Underfloor heating for new and existing space

Hi, all three options could work as long as you have the controls set up correctly so that the radiators (if you go with that option) do not affect the thermostat for the UHF and vide-versa, which is just some basic planning. Given the size of both areas, you are going to need more than one UFH circuit, so for the cost of digging out the existing floor, it would make sense to go with the overlay system if you can get the levels of the two areas to marry up (or can get a step to work). You will probably end up with about 4 circuits in total, controlled of one or two thermostats connected in parallel, just make sure whoever wires the controls up fully understands the plumbing side of things, as more often than not, that’s where we find issues. Hope that helps and good luck.

Choosing the right underfloor heating (UFH) solution for your new and existing space depends on several factors, including budget, desired heating performance, and the feasibility of installation. Each option has its pros and cons, so let's consider them in more detail: UFH on the Extension and Radiators in the Existing Part: This option is relatively straightforward and cost-effective, as you'll only need to install UFH in the new extension. Radiators in the existing part can complement the heating system and provide adequate warmth. You'll have separate heating zones for the extension and the existing area, allowing independent temperature control for each space. If the existing space is adequately insulated and you are satisfied with the performance of radiators, this can be a practical solution. Dig Out the Floor for UFH Everywhere: While this option offers the benefits of a fully uniform UFH system throughout the entire open plan space, it can be disruptive and expensive due to the need to remove the existing floor and install UFH. Depending on the floor construction and accessibility, it may be challenging to carry out the excavation without causing significant disruption to the house. Normal UFH in the New Part and Overlay System in the Existing: This option can combine the benefits of UFH in the new extension with a less invasive overlay system for the existing space. The overlay system involves adding a thinner layer of UFH on top of the existing floor, which minimizes disruption and cost compared to digging out the floor. Ensure that the floor height and any necessary door adjustments can accommodate the additional thickness of the overlay system. Considerations: When combining UFH systems (option 3), it's essential to choose compatible products from the same manufacturer to ensure they work well together. Keep in mind that UFH provides a more even and comfortable heat distribution compared to radiators, which can result in better energy efficiency and reduced running costs. The insulation of the existing space is a crucial factor. Proper insulation helps retain heat and enhances the performance of both UFH and radiators. Before making a final decision, consult with a heating engineer or a specialist in underfloor heating. They can assess your specific situation, discuss your preferences, and provide professional advice on the most suitable UFH solution for your home. Additionally, check if there are any building regulations or planning permissions required for the installation of UFH in your area.