Post Frame Building - Product: Reflective Both Sides
Post Frame Building - Wall - Retrofit

Inside the Girts
Metal Interior
R-6.3 Heat Flow Horizontal
Open Interior
R-5.3* Heat Flow Horizontal

Reflectix® Insulation products are a group of technologically advanced materials. They are ideal for new construction or retrofit applications in commercial, industrial, metal and post/frame buildings, along with many other DIY applications. When you think of insulation, you should think of Reflectix®. Our products are recognized for their thermal performance, easy installation, versatility and price.

Recommended Products:
Double Reflective Insulation
Staple Tab, Reflective/Bubble/Bubble/Reflective - Roll
• ST48100 (48” x 100’)

• Easy to handle and install
• Convenient roll sizes
• Class A / Class 1 Fire Rating
• Inhibits dew point condensation
• Vapor retarder (0.02 perms)
• Does not compress, collapse or disintegrate
• Non-toxic / non-carcinogenic

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 or call 800-879-3645.

Air Space Requirements:

Installation Instructions:
Download Post Frame - Wall - Retrofit Installation Instructions 0910.pdf
• The Reflectix® Reflective/Bubble/Bubble/Reflective, Staple Tab product can be installed either vertically or horizontally.
• Attach the product to the inside of the girts using 5/16” staples at approximately 4" intervals.
• Tape the seams with a Reflectix® Foil Tape (goal is an air-tight, snug seam seal).
• For interior covering, attach 1”x 2” furring strips perpendicular to the girts through the insulation.
• Attach interior panel to the furring strips.
• This will provide a 1” (nominal) air space between the interior panel and the insulation and a 1 1/2” air space between the insulation and the outside panel.

* Includes thermal resistance of 1.70 interior air film.

Calculation Disclaimer: All values are calculated based on the “ASHRAE Handbook of Fundamentals”.


Additional Resources:
F2 - Solutions for the 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.
  • Attic
  • Crawl Space R-21
  • Crawl Space R-16
  • HVAC Ducts - DIY Installer
  • A Products Introduction