When should Underfloor Heating be installed?

Underfloor heating is done just before the final flooring is installed.  The walls should be lined.  All gib stopping and sanding should be complete.  All painting should be done. The floor needs to be clean and have all debris removed (including dust)

Underfloor heating install is only a very small portion of the build process. Excellent planning is required to make sure you are not holding up other parts of the building process.