Skithepowder

Builder has suggested overlay panel UFH in a renovation/extension. Like the idea of it but want to be sure it will heat the space effectively and efficiently given that half of the main room being heated is an uninsulated concrete slab. What professionals plan heat loss and how effective a system will be? Should someone and if so who, be doing heat loss calculations and matching that against what they expect the system to be doing in the particular circumstances surrounding installation in our house? I would feel more comfortable if someone did something like this rather than just saying it’ll probably be ok or you’re not the first or last to do it.

Thanks, I don’t think it makes sense for how it flows to other rooms to raise the floor by that much for insulation, seems standard radiators will be better.

Thanks, about half of the floor space of the room is renovation, half is an extension. Not sure how good u value of current floor is. The system we have looked at is one of the overlay/warm panel wet systems like this https://solarandheatstore.com/product/prowarm-18mm-low-profile-overlay-single-room-kit/ not sure how much the heat conducting boards that are part of these systems aids the heat loss downwards etc in this situation.

We will be having an open plan kitchen/dining/family room circa 46m sq. L shape with bifolds/glass on 4.6m of wall and another 3m and 2m section of the L. Total volume of the room 122m3 as part of the L has a vaulted ceiling. There are a few locations that could put radiators. It is renovation but have the option of using a wet underfloor heating system with panels such as Prowarm overlay panel. Is underfloor heating going to be much better at heating such a space than radiators? I assume will be little more efficient and saves wall space and maybe looks sleeker, but bigger upfront cost and radiators could be a bit of a design feature if done right. Purely from the perspective of heating a largish space with a large amount of glass is one much better than the other?