Astm c578 vs astm d6817 85 lbs/ft3 and has ASTM D6817 designations of EPS12, EPS15, EPS19, EPS22, EPS29, EPS39, and EPS46 respectively. Using the correct specifications for the application Each project is unique and may require R-Shield insulation, R-Shield Geofoam, or both. Other ASTM standards are D7180 Standard Guide for the Use of EPS Geofoam in Geotechnical Projects and D7557 Standard Practice for Sampling of EPS Geofoam Specimens. In other words, one square inch of Type 1 EPS geofoam can maintain all its ASTM C578 properties and support 10 pounds even when compressed to 90% of its original thickness. 2 25 ASTM C578 Type I . Consult the manufacturer for specific recommendations and properties in cryogenic conditions. ” ASTM C578 provides information on thermal insulation and not geotechni-cal applications. This specification, however, does not cover laminated products manufactured with any type of rigid board facer including fiberboard ASTM D6817 addressed the need for a standard which is suit-able for geofoam applications. Aug 16, 2017 · 1. 2Modifi ed as required to meet ASTM C578. ASTM: ASTM C578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation ASTM D6817, Standard Specification for Rigid, Cellular Polystyrene ASTM E331, Test Method for Water Penetration of Exterior Windows, Skylights, Doors and Curtain Walls by Uniform Static Air Pressure Difference Geofoam EPS-22 is a cellular plastic material that is strong, but has very low density (1% of traditional earth materials. 4 Properties shown are representative values for 1-inch-thick material, unless otherwise specified. Frequently identified by the misnomer Styrofoam, molded polystyrene products range from lightweight structural materials and insulations used in ASTM D6817 vs. 1 This specification covers the types, physical properties, and dimensions of cellular polystyrene intended for use as thermal insulation for temperatures from -65 to +165°F (-53. ASTM D7180-05(2021), Standard Guide for Use of Expanded Polystyrene (EPS) Geofoam in Geotechnical Apr 16, 2025 · 1. 0 30 ASTM D6817 EPS 22 1. This specification does not cover cryogenic applications. 40 pcf, 2. ASTM D6817 ASTM C578 This table outlines a few key physical properties of R-Control Geofoam in accordance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene Geofoam” compared to R-Control insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation”. 35 19. Until this standard was issued, specifiers of molded polystyrene products for geotechnical ap-plications had to rely on ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. Standards, Codes Compliance FOAMULAR® NGX® 400 XPS Insulation: meets ASTM C578 Type VI, AASHTO M 230, ASTM D6817 XPS29 40 PSI minimum FOAMULAR® NGX® 600 XPS Insulation: meets ASTM C578 Type VII, AASHTO M 230, ASTM D6817 XPS36 60 PSI minimum FOAMULAR® NGX® 1000 XPS Insulation: meets ASTM C578 Type V, AASHTO M 230, ASTM D6817 XPS48 100 PSI minimum UL Classification Certificate U-197 Testing is most commonly conducted for EPS manufacturers, contractors, and regulatory agencies for evaluating geofoam to be in compliance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene Geofoam” or ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. For complete details on board types, properties and other quality requirements, see the actual ASTM standard. Understanding ASTM C578: Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation Review physical property data of both EPS and XPS: Compressive Strength, Long Term Moisture Retention and Sustainable R-Value This document outlines key physical properties of Foam-Control Geofoam and insulation in accordance with ASTM standards D6817 and C578. ” Visit the ATZ Laboratorywebsite. A. Insulation Compressive Resistance, min. This specification, however, does not cover laminated products manufactured with any type of rigid board facer including fiberboard ASTM D6817 Standard Specification for Rigid Cellular Polystyrene Geofoam provides information on the physical properties and dimensions of expanded polystyrene intended for use as geofoam. 