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Knee Wall
R-16 and a Radiant Reflector (with R-13 Fiberglass Batt)
R-19 and a Radiant Reflector (with R-13 Fiberglass Batt and 0.75” Furring (on Back of Knee Wall))  This
application is very effective for expanding a living space by finishing out an attic or an above
garage area. The benefits provided by Reflectix® are three-fold: Our
product provides increased R-values by being a Reflective Insulation
and also by eliminating air flow into the back side of the batt (which
reduces stated R-values). The third benefit addresses Radiant Heat Flow
that the wall would ordinarily absorb (a big problem for Knee Walls).
The 96% reflectivity of the product all but eliminates this heat
transfer occurrence. The product has the added attraction of ease of
handling and installation.Recommended Products: Double Reflective Insulation • BP24050 (24” x 50’)
• BP24100 (24” x 100’) • ST16050 (16” x 50’) • ST16100 (16” x 100’) • ST24050 (24” x 50’)
• ST24100 (24” x 100’) Benefits: • R-16 (with R-13 fiberglass batt) • R-19 (with R-13 fiberglass batt and 0.75” furring (on back of knee wall)) • Reflects 96% radiant energy back up into attic space • Enhances performance of a typically installed system • Increases comfort levels (by dramatic reduction in summer time heat gain) • Installs quickly and easily Testing and Certification: Reflectix® products are thoroughly
tested at either nationally approved independent laboratories or
leading universities. Tests are performed to current American Society
of Testing and Materials (ASTM) standards when a standard exists. For a
copy of an actual test report, please e-mail us at
customerservice@reflectixinc.com or call at 800-879-3645. Installation Instructions: Download Pro Knee Wall Installation Instructions.pdf • Construct Knee Wall per Building Code. • Prior to installing fiberglass batts, measure the inside height of the knee wall cavity. • Precut the Reflectix® 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. • If utilizing the Reflective/Bubble/Bubble/Reflective product, staple the edge of the product to the back face of the stud, splitting the stud - 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. • 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 Reflectix® per instruction in Method #1 (above). Important: Additional Resources: There are a wide variety of terms and words associated with the Reflectix® family of products. Those in common usage are itemized below in two categories - Products & Applications. Products: Reflective Insulation, Radiant Barrier, Cathedral Ceiling Insulation, Crawl Space Insulation, Concrete Slab Insulation, Duct Insulation Indoors, Duct Insulation Outdoors, Duct Insulation Spacers, Expansion Joint, Knee Wall Insulation, Pipe Wrap Insulation, Radiant Floor Insulation, Return Air Duct Panning, Wall Insulation, Water Heater Insulation, Metal Building Insulation, Post and Frame Building Insulation, Foil Tape, Metalized Tape, White Poly Tape, Sill Sealer, Foil Insulation, Foil Radiant Barrier, Bubble Pack Insulation, Bubble Insulation, HVAC Insulation, Easy to Install Insulation, No Itch Insulation, Energy Saving Products, Energy Efficient Products. Also, Products/Terms within our industry include: Low-e Coatings, Radiant Barrier Paint, Radiation Control Coatings, Radiant Barrier Plywood, Radiant Barrier Decking, Radiant Barrier Chips, Radiant Barrier Tax Credit. Applications: Attic, Behind Hot Water Radiator, Cathedral Ceiling, Concrete Slab, Crawl Space, Duct Indoors, Duct Outdoors, Expansion Joint, Garage Door, House Wrap, Knee Wall, Pipe Wrap, Radiant Floor, Snow Melt, Sill Sealer, Storage Buildings, Exterior Wall, Masonry Wall, Water Heater, Wine Room, Work Shop, Agricultural Building, Commercial Building, Return Air Panning, Metal Building Roof, Metal Building Wall, Post and Frame Building Roof, Post and Frame Building Wall. |
Reflectix, Inc. #1 School Street, P.O. Box 108, Markleville, IN 46056
Phone: (765) 533-4332 | (800) 879-3645 | Fax: (765) 533-2327 | Email: customerservice@reflectixinc.com
All Photos, Renderings, Illustrations and Literature are the Property of Reflectix, Inc.