Pro Residential, Post Frame and Metal Building 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.
Recommended Products:
Reflective/Bubble/Bubble/Reflective - Roll: BP24025 (24”x 25’), BP48025 (48”x 25’)
Staple Tab, Reflective/Bubble/Bubble/Reflective - Roll: ST16025 (16”x 25’)
Radiant Barrier, Reflective/Woven Fabric/Reflective - Roll (Heavy Duty): RB4812550 (48”x125’)
There are two methods for installing Reflectix products in a Cathedral Ceiling. For the Regional Recommen-
dation on which installation method you should consider for your home, please utilize the “Zip Code Zone
Locator” function on the “Application - DIY - Cathedral Ceiling” webpage at www.reflectixinc.com.