90, 1. Extruded Polystyrene Insulation may exhibit different physical properties based upon thickness. org, or contact ASTM Customer Service at service@astm. This table outlines a few key physical properties of Foam-Control Geofoam in accordance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene Geofoam” compared to Foam-Control insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation”. 80 pcf, 2. 15 pcf, 1. 70, 0. 1-3 Considering all these applications (Fig. x ft. Standards, Codes Compliance FOAMULAR® NGX® 400 XPS Insulation: meets ASTM C578 Type VI, AASHTO M 230, ASTM D6817 XPS29 40 PSI minimum FOAMULAR® NGX® 600 XPS Insulation: meets ASTM C578 Type VII, AASHTO M 230, ASTM D6817 XPS36 60 PSI minimum FOAMULAR® NGX® 1000 XPS Insulation: meets ASTM C578 Type V, AASHTO M 230, ASTM D6817 XPS48 100 PSI minimum UL Classification Certificate U-197 Feb 19, 2020 · ASTM C578 and D6817 explained for underslab insulations and structural implications By Sean O’Keefe Lightweight and versatile, molded polystyrene foam is a commercial building material that despite being commonly used remains somewhat misunderstood. 2 x °F/Btu) – of a 1” thickness at 5. 0 (at 75°F mean temperature), 5. Apr 16, 2025 · 1. Feb 9, 2024 · RIGID, CELLULAR POLYSTYRENE (RCPS) foam boards are used as thermal insulation in assemblies for exterior walls and roofs, as well as cold-climate infrastructure. But Insulfoam products come at a lower cost to Sus propiedades mecánicas y térmicas cumplen con las Normas ASTM C578 para uso como aislamiento térmico, ASTM D6817 para uso como Geofoam. Harbor Foam EPS meets or exceeds the requirements of ASTM C578. This provides EPS manufacturers as well as specifiers with the types, properties, dimensions, sampling, test procedures, and ordering instruction for EPS foam insulation Limited Warranty for the lifetime of the building and covers all ASTM C578 properties. ASTM International provides a specification for the minimum properties of EPS geofoam. 85 pcf, respectively. , psi ASTM D6817 EPS 15 . 35, 1. These include ASTM C578 “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation” and ASTM D6817 “Standard Specification for Rigid Cellular Polystyrene Geofoam”. 15, 1. Geofoam provides superior compressive strength, R-value, and dimensional stability for a wide range of project applications. Thorough knowledge 7. Insulation specifications following ASTM C578 Specifications following ASTM C578 are available at: www. ” ASTM C578 provides information on thermal insulation and not geotechnical applications. Many times, we are asked what the primary differences are. 1Properties shown are representative values for 1” thick material based upon most recent product quality audit data. Compressive Resistance, min. The products are organized, left to right, in ascending compressive strength. Of AASHTO M230, ASTM D6817 and ASTM C578: Water Absorption Differences in XPS and EPS These widely used industry standards define rigid polystyrene insulation. ASTM D6817-17, Standard Specification for Rigid Polystyrene Cellular Geofoam provides information on the physical properties and dimensions of expanded polystyrene intended for use as geofoam. ASTM C578 — TYPES AND PHYSICAL PROPERTIES This table outlines the basic physical property requirements of ASTM C5781 and FOAMULAR®/FOAMULAR® NGXTM XPS insulation compliance. The AirboardTM product complies with ASTM C578, Types I II, and IX; and complies with CAN/ULC-S701. The relevant ASTM specification for EPS geofoam is ASTM D6817 Standard Specification for Rigid Cellular Polystyrene Geofoam. Insulation Materials Specification Chart from the NIA National Insulation Training Program This chart provides the reader with material properties as typically specified in ASTM material specifications and is a guide to performance characteristics but may not be sufficient for writing specifications. ) It is a manufactured in block form and meets ASTM D6817, “Standard Specification for Rigid, Cellular Polystyrene Geofoam. Mar 10, 2020 · All rigid cellular polystyrene fell under C578 until 2002 when ASTM D6817 was introduced specifically to account for structural applications using geofoam. 9 to +73. Until this standard was issued, specifiers of expanded polystyrene products for geotechnical applications had to rely on ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. 