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The R-value of polyisocyanurate is R-5.7 to R-6 per inch (although cold-climate builders sometimes use a lower R-value because polyisocyanurate performs poorly at cold temperatures). Over a period of decades, the R-value of polyisocyanurate and XPS gradually declines. With increasing requirements in continuous insulation (c.i.), Architects, Designers and Specifiers are faced with making a choice: Polyisocyanurate (polyiso) or Extruded Polystyrene (XPS). Both of these foam plastic insulations are governed by Chapter 26 of the International Building Code (IBC), yet they are very different in their physical and thermal properties. Extruded Polystyrene (XPS) is a closed-cell commercial-grade insulation that features low thermal conductivity, high resistance to water penetration and high compressive strength. Learn More Finder What are the key features of XPS? Just like with EPS, energy efficiency is the primary feature of XPS insulation. Due to its physical properties, XPS has a higher r-value than EPS at 4.7 per inch.

Fiberglass? Rock wool? XPS? EPS? Polyiso? Spray foam?

You can get Oct 17, 2008 There are three types of rigid foam insulation: expanded polystyrene (EPS), extruded polystyrene (XPS) and polyisocyanurate (polyiso), each Jan 7, 2019 It is denser than EPS and provides more R-Value with a rating of 5 per inch of Polyiso comes in several thicknesses and is used over house Sep 12, 2016 EPS and XPS are thermoplastics, while Polyiso is a thermoset foam. For example, XPS foam board has a maximum shrinkage rate of two Nov 3, 2017 The Polyiso gives it up a bit to the XPS right at the 50 degree mark A good alternative is type 2 eps hs40 at r5/inch highly compressible and Sep 7, 2016 However after digging down the insulation rabbithole further, I've read that polyiso insulation performs poorly if it gets wet and that extruded (xps Extruded polystyrene, and Polyisocyanurate w/ foil face. Tribu built his Kubic camper using XPS polystyrene sandwiched between two thin Even EPS seems less water absorbent than XPS. Can't say the same about polyiso.

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(EPS) INSULATION COMPARISONS EXTRUDED POLYSTYRENE (XPS) POLYISOCYANURATE (Polyiso, ISO) 19727 57th Avenue East • Puyallup, WA 98387 insulfoam.com. Created Date: Expanded polystyrene, or XPS, extruded polystyrene, or EPS, and polyisocyanurate, or polyiso, are the three main types of rigid, closed-cell insulation materials. Each type is used in a variety of applications and under conditions where resistance to water and moisture is critical. Polyisocyanurate, also referred to as PIR, polyiso, or ISO, has the highest R-value of any rigid foam board insulation commercially available.It comes with a variety of backers (foil, fiberglass mat, vinyl, and paper), and is very similar to the polyurethane used by spray foam contractors.

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Polyisocyanurate is chemically related to polyurethane, a versatile plastic used for car parts, solid tires, pillows, paints, adhesives, sealants and many other uses. Polyiso is derived from isocyanate in a complex series of reactions. The R-value of XPS is R-5 per inch.

Polyiso is a thermoset material meaning it is permanently rigid and cannot be melted back to liquid form. Thermoset materials are generally stronger that thermoplastic due to the network of bonds and are better suited for high-temperature applications. 2019-08-30 · Rigid foam insulation comes in three common forms: expanded polystyrene (EPS), extruded polystyrene (XPS), and polyisocyanurate (PIR). Sharing the polystyrene surname, EPS and XPS are both manufactured from the petroleum-based resin, a thermoplastic based on non-cross-linked polymers. show that 2 inches of XPS is 21 percent more efficient than polyiso (1 inch of XPS is 12 percent more efficient than polyiso).
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EPS boards are for use as a Most of the time EPS and polyiso are about the same 8-10 cents per square foot (EPS) products - Specification. EN 13164:2012+A1:2015/A2, Thermal insulation products for buildings - Factory made extruded polystyrene foam (XPS) Gasformig Förhoppningsvis formell China PU EPS XPS PUR PIR Structural gränd Polis annan QWIK GUIDE: Polyisocyanurate vs Extruded Polystyrene · Virus och inkommande laster - polystyren, enkel (PSB-S, EPS) eller extruderad (XPS).

Both EPS and XPS come in compressive strength levels ranging between 10 and 60 psi. XPS also comes in 100 psi options. XPS and EPS are two popular insulation materials, each with their specific qualities. This article provides an overview of the differences between both materials, enabling you to select the best type of insulation material for your project.
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eps vs xps insulation

Expanded polystyrene, or XPS, extruded polystyrene, or EPS, and polyisocyanurate, or polyiso, are the three main types of rigid, closed-cell insulation materials.