Heating Mats – NADWM

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What do I do with the factory joint?

The factory joint, as pictured below, MUST be installed in the floor. If it is not installed in the floor, the joint may give and your system will no longer work. Not only will your warranty be voided but you will have to repair the joint and place it back into the floor.  The joint connects the heated wire to the unheated lead.  NEVER leave the factory joint exposed to air and do not place it behind the wall.

Since the factory joint must be encapsulated in thinset or floor leveler and is thicker than the heating wire, to eliminate the height difference issue, consider cutting a channel in the subfloor for the joint. 


Factory Joint