Skip waterborne underfloor heating in bathroom?

[Dr Benz]

Hello
I will be installing waterborne underfloor heating throughout the house. But in the summer it won't be used, so there will be no heat in the bathroom.

I received the suggestion to skip the waterborne and instead install electric coils just in the bathroom. Then you can control it as you want and when you want.
The bathroom is located in the middle of the house with insulation both in the ceiling and the floor, so there won't be any direct cold coming from there. The floor will be raised with about 200 mm of insulation (the same as the other floors). At least 170 mm anyway. And the ceiling will follow the same principle. The walls are made of stone except by the door where a new wall will be erected.

The bathroom will be about 4 square meters.

 

[Jonatan79]

You need zero heat in the bathroom in summer...

 

[4321]

Add both?
I have water-based heating throughout the house, but in the bathroom with a stone floor, there is also electric heating so I can use the warmth in the summer (I think the stone floor is a bit too cool otherwise)

 

[Dr Benz]

You need zero heat in the bathroom in the summer…

Nah, I feel a bit like that too. We previously lived on a slab-on-grade but didn't have the electric heating on in the summer. So it doesn't seem like it's an issue.

 

[Dr Benz]

Install both?
I have water-based heating throughout the house, but in the bathroom with stone flooring, I also have electric so that I can use the heat in the summer (I think the stone floor is a bit too cool otherwise)

Yes, I've also considered that idea, but I think it might be overkill. The idea was also to avoid the thickness of the pipes. However, it's possible to make the battens a bit narrower since it's only 1.7 in length.

 

[EdwinG84]

Take a look at this LK Heater 350

 

[4321]

yes the thought has crossed my mind too, but I think it would be overkill. The idea was also to avoid the thickness of the pipes. But you can make the beams a bit narrower since it's only 1.7 in length.

Well, I wouldn't skip heating on a stone floor, but given the electricity prices, I wouldn't want electric floor heating all year round; I would opt for water-based instead. Now that I have solar panels, I can enjoy heating in the summer too. It's also worth considering that it dries up faster after showering, reducing the risk of slipping.

 

[Dr Benz]

Look at this LK Heater 350

It looked interesting but needs to be installed with a shunt. And I don't have one. But thanks for the tip.

 

[Dr Benz]

Well, I wouldn't opt-out of heating on a stone floor, but given the electricity prices, I wouldn't want electric floor heating all year round and would instead go for hydronic. Now I have solar panels, so I can afford heating in the summer as well. It's also worth considering that it dries up faster when you've showered, thus reducing the risk of slipping.

Yep. The drying is also a factor. But with proper ventilation, it should be okay. Of course, it doesn't replace it, but the floor will probably dry faster anyway than if there's a mass of moisture in the air in the bathroom.

 

[MathiasS]

Just continue circulating water in the gv system during the summer (with the heat turned off) and you'll get a base heat that keeps the floor from feeling cold, even if you have tiles. I heat the entire basement this way in the summer.

 

[Dr Benz]

Just keep circulating water in the floor heating system during the summer (with the heat turned off) and you'll get a base warmth that keeps the floor from feeling cold, even if you have tiles. I heat the whole basement this way in the summer.

Ah. Really smart. Could it be that floors that get a lot of sun during the day can heat the loops and thus bring the warmth into the system and later even it out with the other loops. Similar to an HRV unit with air?

 

[MathiasS]

Ah. Really smart. Can one imagine that floors receiving a lot of sun during the day can heat the loops and thereby pull the heat into the system and later even it out with other loops. Like an HRV unit with air?

yes, that's how it works for me at least.

if you want a warm bathroom floor it's not enough, but if you're satisfied with not having an icy cold floor, it works.

 

[Dr Benz]

yes that's how it works for me anyway.

if you want a warm bathroom floor it's not enough, but if you're satisfied with not having a really cold floor then it works.

Totally fine to avoid the really cold. Thanks!

 

[kniv]

I have both water and electricity in the bathroom, both embedded in leveling compound with 10mm tiles on top. I haven't actually needed to turn on the electric coils during any summer... The tiles haven't felt cold, and I haven't had any issues with drying, I have a Pax fan and a bathtub. The bathroom is located in the middle of the upper floor, a single-story house with a basement.