CeraZorb® Insulating Synthetic Cork Underlayment (4′ x 4′) - 25 Sheets / 400 sq.ft
Part Number: CZRG-SH5MM-48X48-P25
This support page provides publications, manuals, specifications, videos, support articles, and common support questions
This support page provides publications, manuals, specifications, videos, support articles, and common support questions
Common Support Questions (8)
Publications and Manuals (3)
Specifications (12)
Videos (4)
Articles (4)
Related Items (4)
Similar Items (9)
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Common Support Questions
When installing electric floor heating over a concrete slab, an insulating underlayment like CeraZorb is highly recommended to ensure efficient operation, faster heating times and warmer floor temperatures.
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No, CeraZorb underlayment floats over the subfloor, adjacent sheets are staggered and taped together to prevent any overlapping.
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CeraZorb is a synthetic cork underlayment, it is made of hemi-crystalline thermoplastic.
Warmly Yours recommends CeraZorb 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.
- CeraZorb (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 light commercial 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, CeraZorb will not expand under self leveling cement (SLC).
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No. Put a skim coat of SLC, or even plywood over it first. Then, the vinyl flooring product can be installed.
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Yes, all pressure-sensitive adhesives are fine.
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A decoupling membrane protects the installation from differential expansion/contraction between the substrate and the flooring, relieving almost all shear stresses. Crack isolation protects the installation by isolating the flooring from minor in-plane substrate cracking.
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Yes, CeraZorb should be bonded to the subfloor with any high quality modified thin-set, or with a bond coat adhesive. Further installation information can be found in the installation manual or in this short video clip.
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Publications and Manuals
Specifications
Insulation Specification
| Acoustic testing on 6" slab, no ceiling | IIC 52 wood construction. FIIC 59 - 7.5" concrete slab. ΔIIC 20 - 6" concrete slab |
| Compressive Strength | 34 psi @ 10% Deformation |
| Thermal Insulation | 1.5 R-Value |
Logistics
| Country of Origin (COO) | United States of America |
Product Dimensions
| Coverage | 400sqft |
| Depth | 0.1969in |
| Length | 48in |
| Width | 48in |
Identifiers
| SKU | CZRG-SH5MM-48X48-P25 |
| UPC (GTIN-12) | 881308056308 |
Warranty / Certifications
| TCNA Robinson test | Light Commercial |
| Warranty | 5 years |
Videos
Product Line Videos
Articles
Cerazorb layers. Is it OK to put one layer of Cerazorb over another?
Cerazorb Specs and Installation Exclusions
How to Install Cerazorb to Cement Slab. Can Vinyl (LVT/VCT) be installed directly on Cerazorb?
How to Install Cerazorb Under A Floating Floor
Cerazorb Specs and Installation Exclusions
How to Install Cerazorb to Cement Slab. Can Vinyl (LVT/VCT) be installed directly on Cerazorb?
How to Install Cerazorb Under A Floating Floor
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Similar Items
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