Floor HeatingUnderlayment Options

Depending on what products you are using to install your heated flooring system, you’ll choose between two cork underlayment options. Real cork is ideal for concrete slabs, however our synthetic product is the preferred underlayment for radiant tile and stone floor heating. Underlayment options increase energy efficiency with heated floors and they are also heat and cold resistant. Perhaps most importantly, they will not rot, absorb moisture, or support mold or mildew. This extends the life of your floors and provides a cost effective method for installing the best radiant heating floor system available.

If you’ve been considering installing a heated floor in your home, you should consider the benefits of using CeraZorb Synthetic Cork Underlayment or standard Cork Underlayment sheets. With a limited warranty included in the purchase, you can trust that WarmlyYours products will stand the test of time in your home. To find out more about which underlayment option you should choose for your heated floor, contact WarmlyYours today.

CeraZorb Synthetic Underlayment for Radiant Heating

CeraZorb® Synthetic Cork Underlayment

  • Available in 4x2 sheets that cover 8 sq ft.
  • A minimum order of 4 sheets is required.
  • Recommended when installing your TempZone™ floor heating system over a concrete slab.
  • Can be set under tile and stone, over any acceptable sub floor.
  • Up to 25 times lighter than 1/4" backer board.
  • Lightweight, only 28 lbs. per 400 sq. ft. box.
  • Heat and cold resistant, and will not rot, support mold and mildew, or absorb moisture.
  • Stable and durable, remaining unchanged after repeated impact loads.



Cork Floor Heating Underlayment

Cork Underlayment

  • Recommended when installing your Environ floor heating system over a concrete slab.
  • Cork underlayment installed on slab creates a thermo break and increases the energy efficiency of the system.
  • Available in sheets that are 1/4" (6mm) thick by 24" (61mm) wide by 36" (91mm) long.
  • Limited 10-year Warranty.
  • A minimum order of 4 sheets is required.


Cork Sheet CORK-SH6MM-2436