EWI involves externally cladding a building with insulation boards, before applying a layer of basecoat render and then a final decorative finish. Then a drainage cavity is created (usually by adding some sort of space between the foam and the WRB). EWI comprises a continuous layer of insulation that is fixed adhesively and/or mechanically to the outside of a building. [7], Particular product requirements need to be met such as the external wall insulation product reaching a particular u-value in order to make the building sufficiently thermally insulated and therefore be used for a green deal project. Traditional stucco is a centuries-old material which consists of aggregate, a binder, and water, and is a hard, dense, thick, non-insulating material. Mineral wool is the same type of material often used in lofts and cavity walls, except it is compressed into a sturdier rigid board. High quality acrylics can provide a longer term durability, colour stability, and crack resistance compared to polymer cement finishes. Reduced fuel consumption and therefore less CO. The boards are usually of shiplap profile, and either cedar or treated softwood. EIFS before 2000 were barrier systems, meaning that the EIFS itself was the weather barrier. through specialty building product distributors, who in turn resell the components to local EIFS installers. External Wall Insulation, Low Rise EWI, Refurbishment, External Wall Insulation, New Build, Non-residential EWI, External Wall Insulation, Low Rise EWI, Low Rise SEWI, Structural External Wall Insulation. Prefabricated External Wall Insulation Systems, New colour options with our Speciality Finish Ameristone, Introducing our new BBA Certificate for our Roxsulation Pro System, New colour options with our Speciality Finish TerraNeo, Shipston High School wins INCA new build & judges choice awards 2019, Roxsulation Pro - Designed to be used on new-build and refurbishment projects without height restrictions, Stone Mist check in to Motel One Manchester. It has medium-term durability under average conditions.[vague]. Refer to System Sheets for a guide to each system build-up see below. Roughcast render consists of a top-coat render and aggregate mix thrown onto a backing coat in a slurry form, the aggregate being totally encapsulated within the cementitious slurry. [6], External wall insulation is a great and confirmed way to reduce energy usage needed to heat up the building. BBA Certs., Finishes / Colours. EIFS are not generic products made from common separate materials. Furthermore, it tends to hold colour really well, so if you are going for a bright colour, acrylic might well be considered. In a study done by the Department Of Energy's Office of Science - Oak Ridge National Laboratory it was found that the best air/moisture barrier was a fluid barrier. It does have some drawbacks, however. For more information on how we use cookies, please read our privacy notice (Privacy Notice). Adhesives that contain Portland cement harden by the chemical reaction of the cement with water. Mineral wool is the same type of material often used in lofts and cavity walls, except it is compressed into a sturdier rigid board. Each has its own benefits and drawbacks. PM EIFS use extruded polystyrene insulation (XEPS), and a thick, cementitious base coat applied over mechanically attached glass fiber reinforcing mesh. SG17 5JD. Adhesives are commonly used to attach EIFS to gypsum board, cement board, or concrete substrates. Structherm’s comprehensive range of External Wall Insulation and Insulated Render (IR) systems are fully BBA approved. They provide a high degree of thermal efficiency, vapour permeability, impact resistance and large choice of textured finishes and colours. The other renders allow you to mix the colour into the render, which makes application easier and cheaper. It is also the cheapest of the three main types of render. The Government’s target is to make an 80% reduction in these emissions by 2050. This case was settled for 12 million dollars.[13]. By bringing insulation to the outside of external walls it eliminates thermal bridges; reduce air, wind and moisture penetration through the systems; stabilise interior environments and minimise thermal shock. Depending on a variety of site and project specific conditions, EIFS have the potential to save money in construction costs and contribute toward energy efficient operations and environmental responsibility when correctly designed and executed. K Systems, formerly Alumasc Facades, have been tried, tested & trusted for over 30 years, with solutions for external wall insulation systems (EWI). The thickness of thermal insulation is dependent on whatever type is required in order to create a partition with a heat transmission factor of U=0.25-0.3 W/m2K. The Pavatex Wood Fibre used by our partnered installers is a completely renewable material with extremely low pollution levels, and is able to bring down the U values of your external walls massively. To function properly, EIFS needs to be architecturally designed and installed as a system. Let’s take a look at the different materials. [12] However, some types and thicknesses of EIFS have been involved in large uncontrolled exterior building fires, such as the 2008 Monte Carlo Hotel Casino fire (https://www.nfpa.org/News-and-Research/Publications/NFPA-Journal/2008/May-June-2008/Features/Monte-Carlo-Hotel-Fire). The EIFS Industry Members Association (EIMA) defines two classes of EIFS, Class PB (polymer based) identified as PB EIFS and Class PM (polymer modified) identified as PM EIFS. Dry-dash render is a traditional render