4800 NT Radiant Barrier
Reduce air conditioning costs in summer while reducing heating costs in winter. Perfect for attic applications.
96%
Heat Reflected
Class 1/A
Fire Rating
Perf / Solid
Versions
Attic / Wall
Application
Product Overview
rFOIL 4800 NT Radiant Barrier dramatically reduces heating and cooling costs by blocking 96% of radiant heat transfer. In summer, it lowers attic temperatures while reducing workload on your HVAC system. In winter, it helps existing fiber insulation retain heat and lower energy usage. Choose perforated (4800P) for house wrap applications or solid (4800S) for vapor barrier requirements. Lightweight, flexible, and easy to install, it works standalone or layered over existing insulation in attics, walls, and ceilings.
Materials
A single layer of woven polyethylene bonded to and sandwiched between two highly reflective aluminum radiant barrier sheets
Available Sizes
- 48″ × 125′ (for both 4800P and 4800S)
- 48″ × 250′ (for both 4800P and 4800S)
- Custom sizes available
Tips
- Choose 4800P (perforated) for house wrap and breathable applications
- Choose 4800S (solid) when a vapor barrier is needed
- For RF shielding requirements, choose rFOIL 1800 instead
Warranty
10-year limited warranty; see Warranty sheet below for details
Certifications
RIMA-I Verified
A single layer of woven polyethylene bonded to and sandwiched between two highly reflective aluminum radiant barrier sheets
- 48″ × 125′ (for both 4800P and 4800S)
- 48″ × 250′ (for both 4800P and 4800S)
- Custom sizes available
- Choose 4800P (perforated) for house wrap and breathable applications
- Choose 4800S (solid) when a vapor barrier is needed
- For RF shielding requirements, choose rFOIL 1800 instead
10-year limited warranty; see Warranty sheet below for details
RIMA-I Verified
Product Benefits
Blocks 96% of radiant heat transfer
Lowers summer attic temperatures
Increases winter attic heat retention
Perforated for breathability (4800P)
Class 1/A fire rating
Enhances performance of installed fiber insulation
Clean, safe, and easy to install
Easy to cut and configure around obstructions
Durable and flexible polyethylene base
Applications
- Attic Floor Joists: Stapled across joists on the attic floor
- Over Rafters: Installed over rafters before roof deck
- Under Rafters: Stapled to underside of rafters in finished attics
- House Wrap (4800P): Perforated version as exterior radiant house wrap
- Under Wood Sub-Floor: Insulation beneath wood subflooring
- Walls & Ceilings: Adds radiant barrier behind drywall
Specifications & Literature
Installation Sheets & CAD Details (6)
Data Sheets (2)
R-Value Guide (1)
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NT Radiant Barrier (On Attic Floor Joists)
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NT Radiant Barrier (Over Rafters)
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NT Radiant Barrier (Under Rafters)