![]() Newer versions of PEX include an oxygen barrier. Tiny amounts of oxygen are able to penetrate the PEX lining, causing corrosion to metal components, such as cast iron boilers. Early on, PEX was not without hiccups as well. With time, the tubing leaked and the systems were abandoned. This was not so with ‘50s- and ‘60s-vintage radiant systems that relied on copper tubing embedded in concrete. The growing popularity of PEX (cross-linked polyethylene) tubing during the past 15 to 20 years has made radiant floors easier to install and leak-free. ![]() Batts of fiberglass insulation are installed under the mats so most of the heat goes up, not down. You will, of course, need access to the bays from a basement or crawl space. No mortar is required.ĭon’t want to pull up your existing flooring? Companies such as SunTouch make electric radiant pads that fit in joist bays under the subfloor. Just roll it out, tape it in place, cover with floating-type flooring, and make the electrical connections. One manufacturer, Thermosoft, makes pads that produce 31 BTUs per square foot. There are also radiant electric floor heating pads that can be installed under laminate and other floating floors, such as engineered hardwood. Ceramic or stone tile are popular finished floor choices. ![]() The cables, which are often pre-attached to mats for ease of installation, are installed over the subfloor in a bed of thin-set mortar. Electric radiant heating systems are typically supplemental, not meant to be the sole heat source for a room. ![]()
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