Concrete Radiant Heat Insulation
Concrete Radiant Heat Insulation

500 sqft, 4ft x 125ft rFoil Concrete Radiant Heat Insulation


Brand: rFoil

Mfr Part#: 4320-48-125

Availability: In Stock
Usually ships: within 1 business day
Qty Price
$380.00 / each & Free Shipping
  • Description
  • Reviews
  • FAQs (1)

rFoil Concrete Radiant Heat Insulation Underpad (500 sqft) is used for thermal insulation of concrete slabs in PEX radiant heating installations.


  • Saves energy and money
  • Prevents condensation and radiant heat loss
  • Easy to form around obstructions
  • Insulate under concrete slabs, beneath concrete over-pours, edge-slabs and expansion joints
  • Class 1 / Class A Fire Rating - ASTM E84-09

Technical Specifications:

  • Coverage: 500 sqft
  • R-VALUE: The ASTM C236-1224 tests that determine a products R-Value yield the following results for rFOIL Reflective Insulation:
    - Heat Flow Down = R-10.6
    - Heat Flow Horizontal = R-6.8
    - Heat Flow Up = R-5.3
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Can this be used over an existing slab under carpeting or laminate flooring?
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6 of 6 people found this answer helpful.
This radiant bubble insulation is designed strictly for slab insulation - whether between ground and slab or between two slabs. It is designed to be fully covered with concrete and is not designed to be exposed to finished flooring, padding, etc.
Answered on 9/11/2012 by PexUniverse Customer Service
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