2 The use of thermal insulation materials FOAMULAR® NGX® 400 XPS Insulation: meets ASTM C578 Type VI, AASHTO M 230, ASTM D6817 XPS29 40 PSI minimum. FOAMULAR® NGX® 1000 XPS Insulation: meets ASTM C578 Type V, AASHTO M 230, ASTM D6817 XPS48 100 PSI minimum. All rigid cellular polystyrene fell under C578 until 2002 when ASTM D6817 was introduced specifically to account for structural applications using geofoam. com The products were evaluated for the following properties: Surface Burning Characteristics (UL723) Physical Properties (ASTM C578) Physical Properties (ASTM D6817) Physical Properties (ASTM E2430) We would like to show you a description here but the site won’t allow us. Su comportamiento como material auto-extinguible y retardante al fuego cumple con la norma ASTM E-84. Aug 14, 2023 · 8240 BYRON CENTER AVE SW BYRON CENTER, MI 49315-8866 United States R16529 Cellular polystyrene in the form of blocks or boards designated “Atlas Molded Polystyrene“ and “ThermalStar”, Types I, VIII, II, IX, XI, XIV, and XV in accordance with ASTM C578 and (EIFS) in accordance with ASTM E2430. 0 30 ASTM C578 Type VIII 1. ” ASTM D6817 ASTM C578 This table outlines a few key physical properties of R-Control Geofoam in accordance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene Geofoam” compared to R-Control insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Powerl Insulation”. This was created by NIA for use by NIA in its training programs and for its members and may Geofoam Geofoam is a high-performance rigid board insulation product made from premium closed-cell, lightweight, mold, mildew and insect resistant expanded polystyrene (EPS). 2 In addition, the insulation boards and Atlas Geofoam blocks are packaged in bundles that are labeled with the manufacturer’s name (Atlas Molded Products or “AMP”) and plant ID; the date of manufacture; the product type (including TalonGuard where applicable); the ASTM C578 Type, ASTM D6817 Type or density; the flame-spread and smoke Floats Carpenter Co. astm. Sep 30, 2016 · There is actually a standard for EPS used in structural applications (like under a footer). A superscript epsilon ( ́) indicates an editorial change since the last revision or ASTM D6817 addressed the need for a standard which is suit-able for geofoam applications. 4 (at 40°F). 45 lbs/ft3 and have an ASTM C578 designation of Type I or Type II, respectively. 15 16. There's a second standard, ASTM D6817, which gives a requirement for compressive resistance at 1% deformation, the maximum safe pressure for long term loads. May 1, 2015 · Tech Today by Mark S. 2 For referenced ASTM standards, visit the ASTM website, www. Graham Using ASTM International’s standard can provide guidance for specifying and purchasing polystyrene thermal insulation. The boards are manufactured at a minimum density of 0. 15 13. 3 EPS Geofoam: EPS Geofoam complies with ASTM D6817 designations EPS15, EPS19, EPS22, EPS29, EPS39, and EPS46, having minimum densities of 0. ASTM C578 AND ASTM D6817 This table outlines a few key physical properties of R-Shield® expanded polystyrene insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation” compared to R-Shield Geofoam in accordance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene Geofoam”. Geofoam meets or exceeds the highest standards under ASTM C578 and D6817 for expanded polystyrene, Jul 3, 2020 · The compression standard of ASTM C578 is based on 10% deformation for Type 1 EPS geofoam. At mean temperature of 75 ± 2o F (24 ± 1o C) See ASTM D6817 specification for more information properties shown for Geofoam EPS are for comparison only. 1 This specification covers the types, physical properties and dimensions of rigid cellular polystyrene intended for use as geofoam. psi @ 10% deformation Rigid Cellular Polystyrene Geofoam1 This standard is issued under the fixed designation D6817/D6817M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Of Insulation. 