When installing screeding over underfloor heating, it is important to take the right approach with your screeding as it can affect how your subfloor will perform. If you don’t consider the correct layers, it can be problematic for the system and lead to a number of issues with your floor coverings and the structure as a whole.

Screeding over underfloor heating is a specialist area that requires special care and attention to ensure it is successful. If you are not experienced in this area, it is best to seek out the advice of a professional. They will be able to provide you with the necessary information to make your installation a success.

Screeding Over Underfloor Heating: Best Practices and Considerations

There are two main types of screed that are suitable for underfloor heating: dry and self-leveling. A dry screed is made up of cement and sand in a ratio of 1:3-5, along with fibre additives to prevent cracking and water for hydration. A self-leveling screed is made up of calcium sulfate, sand and water and can be poured or pumped onto the floor area, spreading itself to the desired level without the need for additional admixtures.

If you are experiencing issues with your underfloor heating and you believe that the problem is caused by a failure in your screed then it is important to carry out a pressure test on each of the heating circuits before laying the concrete. This will enable you to find the source of the issue and rectify it before it can cause further damage to the UFH pipes.