Extruded polystyrene (XPS) foam is a rigid insulation that’s also formed with polystyrene polymer, but manufactured using an extrusion process, and is often manufactured with a distinctive color to identify product brand.
Is XPS foam the same as Styrofoam?
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 and shapes while XPS is extruded sheets. …
What is the difference between EPS and XPS insulation?
XPS is manufactured in a continuous extrusion process that produces a closed cell form of foam insulation. EPS, on the other hand, is manufactured by expanding spherical beads in a mold and then using heat and pressure to fuse the beads together. Each product has proponents claiming one out performs the other.
Does XPS insulation need a vapor barrier?
XPS is manufactured in both an unfaced form or with different plastic facings. However, XPS is considered a vapor retarder, not a vapor barrier. Innovative applications of EPS and XPS have improved a building’s envelope thermal performance.
How thick is XPS insulation?
This bulletin provides thermal conductivity, thermal resistance, density and compressive strength for FOAMULAR® 150, 250, 400, 600 and 1000 insulation in thicknesses of 2″, 3″ and 4″.
Is EPS and XPS the same?
Extruded polystyrene insulation (XPS) is manufactured using a process of extrusion. Expanded Polystyrene insulation (EPS) is manufactured using beads of foam within a mould, heat or steam is then applied directly to the beads which causes them to expand and fuse together.
How long does XPS insulation last?
A time period appropriate for building application is 50 years.
Is XPS foam structural?
XPS foam has a tightly packed closed-cell structure that makes it extremely rigid and strong, making it ideal for structural panels.
Does XPS lose R-value?
The trapped gases in the cells of polyiso and XPS foam assist to provide an initial high R-value. During the life of these foams, air from the atmosphere diffuses in and the trapped gases diffuse out. The result is polyiso and XPS lose R-value over their lifetime.
Do you need house wrap over foam board?
The answer, happily, is yes. In fact, the two products combined make your home super-insulated from outside wind and weather. If you choose to install house wrap with rigid foam, generally, it should go under the insulation, not around it.
Does XPS melt?
XPS insulation meets its melting point typically between 200 degrees and 210 degrees Fahrenheit.
Which rigid insulation should I Choose?
Expanded polystyrene (EPS). EPS is the insulation used most widely in insulated concrete forms and structural insulated…
How much does rigid insulation cost?
ISO is available in a range of thicknesses, that come in increments of 1 inch. The thinnest board is 1 inch. This size rigid insulation r-value is 6 and costs $55 per 100 sq.ft..
What is the best insulation board?
Extruded polystyrene (XPS), also known as blueboard, acts as the best insulating foam board for below-grade applications, according to the U.S. Green Building Council. XPS offers greater moisture resistance than EPS, without the need for special films or coating to fend off moisture.
What is extruded polystyrene (XPS)?
Extruded Polystyrene – XPS. Generally,polystyrene is a synthetic aromatic polymer made from the monomer styrene,which is derived from benzene and ethylene,both petroleum products.
