Frequently Asked Questions
Attic energy barrier and insulation frequently asked questions.
| Q: Why don’t building codes specify E-values as well as R-values? |
| A: In the last century, the only cost-effective insulation for the home was mass insulation like fiberglass, cellulose and foam that reduced heat transfer by convection and conduction. The “R-value” was the measure of how good a job those insulators did. Yet R-value measures only the smallest part of residential heat transfer. E-value is the measure of emissivity, radiant heat transfer, the principle source of energy loss. New technologies make it practical to achieve extremely low emissivity in window glass and in a reflective film ideal for the attic. As these low-E technologies advance, the codes will catch up and E-value will replace R-value as the primary measure of energy efficiency. |
| Q: Will eShield™ installed in my attic trap mildew-causing moisture in my ceiling? |
| A: eShield™ is perforated to allow vapor to escape the housing envelope – it will not contribute to mildew growth in your home. |
| Q: Will eShield™ create a fire hazard in my attic? |
| A: eShield™ Attic Energy Barrier is fire-resistant – it’s less combustible than the structure to which it attaches. Of course, like almost any material, it will melt and eventually burn if exposed to an open flame. |
| Q: Can I get a rebate for installing eShield™? |
| A: eShield™ Attic Energy Barrier is Department of Energy approved and bears the Energystar® mark. This is the gold standard in energy efficiency and qualifies for most federal, state and energy company rebates. Check with your eShield™ rep to learn what’s available in your area. |
More about Attic energy Barrier
- Attic Energy Barrier
- Home Energy Loss
- The Science
- R-value VS. E-value
- eShield™ VS. Ordinary Insulation
- Installation Strategies
- Frequently Asked Questions
Department of Energy tests show that eShield™ attic energy barrier can deliver more energy savings than twelve inches of additional fiberglass insulation.