In 2015, The United States experienced 113,500 nonresidential structure fires (the latest year for which data on this are available), resulting in 80 civilian deaths and $3.1 billion in property damage.
As monolithic wall units with continuous insulation and fewer gaps to seal than stick-built framing, structural insulated panels (SIPs) are airtight and effective at stopping airborne ambient noise. However, the panels themselves are less effective at blocking low-frequency sounds.
Plastic foams for thermal insulation have been available for more than 70 years. Extruded polystyrene (XPS) was introduced in 1943, followed by expanded polystyrene (EPS) in 1950, and polyisocyanurate (polyiso) in 1954.
The April 2015 issue featured an article entitled “Selecting Polystyrene Foam Where Moisture Exposure Occurs.” The public relations manager at the EPS Industry Alliance wrote to the magazine, wanting to comment on what he called “several inaccuracies and omissions” he felt slanted the piece in favor of extruded polystyrene (XPS) at the expense of expanded polystyrene (EPS).
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