What is the R-value of 1 inch Styrofoam?

5.0 per inch
Resistance to the flow of heat is measured in “R-value”, the higher the R-value, the harder it is for heat to get through. STYROFOAM extruded polystyrene insulation is rated at an R-value of 5.0 per inch at 75°F.

What is the R-value per inch of extruded polystyrene?

Extruded Polystyrene Foam This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. XPS has an R value of 4.5 to 5.0 per inch of thickness.

What is the difference between pink and blue foam board?

Brand Names. Both pink and blue foam boards are rigid insulation panels made from extruded polystyrene. The chemical composition, manufacturing process and insulating capability of the two products are similar; the principal difference between them is that they are manufactured by two different companies.

Is Expanded polystyrene open or closed cell?

What is EPS? Expanded Polystyrene Insulation, more commonly referred to as EPS, is a closed cell insulation that has been around since the 1950’s. EPS is made of 98% trapped air and only 2% plastic, making it an efficient insulator with a small amount of raw material.

Is XPS same as EPS?

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.

Is XPS toxic?

Most rigid polystyrene foam insulation boards, both the EPS and XPS types, contain the toxic flame retardant HBCD, which was banned by the European Union in 2015. In addition to containing dangerous flame retardants, this type of insulation is made from petroleum chemicals.

Can I paint extruded polystyrene?

You can paint polystyrene foam or expanded polystyrene beads using a waterborne paint to protect it from solvent attack by subsequent coats of paint. After the polystyrene is completely covered, you can over-coat it using a conventional paint, if need be.

What is polystyrene foam board?

Polystyrene board is a rigid foam material made from polystyrene beads. Styrene, a petroleum by-product, is the principle component of polystyrene. It is available in various densities and has multiple applications in home, commercial, and industrial markets. It is commonly used as insulation.

What are polystyrene panels?

Polystyrene foams are 95-98% air. Polystyrene foams are good thermal insulators and are therefore often used as building insulation materials, such as in insulating concrete forms and structural insulated panel building systems. Grey polystyrene foam, incorporating graphite has superior insulation properties.

What is a polystyrene sheet?

Polystyrene sheets are thin layers of material made from polystyrene foam. These sheets are often referred to as Styrofoam ® sheets after a popular brand name product made from this material.