WarmlyYours 2' x 4' CeraZorb Insulating Synthetic Cork Underlayment Sheet, Lightweight - 8 sq. ft. Coverage
Key features
- •SYNTHETIC CORK UNDERLAYMENT: Specifically designed for setting tile and stone and is an excellent insulation choice under our WarmlyYours TempZone Electric Radiant Floor Heating product. R-value 1.5, with compressive strength 34 psi at 10% deformation, IIC 52 wood construction, FIIC 59 - 7.5" concrete slab. ΔIIC 20 - 6" concrete slab, TCNA Robinson test Light Commercial
- •PREVENT HEAT LOSS: Recommended when installing an electric floor heating system over a concrete slab. By creating a thermal break, the heat is prevented from sinking into the concrete, and more heat radiates into the floor covering and room
- •LIGHTWEIGHT AND SOUND DAMPENING: Up to 25 times lighter than traditional 1/4" backer board, also provides sound dampening benefits and double the crack isolation benefits when compared to cork
- •COMPATIBLE SIZE: Available in 2' x 4' and 4' x 4' sheets, 5 mm. (roughly 3/16 in.) thick. This is a pack of 1 sheets, provides 8 sq. ft. of coverage and is great for medium to large projects
- •5-YEAR WARRANTY: Limited 5-year warranty and 24/7 lifetime installation and technical support at 800-875-5285
WarmlyYours 2' x 4' CeraZorb Insulating Synthetic Cork Underlayment Sheet, Lightweight - 8 sq. ft. Coverage
List Price: $73.51$66.16DEALYou Save: $7.35 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 22, 2026In Stock (1)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers2.7
out of 5
Based on 2 reviews
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Five Stars
William Ward•March 25, 2017
Met the condo requirements and was easy to install.
Wonderful product!
Kayla•August 5, 2013
I did all kinds of research about laying down radiant heat for the two unfinished bathrooms in my basement. I was worried about spending money to basically heat the concrete below as well as heat the tile. This stuff gives you a barrier so the sensor is not reading the temp of the concrete below and just reads what you want to hear. It was very easy to install, dry lay probably took the longest. From there its thinset, then Cerazbor, and top with thinset. Let that dry overnight and come back the next day for the radiant heat. Check out Edge Strip Kits, install on top of the Cerazorb for an edging. Then place your radiant heat, sensors, and then have a self leveling cement poured over the radiant heat. The Edge Strip Kits will keep all of the self leveling cement inside the room and you won't have to worry about a big mess.
