Molded Polystyrene Board Insulation

Polystyrene insulation is manufactured in a variety of board sizes usually a minimum of 1 inch thick.

Molded polystyrene board insulation.

Published by astm international 100 barr harbor drive po box c700 west conshohocken pa 19428 2959 2. Resistant xps insulation astm c 578 type iv 25 psi minimum description owens corning foamular 250 extruded polystyrene xps insulation is a closed cell moisture resistant rigid foam board well suited to meet the needs for a wide variety of building applications. Excavated after 15 years as a below grade foundation insulation the molded polystyrene had retained 94 of its published r value and contained only 4 8 moisture content. Polystyrene resin beads or granules in a mold.

Csl and is the nation s largest manufacturer of block molded expanded polystyrene eps. Class b insulation board shall be formed by the expansion of poly styrene base resin in an extrusion pro cess. The r value at the time of excavation showed that molded polystyrene is less affected bymoisture content than xps. Eps is made of 98 trapped air and only 2 plastic making it an efficient insulator with a small amount of raw material.

Owens corning foam insulation llc one owens. Insulfoam is a division of carlisle construction materials a wholly owned subsidiary of carlisle companies nyse. Astm c578 10 standard specifi cation for rigid cellular polystyrene thermal insulation. Xps is extruded polystyrene.

Eps is expanded polystyrene also known as molded polystyrene. Molded polystyrene is a thermoplastic closed cell lightweight rigid foam plastic. The low thermal conductivity high compressive strength and excellent shock absorption properties of polystyrene make it an ideal material for residential and commmercial building insulation shipping and packaging material and to shape foundry patterns for metal casting. Expanded polystyrene insulation more commonly referred to as eps is a closed cell insulation that has been around since the 1950 s.

Foamular 250 xps insulation is ideal for many residential and commercial. Products manufactured to this specification are intended for use as thermal insulation for temperatures from 65 to 165 f 53 9 to 73 9 c. Tapered units are also manufactured for use in roofing assemblies where the insulation is used to create slope for positive drainage. For over 50 years insulfoam has been enabling building professionals to construct high quality building insulation systems at a minimal cost.

1 1 this specification 2 covers 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.