Insulation for Knee Wall Application

Installation Instructions: (There are 2 methods with varying levels of benefit)

1. Product Installed in the Back of the Knee Wall Cavity – R-16 and a Radiant Reflector (with R-13 Fiberglass Batt)

• Construct Knee Wall per Building Code.
• Prior to installing fiberglass batts, measure the inside height of the knee wall cavity.
• Precut the InfraStop® to this measured length minus 1/2”.
• Start at the inside top of the first cavity.
• If utilizing the Reflective/Bubble/Bubble/Reflective, Staple Tab product, staple the tab of the product to the side of the stud and continue downward stapling every 3” to 4” – Repeat on opposite stud -The plane created by the product should be parallel to the back side faces of the studs – There should be a continuous 1/2” air gap across the bottom of the cavity.
• Install Fiberglass Batt per Manufacturer’s Instructions.
• Install a Vapor Barrier on the inside of the Knee Wall if your Building Code dictates.
• Finish interior of Knee Wall.

Product Installed in the Back of the Knee Wall Cavity – R-19 and a Radiant Reflector (with R-13 Fiberglass Batt and 0.75” furring (on the back of the Knee Wall)

• Prior to placing the Knee Wall and nailing it to the floor and rafters, attach a 1”x 2” (nominal) furring strip to the back of each Knee Wall Stud.
• Install InfraStop® per instruction in Method #1 (above).