HVAC/R & Plumbing Contractor
R-5.6 Duct Insulation

Click here for Submittal Sheet for Duct R-5.6 (N18 Revised 1012).pdf


Reflectix® Duct Insulation may be installed by wrapping rectangular or round ductwork in HVAC applications. The product costs less to install due to its lightweight, easy to cut and handle installation characteristics. Reflectix® is extensively tested by either nationally independent laboratories or at leading universities. Please refer to the Submittal Sheet pdf above for detailed testing results and product specifications.

Recommended Products:
Double Reflective Insulation
Reflective - Roll

• HVBP12050 (12” x 50’)
• HVBP16050 (16” x 50’)
• HVBP24050 (24” x 50’)
• HVBP36050 (36” x 50’)
• HVBP48050 (48” x 50’)
• HVBP60050 (60” x 50’)
• HVBP12100 (12” x 100’)
• HVBP16100 (16” x 100’)
• HVBP24100 (24” x 100’)
• HVBP36100 (36” x 100’)
• HVBP48100 (48” x 100’)
• HVBP60100 (60” x 100’)
• HVBP12125 (12” x 125’)
• HVBP16125 (16” x 125’)
• HVBP24125 (24” x 125’)
• HVBP36125 (36” x 125’)
• HVBP48125 (48” x 125’)
• HVBP60125 (60” x 125’)

• R-5.6
• Easy to handle and cost less to install
• Non-toxic / non-carcinogenic
• Lightweight and clean
• Not affected by moisture or humidity
• Resists growth of fungi, mold and mildew
• No need for protective garments or respirators when installing
• When sealed properly, aids in reducing duct leakage

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. To obtain a copy of our Product Testing Specifications, please refer to our website “Literature Tab” above. The documents are also available by e-mail at customerservice@reflectixinc.com or call 800-879-3645.

Federal Trade Commission Fact Sheet: Installation Instructions:
Note: Installation instructions and illustrated drawings are recommendations only, while proper local construction methods are the responsibility of the installer.

Spacer Wrapped in a Candy Cane Fashion
Spacer: HVSPW02025 (Reflectix® Spiral Pipe Wrap 2” x 25’
• Refer to the two diagrams above.
• Make sure all sheet metal joints, seams and penetrations are sealed.
• Wrap and secure spacer material to the duct in a candy cane fashion. Proceed down the duct in one direction with a repeat of the wrap at 12” intervals. Use UL 181 Acrylic Adhesive Foil Tape to fasten the spacer in place.
• Verify the circumference of the duct with the spacer strip in place.
• Cut the Reflectix® product to this length plus 1”.
• Wrap the product around the duct and securely tape the linear and circumference seams (overlapping 1”- 2”) with UL 181 Acrylic Adhesive Foil Tape (goal is an air-tight, snug seam seal).
• Do not leave any exposed duct or space where air can enter between the duct and the Reflectix®.

Please Note Regarding Hangers:
Strap Hanger: Wrap Reflectix® with the seam at the hanger. Tape seam tightly around hanger.
Saddle Hanger: Make sure that there is a spacer below the hanger, between the insulation and the duct, to prevent the insulation from touching the duct.

Additional Resources:
F14 - Solutions for the HVACR Pro (Revised 0416)
Zip Code Zone Locator
This function provides regional installation recommendations for the following applications: Attic & Cathedral Ceiling
DIY Product Calculator Type:
Roof/Attic Application: Radiant Barrier Locate a Retailer
0 sq. ft. of roof/attic area 0 rolls
*Note: This calculator is for the convenience of our customers. These recommendations are for approximate product quantity.

Video Library:

For additional videos, click here.
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  • Crawl Space R-21
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  • HVAC Ducts - DIY Installer
  • A Products Introduction