Installation Guide

No tools are required for most installations
Additional items recommended:
• Utility knife
• Broom – Use to move insulation around the eaves
or to fluff up packed down insulation
• Tape measure
• Staple gun with 1/2" staples
• Metalized tape
• 4'x4' piece of plywood to lay across the rafters as
a working platform
• Ladder
• Dust mask, safety goggles and gloves
To get the best performance it is essential that this radiant barrier
be installed properly. If you do it yourself, follow the instructions
carefully. Avoid contact of Enerflex™ with electrical wiring.
Plan
ahead for adequate ventilation and lighting. Attic temperatures will
likely be higher than the living areas of your home and can be upwards
of 160°F. Take precautions to avoid risks associated with prolonged
exposure to heat. Always wear a dust mask to avoid inhaling disturbed
dust and insulation particles that can accumulate in attics. Work with
a partner whenever possible. Step with care and be aware of your
surroundings.
Inspect the space between rafters prior to installation as truss cross
members, electrical wiring, HVAC equipment and other conditions
can influence the installation method for each panel.
Overlap: Enerflex panels can
be overlapped at the top or
bottom edge. Overlapping is
the recommended method for
multiple panel installation (fig. 1).
End-to-end: Place Enerflex panels
end-to-end with no overlap (fig. 2).
The installer may need to use a
combination of methods
depending on individual
rafter and roof
configurations, HVAC
equipment, hanging
straps, pipes, etc.
Things to consider
• For best results, cover all gable end walls and other vertical surfaces
in the attic, in addition to the underside of the roof sheathing. We
recommend using Enerflex roll on the vertical surfaces of your attic.
• Provide a minimum free ventilation area of not less than one
square foot of vent area for each 150 square feet of attic floor area.
• Provide no less than 30% upper vents. Ridge vents or gable end
vents are recommended to achieve the best performance.
Never cover any vents with Enerflex Radiant Barrier.
• Leave a minimum gap of 3.5” between the top of the roof decking
and the radiant barrier backboard (fig. 3).
• Leave a minimum of six (6) inches at the roof peak to allow hot
air to escape from the baffle space between the roof decking and
the radiant barrier.
Installing an Enerflex panel
Two simple steps:
Step 1
• Insert the edge of one side of the
Enerflex panel against the inside of
the first rafter where it meets the
roof sheathing (fig. 4).
Step 2
• With the inserted edge secured
against the intersection of the rafter
and the roof sheathing, manually flex
the Enerflex panel, creating a bow
that allows the opposite panel edge
to be inserted at the intersection
of the roof sheathing and adjacent
rafter (fig. 5).
As needed, cut Enerflex to fit around HVAC and other utility
obstructions. Seal the cuts with metalized tape (fig. 6 and fig. 7).
Enerflex panels are designed for rafter spacing of 16" on-center or
24" on-center. Where rafter spacing is inconsistent, panels may need
to be stapled into place. Staple panels to the underside of the rafters
using 1/2" staples every four to six inches.
Alternative installation method
• Enerflex can be stapled to the underside of the rafters
using 1/2" staples spaced every four to six inches.
** Do not lay Enerflex on the attic floor on top of existing attic insulation. This
application is susceptible to dust accumulation, which will cause loss of performance
over time.
The diagrams and instructions in this brochure are for illustration purposes only
and are not meant to replace a licensed professional. Any construction or use of
the product must be in accordance with all local zoning and/or building codes. The
consumer assumes all risks and liability associated with the construction or use of this
product. The consumer or contractor should take all necessary steps to ensure the
safety of everyone involved in the project, including, but not limited to, wearing the
appropriate safety equipment. EXCEPT AS CONTAINED IN THE WRITTEN
LIMITED WARRANTY, THE WARRANTOR DOES NOT PROVIDE ANY
OTHER WARRANTY, EITHER EXPRESS OR IMPLIED, AND SHALL
NOT BE LIABLE FOR ANY DAMAGES, INCLUDING CONSEQUENTIAL
DAMAGES.
©2009, 2010 Universal Forest Products. All rights reserved. Enerflex is a trademark
of Universal Forest Products, Inc., in the U.S. Grand Rapids, MI 49525 5582 3/10
fig. 1
fig. 2
fig. 4
fig. 5
fig. 6
fig. 7
Soffit
Vent
Soffit
Vent
Cross section of attic showing
ventilation paths
Ridge Vent
3.5”
3.5”
6”
Enerflex
Panel Installation Instructions
fig. 3
EnerflexFoil.com
For more information, visit http://www.EnerflexFoil.com