The Long Term Thermal Resistance (LTTR) of XPS is therefore less than its "initial" R-factor. This manufacturing process involves melting together the plastic resin and other ingredients. Expanded Polystyrene Insulation is a lightweight insulation, made of polystyrene foam beads. Expansion of the beads is achieved by virtue of pentane gas, a blowing agent, which is entrapped in the expandable beads. It must also be noted that stated R-values of insulations products vary under different conditions and truly credible comparisons must take into consideration the specific brands of foam and specific test conditions. EPS (expanded) and XPS (extruded) are both closed-cell rigid insulation made from the same base polystyrene resins. XPS foam is considered to have a closed-cell structure wherein the cells are packed together tightly and have no voids or spacing between them. What is Extruded Polystyrene or XPS Polystyrene Foam? Inconsistent gaps between the EPS foam cells allows air & moisture to permeate throughout the foam, making EPS a less than ideal solution for moist environments. Polystyrene is commonly injection molded, vacuum formed, or extruded, while expanded polystyrene is either extruded or molded in a special process. EPS (Expanded Polystyrene) or as many know by The Dow Chemical Company's trademarked name, STYROFOAM, is an extremely lightweight product that is made of expanded polystyrene beads.Originally discovered by Eduard Simon in 1839 in Germany by accident, EPS foam is more than 95% air and only about 5% plastic. There are two types of EPS: expanded and extruded polystyrene. Since density affects the physical properties of the polystyrene and cost it is important to understand what densities are most suitable for which construction applications. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Request a Quote for an Insulated Garage Door. The data from these three studies was combined for a more reliable determination of both XPS and EPS … XPS stands out through: very low moisture absorbtion, high compressive … These sheets have a closed-cell structure and virtually no air-voids in between the cells. Although manufacturers of XPS and EPS often tout the fact that their products can be recycled, a complete life cycle analysis shows that EPS has a better overall environmental impact when compared to XPS. Refer to the data sheet link for additional information on EPS properties. EPS can be recycled in many ways once it comes to the end of its life. Insulating: The thermal insulating properties of EPS help keep food fresh and prevent condensation throughout the distribution chain. EPS (Expanded Polystyrene) Vs Polyurethane. Avant les préoccupations pour la couche d'ozone, on utilisait le fréon, un gaz CFC (chlorofluorocarboné), remplacé depuis les années 1990 par du butane ou du pentane.Des transformateurs introduisent les perles de PS cristal dans des pré-expanseurs. Two-inch extruded polystyrene foam (XPS) is typically used as one-inch foam is too fragile to place under a slab. Différence entre un polystyrène expansé et un polystyrène extrudé. Expanded (EPS) and extruded polystyrene (XPS) are both made from polystyrene, but EPS is composed of small plastic beads that are fused together and XPS begins as a molten material that is pressed out of … It’s the less expensive option of the two and is most appropriate for above-grade applications. When combining an XPS foam core with a plastic facer like our UltraBoard Classic product, you get an all-plastic board that is ideal for many interior environments and has a durability rating of 10 years. Once in the mold, the pre puff beads are again steamed to form a block that is anywhere from 37-1/2″ – 54″ x 49″ x 121-1/2″ – 220″. An extremely cost effective packaging material, it is moisture resistant, a good thermal insulator, (insulation R-value of … POLYURETHANE HAS AN R-VALUE as high as R-7 and as low as R-8 / INCH. XPS performs better than EPS. Polystyrene vs. Polyurethane Garage Door Insulation. In other words, it has a higher insulation performance factor, which makes it very suitable for areas that require more insulation like attics, walls and basements. R- Value – P olyurethane is the most efficient manmade insulation in the world. Son coefficient thermique est meilleur donc il vous faudra moins d'épaisseur pour un même résultat. These include recycling directly into new building products and incineration to recover its inherent energy content. Extruded Polystyrene … Extruded polystyrene (XPS) is also a thermoplastic polymer. 2 lb nominal density EPS (expanded polystyrene) has become a very popular alternative to extruded polystyrene for under slab and perimeter foundation wall insulation. This means that it is rigid foam, so is ideal for securing to external walls. Expanded polystyrene typically holds a higher R-value than extruded polystyrene. The 2 lb EPS is available in any … To add, because expanded polystyrene can be shaped into blocks and sheets to extruded polystyrene foam that often contains color dyes, EPS may be less harmful to the environment. These cookies do not store any personal information. The three studies reported the in-service R-values per inch of extruded polystyrene (XPS) and expanded polystyrene (EPS) insulation installed under roads and airport runways with the time in service ranging from 1 to 31 years. The food service … However, the growing trend towards the use of environmentally friendly products and the potential volatility of rising oil prices has led to a marked increase in the use of molded fiber packaging. le polystyrène extrudé est meilleure car il est plus dense, 35 kg de densité au m3 au lieu de 15 pour l'expansé. EPS. The simplest recycling involves crumbling the old EPS into small pieces and remolding them into usable shapes. When building or renovating a high-performance building envelope there are really