HVAC/R & Plumbing Contractor
Radiant Floor - Over an Existing Floor
Click here for Submittal Sheet for Concrete Slab (N24 Revised 1012).pdf


Reflectix® has an insulating upgrade available for a radiant floor system installed over an existing floor; our specially designed Concrete Slab Insulation. The unique characteristics of this product contribute to energy savings along with a more even floor surface temperature. The bonus characteristic to this product is how easy it is to handle and install.

Recommended Products:
Concrete Slab Insulation
Concrete Slab Insulation, White/Reflective/Bubble/Bubble - Roll
• DBWEF48125 (48” x 125’)

• R-1.1
• Promotes even heat distribution
• Increases system efficiency
• Reduces annual energy costs of the system
• Installs quickly and easily
• Non-toxic / non-carcinogenic
• Vapor retarder

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.

• Unroll the Reflectix® Concrete Slab Insulation over the existing floor prior to pouring the concrete (white poly side facing up). Cut product flush with the walls.
• Butt the seams of the product and seal with 3” wide poly tape. Note: Utilize a flat edge taping tool to assure good adhesion on all tape.
• Install Radiant Floor System per manufacturer’s specifications.

Additional Resources:
F14 - Solutions for the HVAC Pro (Revised 0616).pdf
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.

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