Polystyrene Bead Insulation R Value

Loose fill polystyrene is a hazard.

Polystyrene bead insulation r value.

Expanded polystyrene made from expanded foam beads that are molded into shape expanded polystyrene or eps is ideal for above grade applications such as exterior walls and offers an r value of 3 6 to 4 2 per inch. Perlite and vermiculite granular fill offer an r value of up to 2 4 per inch according to the u s. Also called styrofoam insulation this is the least expensive material. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market.

Select 2 to 4 items to compare. Department of energy while inspectapedia reports the r value of polystyrene beads at 2 3 per inch. Expanded polystyrene insulation is similar to the foam used for packing peanuts and it s typically used for insulated concrete forms also knows as icf s. It provides r values that range from 3 6 to 4 2 per inch.

This product typically has an r value of 3 6 to 4 0 per inch of thickness. If the puffed beads fill the cavity the space can obtain r values close to that of fiberglass insulation. Recent concerns have been raised about the brominated flame retardant hbcd hexabromocyclododecane for the organic chemists among us see flame retardant used in polystyrene to be banned by eu that is found in all polystyrene insulation both extruded. In this application the puffed beads are poured into the wall cavity between the studs by drilling a hole in the top of the wall.

Each type comes with unique advantages. Another application in construction for polystyrene beads is retrofit insulation of un insulated exterior walls. Polyisocyanurate insulation materials polyisocyanurate or polyiso is a thermosetting type of plastic closed cell foam that contains a low conductivity hydrochlorofluorocarbon free gas in its cells. Insulation is a critical component of buildings.

Polystyrene loose fill or bead insulation typically has a lower r value compared to the foam board. Additional r value for a masonry wall constructed using these materials needs to add the insulating value of additional wall components typically included such as 1 solid foam polyisocyanurate r 8 extruded polystyrene r 5 expanded polystyrene r 4 or 1 of perlite r 2 7 and for an exterior air film winter no wind r 0 17 an interior. Garage door insulation spray foam insulation faced insulation soundproofing insulation insulation outdoor roof material high temp material.