ᐅ Underfloor Heating in an Older Home with Plank Flooring

Hello everyone,

I am currently renovating my old building and want to install underfloor heating on the ground floor. This will be done using a dry construction method. There are different suppliers offering various solutions. The options include pipes with diameters from 8mm up to 20mm (5 inches to 0.8 inches) – the advantage of 8mm (0.3 inches) pipes would be a lower floor buildup. My question is, what would you recommend?

It is worth mentioning that the insulation of the exterior will be improved with new windows, and the wall thickness is 60cm (24 inches), but is not supported by external thermal insulation.

Thank you for your support
Best regards, Jürgen

Did I understand correctly that an old plank floor is going to be replaced by a floor with underfloor heating? Or is underfloor heating going to be installed in combination with new planks?

hampshire schrieb:
Did I understand correctly that an old plank floor is going to be replaced with a floor with underfloor heating? Or is underfloor heating going to be installed together with new planks?

Hello hampshire, you are right, my description was quite vague.
I want to remove the plank floor on the ground floor, install OSB boards, and lay underfloor heating on top. (I think doing everything with dry screed panels might cause a weight issue – but I am open to suggestions here as well.)

On the upper floor, I want to remove the old plank floor and replace it with new planks. The exception is the bathroom, where, like on the ground floor, OSB boards and underfloor heating will be used.

It is important for me to know whether the significantly thinner system with 8mm (0.3 inches) pipes is really a good choice or if I should rather go with a system that uses thicker pipes.

Thanks for the support.

As a big fan of hardwood floors, I unfortunately cannot wholeheartedly recommend your plan. (Have you ever looked into wall-integrated solutions?
Our underfloor heating system (2001), which apparently was poorly or improperly installed as some forum members here suspect, is not an ideal heating solution. However, it does add value when reselling the property, which is a benefit.
Good luck with your project.