Metal Building – Roof – New

Double Reflective Insulation

Reflective/Bubble/Bubble/Reflective – Roll

• BP48100 (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

Installation Instruction pdf: MB2 Roof New Revised 042023

There are 2 Installation Options

1. Open Interior with 3/4” Thermal Breaks

R-10* Heat Flow Down (and a Radiant Barrier)

R-4.5* Heat Flow Up

• After the red metal is erected, install the Reflectix® Reflective/Bubble/Bubble/Reflective product over the purlins by using 1/2” self-tapping metal screws and screwing the product to the purlins.
• Tape the seams with a Reflectix® Foil Tape (goal is an air-tight, snug seam seal).
• Install at least a 3/4” thermal break. If installing a standing seam roof, use clips with thermal breaks.
• Install roofing either by screwing corrugated metal screws through the thermal break and insulation to the purlin or install a standing seam roof.
• If an interior finish is to be installed, attach to the bottom of the purlins.
• This will create a 3/4” air space between the roofing and the insulation and an 8” air space between the insulation and the interior finish.

2. Open Interior without Thermal Breaks and a Nominal 3/4” Drape

R-7.6* Heat Flow Down (and a Radiant Barrier)

R-3.9* Heat Flow Up

• Per instructions above without the thermal break.
• Install the product with a ¾” drape at the center of the cavity. Insure the insulation is not in full contact with the roof sheathing (only contact point should be at the purlin/roof sheathing).

* Includes thermal resistance of 1.32 UP and 4.55 DOWN for interior air film.

Calculation Disclaimer: All values are calculated based on the “ASHRAE Handbook of Fundamentals” heat flow up and down.

Review These Important Safety Guidelines Prior to Installation:

• ALWAYS check local building codes before installing Reflectix®.
• ALWAYS check the area you are insulating and make any needed repairs. Any worn wiring should be replaced before you begin installing Reflectix®.
• ALWAYS make sure work areas are well ventilated and well lighted.
• ALWAYS use eye protection when operating a staple gun.
• ALWAYS use caution and common sense when using a staple gun. Be aware of electrical wiring locations. Stapling into a wire can cause severe shock or death. NEVER staple into electrical wiring.
• ALWAYS be careful when working with large pieces of Reflectix® on windy days.
• When installing Reflectix® on bright sunny days, it is best to wear sun glasses.
• Do not work in areas such as attics when temperatures are too hot.
• Please Note: The intention of these Installation Instructions and 3-D renderings are for the sole purpose of illustrating the correct location and relative position of the Reflectix® products in specific building assemblies. The correct construction methods and techniques are the responsibility of the installer or contractor. The methods outlined are recommendations on location of the Reflectix® products as a guideline. There are no claims on the part of Reflectix, Inc. that these building assemblies are finite standards or meet building code requirements (as they can vary by region).

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 the “Additional Resources” tab. The documents are also available by e-mail at customerservice@reflectixinc.com or call (800) 879-3645.

Metal Bldg Air Space Requirements Rev 0615

Reflectix Literature / Product Testing Specifications

F2 – Solutions for the Pro Revised 012024

Pictured: 1. Double Reflective Insulation