After seven days, you can begin to increase the heat in your underfloor heating system gradually. The heating should be increased in increments of 3-5oC and at no point should the temperature rise to 50oC.
If you intend to tile over the underfloor heating, there is a 3-week cycle that we would recommend you implement to ensure your screed and heating stay in the best condition possible. This includes gradually increasing the temperature of your underfloor heating over seven days until it gets to the operating temperature. This temperature should then be maintained over seven days before allowing the system to cool down for a further seven days. Once this process has finished, you are free to apply any floor covering you like.
After tiling, the underfloor heating should remain off for 14 days and then the temperature should be increased gradually up to the operating temperature of your choice.