4320 Standard Concrete Underpad

Outstanding reflective insulation and puncture-resistant vapor barrier for under concrete applications.

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70 PSI

Compression Strength

8.4 mil

Bubble Core

48″, 72″, 96″

Roll Widths

Vapor Barrier

Approved

Product Overview

Our rFOIL 4320 Standard Concrete Underpad is an outstanding reflective insulation and puncture-resistant vapor barrier. It consists of a double layer of polyethylene bubbles sandwiched between an aluminum surface and a clear polyethylene sheet.

It is ideal for many under-slab insulation applications because a protective film is applied to the aluminum surface, virtually eliminating the risk of corrosion. Using rFOIL 4320 in your construction project can improve the efficiency of radiant heating systems and significantly decrease heat loss to the ground below when properly installed with the clear side facing upwards.

rFOIL 4320 provides exceptional thermal value and a strong, permanent vapor and radon barrier. Use it as a cost-effective alternative to rigid foam insulation.

Materials

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Available Sizes

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Tips

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Warranty

10-year limited warranty; see Warranty sheet below for details

Certifications

RIMA-I Verified

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10-year limited warranty; see Warranty sheet below for details

RIMA-I Verified

Product Benefits

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Concrete Underpad Improves Radiant Heating System Efficiency
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Provides Continuous Thermal Break Below the Slab
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Reduces Radiant Heat Loss
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Strongly Bonded to Resist Delamination
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Multi-Layer 8.4 mil Bubble Core
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Unaffected by Lime and other Corrosive Chemicals Found in Concrete
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Quick, Safe, and Easy Installation Results in Lower Labor Costs
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Keeps Underground Moisture Away from Slab
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Easy to Cut and Configure around Obstructions