Installation Instructions

• Repeat for each joist that contains the Radiant Floor System.
2. Product Installed to Underside of Floor Joist - R-16 and a Radiant Reflector
• Begin at one end of a joist cavity (that contains the Radiant Floor System) and install the product
“end” with staples to the sub-floor or band board. Proceed down the joists by stapling each edge (or
middle of the Reflective/Bubble/Bubble/Reflective 48” wide product) to the face of each joist. Staple
at intervals of approximately 3” to 4”. Enclose the entire joist run(s).
• Seal seams with Reflectix
®
Foil Tape to create a vapor/moisture barrier.
• Repeat for each joist that contains the Radiant Floor System.
3. Product Installed Inside the Joist Cavity - Diminished R-Value / Radiant Reflector
• It is possible to install the Reflectix
®
inside the joist cavity (utilizing the Reflective/Bubble/Bubble/
Reflective, Staple Tab product).
• Start at one end of the house. Tuck the Reflectix
®
into the joist cavity.
• Each edge of the product has a 3/4” staple tab. Determine the depth inside the cavity that the
product is to be installed and attach the product with staples (through the tab) at approximately 3” to
4” intervals. Repeat on opposite joist.
• The less air space between the product and the sub-floor, the lower the R-Value (although reflectivity
will be maintained).
Examples of benefits based on air space width above product:
• 0.5” air space = R-2.7
• 0.75” air space = R-4.6
• 3.5” air space = R-8.2
4. Product Installed Inside the Joist Cavity with Mass Insulation Below -
Diminished R-Value / Radiant Reflector
• It is possible to install the Reflectix
®
inside the joist cavity above a Mass Insulation Batt.
• Utilize Reflective/Bubble/Bubble/Reflective, Staple Tab product Method specified in #3.
• Refer to R-Values in Method #3 to determine benefit gain in your system.
5. Product Installed Inside the Joist Cavity with Mass Insulation Above R-2.7 with a 0.5” Enclosed Air Space
or R-4.6 with a 0.75” Enclosed Air Space
• Reflectix
®
can be installed below the Mass Insulation Batt.
• Refer to Method #3 for installation procedure, air space options and resulting R-Values.
• Finish with an interior panel below the Reflectix
®
(typical when finishing a basement).