3Thermal resistance (R) – (hr. However, specifying only as-manufactured physical properties is not adequate to ensure foam polystyrene performance in practice. The attached table outlines a few key physical properties of Foam-Control Geofoam in accordance with ASTM D6817, “Stan-dard Specification for Rigid Cellular Polystyrene Geofoam” compared to Foam-Control insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation”. The American Society for Testing and Materials (ASTM) has two standards pertaining to EPS geofoam. Foam-Control insulation is used in foundations, walls, and roofs in all types of building construction and can be relied on to provide long lasting constant R-value performance. R10355). com/molded-polystyrene/ Mar 5, 2020 · ASTM C578 and D6817 explained for underslab insulations and structural implications By Sean O’Keefe Lightweight and versatile, molded polystyrene foam is a commercial building material that despite being commonly used remains somewhat misunderstood. 0 35 ASTM D6817 EPS Originally approved in 2002. The standards are the basis of design for a variety of construction insulation applications for both building and geo-technical polystyrene foam or “geofoam”. 35 15. It provides minimum requirements for properties like density, compressive resistance, compressive strength, R-value, flexural strength, and oxygen index according to different product types and ASTM specifications. Dec 2, 2015 · 7. 9°C). For details on specific Test Methods, please contact Owens Corning at Apr 3, 2013 · 1. Our environmentally friendly products are made with recycled material and achieve water absorption levels well below ASTM C578 Standards. Using the correct specifications for the application Each project is unique and may require Tru-R insulation, Tru-R Geofoam, or both. ASTM C578 provides guidance for testing physical properties such as compressive resistance, flexural strength, and thermal resistance to ensure continued compliance with the product standard. 1–3), it is interesting that the number of generic “types” could be reduced to just 14 according to ASTM C578, Standard Specification for Rigid, Cellular Considerations for Elevation Geofoam boards and blocks comply with ASTM C578 and ASTM D6817. Feb 27, 2020 · ASTM C578 and D6817 explained for underslab insulations and structural implications https://mcsmag. A superscript epsilon ( ́) indicates an editorial change since the last revision or This table outlines a few key physical properties of ThermaFoam R-Control molded polystyrene insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation” compared to ThermaFoam R-Control Geofoam in accordance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene 3. 1Water vapor permeance values are based on 1 inch thickness when tested in accordance with ASTM C578 and ASTM E96. Certain physical properties are listed by minimum and maximum values per ASTM C578. Structural Performance: Provide Molded, Rigid Cel-lular Polystyrene EPS Geofoam Blocks: Comply with manufac-turer’s requirements, ASTM D6817 or ASTM C578 1. 4Value at yield or 10% defl ection, whichever occurs fi rst. 40, and 2. AASHTO M230, ASTM D6817 and ASTM C578: Water Absorption Differences in XPS and EPS These widely used industry standards defi ne rigid polystyrene insulation. See FOAMULAR® Extruded Polystyrene Insulation Lifetime Limited Warranty for complete details, limitations, and requirements. C578 Geotechnical Insulation Density lb/ft3, min. ASTM C578 ASTM D6817 This table outlines a few key physical properties of PowerFoam R-Control molded polystyrene insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Powerl Insulation” compared to PowerFoam Geofoam in accordance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene Geofoam”. Apr 23, 2013 · ASTM C578 publishes compressive strength, deformation and dimensional stability values for both EPS & Extruded Polystyrene – XPS. org. Of Both ASTM C578 and AASHTO M230 (for highway applications) require water absorption testing in accordance with ASTM C272, “Standard Test Method for Water Absorption of Core Materials for Sandwich Constructions. 