It's rigid packaging foam, great for computers and sensitive devices.
The cost of Ethafoam can vary widely based on factors such as thickness, density, and supplier. Generally, prices can range from a few dollars to over $20 per sheet, depending on the specifications. For bulk purchases or specific custom sizes, costs may differ. It's best to check with specific suppliers for accurate pricing based on your needs.
Ethafoam 220 is not typically used as insulation for ceilings, as it has a lower R-value compared to traditional insulation materials like fiberglass or foam board. While it does provide some thermal resistance and can help with sound attenuation, its primary applications are more suited for packaging and cushioning rather than thermal insulation. For ceiling insulation, materials specifically designed for that purpose would be more effective.