In the past, the answer was always no, largely because older radiant systems set their hydronic tubing into slabs of gypsum concrete too heavy to be added in a realistic retrofit scenario. Fortunately, radiant heat technology has come a long way in recent years. Now, thanks to specially designed panels from Warmboard, it's not only possible but practical to install radiant heating as part of a remodel. Measuring only 13/16" thick, Warmboard-R panels fit easily over existing slabs and subfloors and are thin enough not to create unevenness between floors in different rooms. Building a new home? Save money and time by opting for a full-thickness product like Warmboard-S, which doubles as structural subfloor. To get all the info on the full line of Warmboard radiant heating products, click here now!