Residential Radiant Barrier Applications

Reflective Insulation

Installation Instructions:

(There are 2 options)

1. Directly to Roof Deck - Above Fiberglass - Southern Zone of the USA Only

• Benefit - R-6.0 Summer & R-2.0 Winter

• It is easiest to install either 16” or 24” wide product (depending on rafter spacing).

• Begin at the top of the cavity. Run product flush to the decking, parallel to the rafter.

• Staple sheet directly to the deck (nails poking through the Reflectix

product from above will not

interfere with performance).

• Do not block any venting (cut around).

• No need to cover rafters (no loop around).

• Ensure that a continuous air space (0.75 inch minimum) is on the bottom side of the Reflectix

product

(required and for ventilation).

• Install venting and mass insulation per local codes and manufacturer’s installation instructions.

2. Attached to the Lower Edge of the Rafter

Below the Mass Insulation (Fiberglass) - Northern Zone of the USA Only

• Benefit - R-7.0 Summer & R-1.0 Winter and a Vapor/Moisture Barrier

• Either the 16” or 24” wide product (depending on rafter spacing) is recommended.

• The Staple Tab product is the easiest to work with for this application (but the Standard Edge product

is equally effective).

• Install venting (required in Cathedral Ceilings) and mass insulation per local codes and manufactur-

er’s installation instructions.

• A minimum of a 0.75” air space is required on the underside (towards the interior of the home) of

the Reflectix

product. This air space can be created in one of two installation methods:

1. Tuck the product up into the cavity and staple to the side of the rafter every 2 to 3 inches fully

enclosing the rafter cavity.