application commonly used. No risk of condensation as dew point occurs on the outside of the system. In many older properties, special attention is required for concrete beams or lintels which act as thermal bridges providing poor insulation. EIFS are proprietary systems of a particular EIFS manufacturer and consist of specific components. Exterior insulation and finish system (EIFS) is a general class of non-load bearing building cladding systems that provides exterior walls with an insulated, water-resistant, finished surface in an integrated composite material system.In Europe, systems similar to EIFS are known as External Wall Insulation System (EWIS) and External Thermal Insulation Cladding System (ETICS). Standard Details. External Wall Insulation is used on a wide variety of buildings from retrofitting existing homes to new buildings such as schools, homes and hospitals. External Wall Insulation systems also protect the building structure, prevent deterioration, and overcome thermal bridging and condensation problems. In Europe, systems similar to EIFS are known as External Wall Insulation System (EWIS) and External Thermal Insulation Cladding System (ETICS). The overall result is not only a highly insulated, energy efficient home. Mineral wool is a durable and breathable material that can be used on most external insulation applications. Mineral render is the more traditional type of render that has been used for many years. A very wide selection of light colours are available. The “stone” pattern is cut into the top layer exposing an under-layer of differing colour to represent the cement joints. EWI involves externally cladding a building with insulation boards, before applying a layer of basecoat render and then a final decorative finish. EIFS are attached with mechanical fasteners (specially designed for this application) when installed over housewraps (sheet-good weather barriers) such as are commonly used over wood sheathings. The external wall may be a cavity wall, rainscreen cladding system or an External Wall Insulation (EWI) system. A selection of traditional finishes is currently utilised within the external wall insulation industry. This system incorporates several different types of rigid insulation board. BBA Certs. Finishes come in a plastic pail, ready to use, like paint. The Oak Ridge National Laboratory, ATLANTA, Oct. 28, 2006 — EIFS "outperformed all other walls in terms of moisture while maintaining superior thermal performance." Some types of EIFS have passed some fire tests that range from resistance to ignitability, that include: ASTM E 119, NFPA 268, NFPA 285. The build up of the high polymer modified basecoat render incorporating a reinforcing mesh onto rigid insulation boards is similar to to that of the low rise system. Silicon render is the most expensive, but is easier to install than mineral render and has a number of advantages. Suitable for use over solid. This finish is widely used throughout the UK as an economical, easily applied colourful finish for all forms of building type. Brochure. [5] South Wales, where the housing stock is in particular need of being updated to become energy efficient, has seen a surge in applications for this scheme. There are two main types of insulation board – mineral wool insulation and EPS. The Energy Saving Trust give the following advice. Example of Materials and Workmanship Guarantee and System Specification Agreement can be found here…, 18 results for your search "Products & Systems - External Wall Insulation", Fast fix, lightweight brick finish system which can be used for refurbishment projects, External Wall Insulation system using specially designed mineral one-coat render, Lightweight external wall insulation system with a wide range of versatile and attractive finishes, High performance external wall insulation system with a finish made of authentic brick slips, Rapid drying, polymer-modified adhesive render coat which doesn't require primer. Real brick slips cut from reclaimed bricks, when used with external cladding systems are used significantly in restoration and renovation works where the brick is no longer available to buy new. Used together during the construction of buildings, various materials will determine the overall thermal performance of a wall. The system is then ready to receive a variety of decorative finishes. This page was last edited on 8 September 2020, at 17:16. [9], "The main damp issue to be avoided with external wall insulation is rising damp. EWI and finish system incorporating expanded polystyrene (EPS) insulation. We”ll take a look at your project, test the substrate and give you our honest opinion. It’s also one that is visually transformed on the outside. There are a c… Due to external application, residents are able to stay in their homes with minimal disruption to their lives. For one, EPS is a fair bit cheaper than rock wool so it is the obvious choice for funded insulation jobs. How do you know if standard EWI is fit for purpose? This is why Structherm also offer a full range of standard EWI systems. As demonstrated, our systems are highly versatile and can be used to create numerous external wall insulation systems for a range of properties and substrates. Whilst Structherm are renown for their unique Structural External Wall Insulation System we recognise that such a system may be over engineered for many projects. [8] As of 1997 EIFS accounted for about 4% of the residential siding market and 12% of the commercial siding market. EIFS mouldings or as they are commonly referred to, stucco mouldings, come in a large variety of shapes and sizes.