About
Who We Are
Rapid Insulation is a manufacturer of EPS (expanded polystyrene) foam.
Every product we sell is manufactured at our facility in American Fork, Utah.
Products
EPS Foam
Our EPS foam meets ASTM C578 and comes in seven types, from 0.75 to 3.00 lb/ft³ nominal density.
EPS Properties
ASTM C578| Type | Nominal densitylb/ft³ | Design R-valueper inch, 75°F | Compressive strengthpsi, min. @ 10% | Flexural strengthpsi, min. |
|---|---|---|---|---|
| Type XI | 0.75 | 3.2 | 5.0 | 10.0 |
| Type I | 1.00 | 3.9 | 10.0 | 25.0 |
| Type VIII | 1.25 | 3.9 | 13.0 | 30.0 |
| Type II | 1.50 | 4.2 | 15.0 | 35.0 |
| Type IX | 2.00 | 4.4 | 25.0 | 50.0 |
| Type XIV | 2.50 | 4.4 | 40.0 | 60.0 |
| Type XV | 3.00 | 4.5 | 60.0 | 75.0 |
Selected values. See the tech data sheet for metric units, R-values at 25°F and 40°F, water vapor permeance, water absorption and oxygen index, and the ASTM C578 standard for test methods.
Download Tech Data