ThermalSheet Insulating Underlayment is a synthetic cork, a lightweight thermal barrier made of hemi-crystalline thermoplastic.
WarmlyYours recommends ThermalSheet underlayment when installing a floor heating system over a concrete slab to prevent heat loss and protect against moisture. It will not rot, support mold and mildew, or absorb moisture.
- ThermalSheet synthetic cork underlayment (6mm) has a 1.5 R-value, crack isolation up to 1/4“, reduces sound by up to 22 dB, and is Robinson tested (TCNA) and rated for residential loads.
- Cork (6mm) has a .72 R-value, crack isolation up to 1/32“, reduces sound by up to 23 dB, and is Robinson tested (TCNA) and rated for residential loads.
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Yes, unlike natural cork, ThermalSheet will not expand from self leveling cement (SLC).
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Country of Origin (COO) | United States of America |
Coverage | 60 ft² |
Length | 20′ |
Thickness | 0.25″ |
Width | 3′ |
SKU | CORK-0320 |
Thermal Insulation | 0.72 R-Value |
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