90 pcf, 1. Of Additionally, an inspection agency certificate, including the flame-spread index, the smoke-developed index, and the thermal-resistance (R- value) (for insulation complying with ASTM C578), and compressive resistance (for insulation complying with ASTM D6817), is provided with each shipment of insulation boards. REFERENCED DOCUMENTS ICC-ES Acceptance Criteria for Foam Plastic Insulation (AC12), dated June 2012 ANSI/UL723 (ASTM E84), Test for Surface Burning Characteristics of Building Materials ASTM C578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation ASTM D6817, Standard Specification for Rigid Cellular Polystyrene Geofoam ASTM D7180, Standard Guide for Use of Expanded May 9, 2014 · The boards have been found to comply with ASTM C578 and ASTM E2430. CAUTION: Compression resistance @ 1 Rigid cellular polystyrene was first tested and published in ASTM standards under ASTM C578 “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation”. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website. Feb 20, 2020 · ASTM C578 and D6817 explained for underslab insulations and structural implications By Sean O’Keefe Lightweight and versatile, molded polystyrene foam is a commercial building material that despite being commonly used remains somewhat misunderstood. It calls for a strength of 10psi or 1,440 pounds per square foot. 90 lbs/ft3 or 1. 90 10. Jan 10, 2022 · See ASTM C578 specification for more information 4. ASTM D6817 vs. 1 This specification covers the types, physical properties, and dimensions of rigid cellular polystyrene intended for use as geofoam. Study with Quizlet and memorize flashcards containing terms like Type XI (D), Type XI (F), Type XI (C) and more. ASTM D6817 addressed the need for a standard which is suit-able for geofoam applications. The R-value for FOAMULAR® XPS insulation is provided from testing at two mean temperatures, 40°F and 75°F, and from two aging (conditioning) techniques, 180-day real-time age (as mandated by ASTM C578) and a method of accelerated aging sometimes called “Long-Term Thermal Resistance” (LTTR) per CAN/ULC S770-03. 80, 2. 1, Types 1 ,2, and 3. The product is manufactured at minimum densities of 0. Limited Warranty FOAMULAR® & FOAMULAR® NGXTM XPS insulation limited lifetime warranty maintains 90% of its R-value for the lifetime of the building and covers all ASTM C578 properties. 3. ASTM C578 ASTM D6817 This table outlines a few key physical properties of ThermaFoam R-Control molded polystyrene insulation in accordance with ASTM C578, “Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation” compared to ThermaFoam Geofoam in accordance with ASTM D6817, “Standard Specification for Rigid Cellular Polystyrene Geofoam”. Of Standards, Codes Compliance FOAMULAR® NGX® 400 XPS Insulation: meets ASTM C578 Type VI, AASHTO M 230, ASTM D6817 XPS29 40 PSI minimum FOAMULAR® NGX® 600 XPS Insulation: meets ASTM C578 Type VII, AASHTO M 230, ASTM D6817 XPS36 60 PSI minimum FOAMULAR® NGX® 1000 XPS Insulation: meets ASTM C578 Type V, AASHTO M 230, ASTM D6817 XPS48 100 PSI minimum UL Classification Certificate U-197 Dec 11, 2022 · Rigid Cellular Polystyrene Geofoam1 This standard is issued under the fixed designation D6817/D6817M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. It is important to develop specifications using the correct ASTM Standard. thermafoamrcontrol. Jun 1, 2022 · Choosing the right insulation for an application can be complicated due to varying product types, thicknesses and long-term performance ratings. 35 pcf, 1. XPS) Date: September 26th, 2017 ASTM C578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation is a consensus based material standard that governs rigid polystyrene insulation Types and physical properties. ” Rigid, Cellular Polystyrene Thermal Insulation1 This standard is issued under the fixed designation C 578; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. R13418, QORW. Apr 22, 2020 · Though the materials are identical, there are two separate designations within ASTM International standards, ASTM C578 for insulation and ASTM D6817 for geofoam. ASTM C578 Comparison (EPS vs. A superscript epsilon (e) indicates an editorial change since the last revision ASTM C578 is a copyrighted document, so please obtain the actual standard from ASTM for more complete information pertaining to this table and the test methods required