High Compressive Strength Foam Insulation

Compressive stress when the compressive strength is not reached the point at which the load stress causes a 10 relative deformation of the insulation.

High compressive strength foam insulation.

The most important mechanical property of eps insulation and building products is its resistance to compressive stresses which increase as the density becomes higher. When identifying the compressive capabilities of an insulation material it undergoes two tests. They have a tensile strength of 65 75 psi compressive strength of 45 55 psi and r value of 6 9 per inch. 2 5 2 8 and 3 0 and are class i fire rated.

The product needs to offer sufficient compressive strength for the intended application and also be capable of withstanding any demands placed on it during installation. Short term testing compressive behaviour bs en 826 2013 and. The mechanical strength of eps varies with its density. It is comprised of an extruded polystyrene closed cell foam panel with continuous skin.

The compressive strength of the chosen thermal insulation should be enough to bear both dead and active loads imposed by the flat roof and its use. Target an appropriate compressive strength one of the best ways to save money on rigid foam insulation installed under concrete slabs is to ensure the material is not over engineered. Astm c578 types and physical properties for foamular xps 106 kb pdf foamular extruded polystyrene insulation for cold storage applications technical guide 884 kb pdf. High performance under high loads get the muscle to meet the high load applications and the insulative strength to work in low temperature applications.

Duratite roof foams come in three different densities. A common type of xps such as dow s styrofoam or foamular from owens corning and type ix eps is rated for 25 psi. All types of high strength construction applications the boards are lightweight durable and impact resistant which helps to reduce job site damage foam insulation can be scored and fabricated easily with common hand tools. Foamular 400 600 1000 high compressive strength rigid foam insulation product data sheet 467 kb pdf technical bulletins.

If you need something with higher compressive strength xps with a psi rating of 40 60 and even 100 is available. The other consideration for sub slab use is the foam s compressive strength. Required properties for celfort and foamular extruded polystyrene insulation. A common design assumption leads to specification of rigid foam strengths that are many orders of magnitude higher than necessary which can double the insulation.