three main kinds of rigid foam panels you are going to have to choose from - Polyisocyanurate known as Polyiso (PIR), Extruded Polystyrene (XPS) - often called Styrofoam - and Expanded Polystyrene (EPS). The Difference between Expanded Polystyrene and Extruded Polystyrene. Polyurethane has been developed to alleviate the shortfalls of EPS. It is commonly understood that XPS offers more initial R-value per inch than EPS but because of its lower cost, EPS offers more R-value per dollar. The key difference between expanded and extruded polystyrene is that we produce expanded polystyrene (or EPS) from solid beads of polystyrene while we produce extruded polystyrene (or XPS) from solid polystyrene crystals. POLYSTYRENE has a R-value as high as R-5 and as low as R-2 per inch. XPS and EPS, manufacturing-wise but also performance-wise represent two different groups of rigid thermal insulation materials. This category only includes cookies that ensures basic functionalities and security features of the website. EPS is made of 98% trapped air and only 2% plastic, making it an efficient insulator with a small amount of raw material. What is Extruded Polystyrene or XPS Polystyrene Foam? Styrofoam extruded polystyrene is light weight and easily bonded. The two types of boards have different technical properties. U.S. Cooler manufactures walk-in coolers and freezers employing both Polyurethane and Extruded Polystyrene. Both begin with the same basic raw material. EPS vs XPS (Expanded Polystyrene vs Extruded Polystyrene) 2 lb nominal density EPS (expanded polystyrene) has become a very popular alternative to extruded polystyrene for under slab and … There are many ways you can insulate your homes, whether it's to help retain the heat or prevent cold air from getting in. FMI-EPS | Learn the difference between Expanded Polystyrene (EPS) & Extruded Polystyrene (XPS) See why EPS holds a better R-Value compared to XPS. In expanded polystyrene there are interstitial gaps between the expanded closed-cell pellets that form an open network of channels between the bonded pellets, and this network of gaps can become filled with liquid water. Is polystyrene insulation any good? While XPS is "extruded" into a close approximation of its final form, EPS is manufactured in large blocks that are subsequently cut by hot-wire machines into sheets or cut into virtually any special shape or form by computer-driven systems. Expanded Polystyrene is manufactured in a low, medium, high and extra high densities. If the water freezes into ice, it expands and can cause polystyrene pellets to break off from the foam. … Block… This means that it is rigid foam, so is ideal for securing to external walls. Expanded polystyrene and extruded polystyrene are both made from polystyrene, but EPS is composed of small plastic beads that are fused together and XPS begins as a molten material that is pressed out of a form into sheets. Any polystyrene … It is produced from general purpose polystyrene by the process of extrusion or expansion. Expanded polystyrene (EPS): With an R-value of 3.6 to 4.2 per inch, EPS is an effective way to insulate a home. Expanded Polystyrene Insulation, more commonly referred to as EPS, is a closed cell insulation that has been around since the 1950’s. The choice of a recycling method is based on technical, environmental and economic considerations. The liquid formed is then continuously extruded … on The New UltraBoard Barrier X – A Closer Look, on COVID-19 Preventative Barrier Aid Types | UltraBoard Barriers Overview, on COVID-19 Protective Shields – UltraBoard Releases COVID-19 Protective Barriers, on Foamboard Suppliers – Tips to Find a Foamboard Sign Supplier, on Coronavirus (Covid-19) – How Sign Companies Can Help. Australian-made extruded polystyrene sheets (XPS) are strong and durable, making it an ideal product for use across a range of construction and building applications and wall cladding insulation for … This website uses cookies to improve your experience. Extruded polystyrene … EPS is made from expandable grade polystyrene. Thermaboards (PTY) Ltd is a national supplier of Extruded Polystyrene (XPS) and Expanded Polystyrene (EPS) rigid boards are used for thermal insulation. The main difference between these two materials lies in their density. Answer: Widely reported research by Dow Chemical Co. shows that their extruded polystyrene foam insulation, on average, outperforms expanded polystyrene (EPS) in below-grade insulation applications. First, you need to know the materials. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Expanded foam (EPS) is a less expensive option, and considered better for the environment, but you would need to use high-density Type II … Within a short time, Forma became a market leader in Expanded Polystyrene products through its focus on product innovation, good customer service, and expanded capacity. Polystyrene itself is a form of plastic, a polymer that can be extruded (think Styrofoam®) or expanded. Expanded (EPS) and extruded polystyrene (XPS) are both made from polystyrene, but EPS is composed of small plastic beads that are fused together and XPS begins as a molten material that is pressed out of a form into sheets. The extruded foam then cools and expands into it’s final shape. Since 1985, Isolite has been manufacturing expanded polystyrene. Extruded polystyrene (XPS) and expanded polystyrene (EPS), a comparison of the manufacturing process and the performance. EPS (expanded) and XPS (extruded) are both closed-cell rigid insulation made from the same base polystyrene resins and manufactured differently, EPS is beads that are molded or cut into various sizes … But through many years, we have been asked: what is the difference between EPS and XPS? Molded Pulp vs. Polyurethane has been developed to alleviate the shortfalls of EPS. 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