166 sqft, 16" x 125ft rFoil Between-Joist Reflective Radiant Heat Insulation


Brand: rFoil

Mfr Part#: 2222-16-125

Availability: In Stock
Usually ships: within 1 business day
Qty Price
$80.00 / each & Free Shipping
x6 $456.00 & Free Shipping
(6 x $76.00 / each)
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16" wide x 125ft long (166 sqft total) roll or reflective bubble insulation by rFoil. Designed for installation between the 16" OC (On Center) joists, this insulation offers excellent R-value, provides a water vapor barrier and is overall a much healthier alternative to fiberglass insulation. It is Class A/1 fire-rated and is suitable for projects with or without PEX radiant heat (where PEX tubing is stapled to the bottom of the subfloor/plywood).
Insulation has 1" side tabs which make stapling easier. For optimal performance, use with rFoil 2" wide metalized tape #15012 or similar.


  • For 16" OC (On Center) joists;
  • Double-bubble design;
  • 3-in-1 insulation, radiant barrier and vapor barrier;
  • 1" side tabs make stapling easier;
  • Unaffected by moisture & humidity;
  • Class 1/Class A fire rating;
  • Suitable for ceilings (between joists), walls & crawl spaces;
  • No fiberglass particles in the air, no mess.

Technical Specifications:

  • Coverage: 166 sqft (16" wide x 125ft long);
  • R-Value (per ASTM C1224): R-13.0 (Between-joists, staple-up application); R-15.2 (Heat flow down); R-8.5 (Horizontal heat flow);
  • Operating temperature range: -50°F - 180°F;
  • Nominal thickness: 5/16";
  • Weight: 1.25 oz/sqft;
  • Water vapor permeability: <0.02 perms;
  • Reflectivity: 0.96;
  • Emissivity: 0.04.
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