Plan and Install
Enerflex® Radiant Barrier comes in flat panels and rolls to meet your specific needs. Refer to the table to determine which products are right for your project. You can also use our Enerflex Radiant Barrier materials calculator to quickly estimate the number of Enerflex Radiant Barrier panels you will need for your project.
Installation Option 1 (Panels):
Downloadable PDF of Panel Installation
Installing panels between the rafters
The amount of Enerflex Radiant Barrier needed is equal to the area of your "roof" — not just the area of your home. You will need to measure the pitch of your roof to find the area. The following diagram describes how to take the measurement. To estimate the “roof” area, think of your home as a basic square or rectangle.
Determine the amount of Enerflex Radiant Barrier panels needed
Installation Option 2 (Rolls):
Downloadable PDF of Roll Installation
Stapling to underside of rafters
If you intend to staple the radiant barrier to the underside of the roof rafters, you need to know the roof area square footage, calculated as follows:
- Multiply the length and width of the attic to find the footprint square footage.
- Based on the pitch of your roof, multiply the footprint square footage by the appropriate factor listed in
table 1.
The resulting number is the roof area square footage. You should purchase enough material to cover this square footage amount, keeping in mind that each radiant barrier piece is to be overlapped by 1-2 inches.
Note: If you have a gambrel or hip roof, you will need to measure each section separately using this technique, and add the amounts to get the total roof area square footage. If you intend to cover the gable ends as well (recommended), don’t forget to include those in your calculations.
Laying radiant barrier over an attic floor is not recommended because it is susceptible to dust accumulation which will cause loss of performance over time.
