Preliminary procedures and verifications
Some preliminary verifications are necessary before the heating system can be installed: 
?Control that the surface of the subfloor is flat, does not sink and is free of masonry debris.Verify whether the anti-humidity barrier needs to be used; to be utilized in rooms that lie directly over the ground.At this stage, the cabinet for the distribution manifold and the mixing kit should already have been installed and encased.verify that the available floor size will allow for the installation of the scheduled floor heating system.???