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Construction Uses of Perlite
Perlite has been used for years as
an aggregate in lightweight, insulating concrete and plaster, and as a loose fill
insulation material for concrete masonry blocks, cavity walls, and in residential homes.
It is also are used in a variety of specialty applications ranging from fireproofing
sprays, chimney fills, interstitial floors, acoustical sprays, etc.
Perlite is used as loose-fill insulation in the construction of modern, insulated masonry wall systems. And not only do they significantly increase the tested "R" values of these walls, they also can help change the fire rating of many walls from a basic 2-hour fire rating to a 4-hour rating.
Comparison of Perlite Loose-Fill to EPS Inserts and EPS Beads
Perlite Block and Cavity Fill
R-Values and U-Values for Concrete Blocks w/Perlite Block Fill
Shifting Peak Energy Loads with Concrete Masonry Construction
Fire-Proofing and Fire-Protection with Perlite Products
For decades, perlite has been used in fire-proofing and fire-protection. Most of these products are patented and sell under brandnames, but this page gives a basic outline of why and where these two lightweight, fire-proof aggregates are used.
Under Floor Sound and Thermal Insulation
In Germany, Denmark, and the Netherlands, perlite loose fill is used on new and existing floors for both accoustical insulation and thermal insulation. Sometimes called a "floating floor," these floor systems are used extensively in these Northern European countries, but not yet in America.
Underfloor Accoustical Insulation
Information given herein is from sources considered
reliable, but no guarantee of accuracy can be made or liability assumed. Your
supplier may be able to provide you with more precise data. Certain compositions or
processes involving perlite may be the subject of patents.