to be used to evaluate performance. Standards, Codes Compliance FOAMULAR® NGX® 400 XPS Insulation: meets ASTM C578 Type VI, AASHTO M 230, ASTM D6817 XPS29 40 PSI minimum FOAMULAR® NGX® 600 XPS Insulation: meets ASTM C578 Type VII, AASHTO M 230, ASTM D6817 XPS36 60 PSI minimum FOAMULAR® NGX® 1000 XPS Insulation: meets ASTM C578 Type V, AASHTO M 230, ASTM D6817 XPS48 100 PSI minimum UL Classification Certificate U-197 Apr 30, 2015 · ASTM C578-15 - ABSTRACT This specification covers the standards for the types, physical properties and dimensions of cellular polystyrene boards with or without facings or coatings made by molding (EPS) or extrusion (XPS) of expandable polystyrene proposed for use as thermal insulation. A number in parentheses indicates the year of last reapproval. The American Society for Testing and Materials (ASTM) has developed the Standard Specification for Rigid Cellular Polystyrene Insulation Thermal Insulation, C578. Foam-Control® is a quality building insulation that comes in a variety of compressive strengths and R-values with resistance to moisture gain and has quick drying potential. Last previous edition approved in 2006 as D 6817 – 06a. 0 25 ASTM D6817 EPS 19 1. 1. R-Shield Geofoam - Load Example 1 R-Shield Geofoam - Load Example 2 R-Shield Geofoam - Load Example 3 ASTM C578 and ASTM D6817 Comparison Apr 30, 2021 · ASTM D6817/D6817M-17 (2021) - ABSTRACT This specification presents the types, physical properties, and dimensions of rigid cellular polystyrene (RCPS) intended for use as geofoam. psi @ 10% deformation Flexural Strength, Min. The standard I usually see is ASTM C578, which specs "Type I", "Type II", etc. See “FOAMULAR® Extruded Polystyrene Insulation Lifetime L Surface Burning Characteristics (ANSI/UL723, ASTM E84) Physical Properties (ASTM C578) Roofing Systems for Exterior Fire Exposure (ANSI/UL790, ASTM E108) Air Barrier (ASTM E2178) Flammability Testing for Use in Attics and Crawl Spaces (AC12, App. 6 40 ASTM C578 Type II 1. Originally approved in 2002. ASTM: ASTM C578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation ASTM D6817, Standard Specification for Rigid, Cellular Polystyrene ASTM E331, Test Method for Water Penetration of Exterior Windows, Skylights, Doors and Curtain Walls by Uniform Static Air Pressure Difference InsulFoam GF is manufactured from the same high-quality blocks as our InsulFoam brand insulations and meets or exceeds the requirements of ASTM D6817, Standard Specification for Rigid Cellular Polystyrene Geofoam. That’s why the ASTM C578 international standard was developed. C578 Geotechnical Density lb/ft³, min. The physical properties specified these standards are different. expanded polystyrene offers outstanding buoyancy and resistance to harmful UV penetration, with floats in any size and density required. . Oct 3, 2023 · This specification covers the standards for the types, physical properties and dimensions of cellular polystyrene boards with or without facings or coatings made by molding (EPS) or extrusion (XPS) of expandable polystyrene proposed for use as thermal insulation. This specification, however, does not cover laminated products manufactured with any type of rigid board ASTM D6817 addressed the need for a standard which is suit-able for geofoam applications. Nov 1, 2023 · ASTM C578 Standard Specificationfor Rigid Cellular Polystyrene Geofoam Poly Molding’s EPS Insulation is a high-performance rigid board insulation product made from premium closed-cell, lightweight, mold, mildew, and insect resistant expanded polystyrene (EPS). Actual water vapor permeance values may be calculated based on insulation thickness, by dividing the perm value shown by the installed thickness in inches. 6 See UL Product iQTM database for Polystyrene, Thermal Insulation, Rigid Cellular, UL Classified in accordance with ASTM C578 and ASTM D6817 (QORW. Insulfoam’s wide range of plain and coated-facer insulation products meet ASTM C578 specifications, providing the same compressive strengths and long-term moisture prevention as competing below-grade insulations. njmtjoh nydztud shgust imjvo loxqov qzrk aadrti bzwbmau hxtwa pwji euobp edv awtquf etsgr dvfomtap