two types based on the material used and the availability of a drainage system. Hence, there are:
Class PB Class PM 1. Class PB EIFS
This is the polymer based EIFS system that are commonly used in North America. It uses expanded polystyrene (EPS) insulation adhered to the substrate with fiberglass mesh embedded in a nominal 1.6mm base coat. This can receive additional layers of mesh and base coat to increase the impact resistance. A polyisocyanurate insulation board can also be used.
Fig. Class PB EIFS – Using Expanded Polystyrene
Image Credits: PALADIN
2. Class PM EIFS
This is polymer modified EIFS that uses extruded polystyrene insulation (XEPS) along with a cementitious base coat applied over mechanically attached glass fiber reinforcing mesh. PM EIFS make use of different insulation materials and base coats based on the requirements.
Read More On: What are EIFS Drainage Systems?
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Exterior #Insulation #Finish #System #(EIFS)
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