Radiant Floor – In a Subfloor

The Reflectix® Double Reflective Insulation consists of two layers of highly reflective film (96% reflectivity) that are bonded to two tough layers of polyethylene. Two inner layers of insulating bubbles and a center layer of polyethylene provide this easy to handle product with high strength and reliability.

• Reduces installation labor because of its easy to handle and install characteristics
• Reflects 96% of the radiant heat back into the living space
• Reduces annual energy costs of the system
• R-4.6
• Directs heat into living space
• Enhances even heat distribution across the floor surface
• Fiber-free
• Non-toxic / non-carcinogenic
• Does not promote the nesting of
• ISO 9001:2015 certified manufacturing location insects

• HVBP48125 (48”x 125’)

• Temperature Range: -30 to 180 F
• Flame Spread: Under 25 *
• Smoke Development: Under 50 *
• Perm Rating: .02 **
• Puncture Resistance: 60 lb./in. ***
• Vapor Transmission .02
• Mold and Mildew: No Growth
• Emittance: 0.04
• Pliability: No Cracking
• Hot Surface Performance: Passed

* ASTM Test Method E-84 • ** ASTM Test E96 *** FSTM 101 B Method 2031

• Thermal Performance Calculation – R&D Services
• Emittance ASTM C1371
• Permeance ASTM E96/E96M
• Flame Spread and Smoke Density ASTM E84
• Hot Surface Performance ASTM C411
• Humidity Resistance ASTM C1258
• Adhesive Performance ASTM C1224
• Pliability ASTM C1224
• Fungi Resistance ASTM C1338
• Puncture Resistance FSTM 101 B Method 2031

Note: Installation instructions and illustrated drawings are recommendations only, while proper local construction methods are the responsibility of the installer.

Note: For all methods (retrofit), inspect the structural integrity of the sub-floor, and make any needed repairs before installing Reflectix®.

• Unroll the Reflectix® Reflective Insulation over the existing floor. Cut product flush with the walls.
• Butt the seams of the insulation and seal with 2” wide foil tape. Note: Utilize a flat edge taping tool to assure good adhesion on all tape.
• Install Radiant Floor System per manufacturer’s specifications, sleepers and new (top) subfloor.

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).

N39 – Reflectix Fact Sheet per FTC Rev 0118

Pictured: Double Reflective Insulation

F57 – Rad Fl Sub Floor Submittal Revised 102022