Alternative to Electric In-floor Heating for Walk-in Shower

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Old 08-06-19, 10:00 AM
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Alternative to Electric In-floor Heating for Walk-in Shower

Its been a while since I posted here, but I'm back with a bigger old house renovation. Wasn't sure if this should go under forced air or electric heating.

I am looking for an alternative to using electric in-floor heating for a walk-in shower, 4ft x4ft x 10ft talk, will be floor to ceiling stone/tile, two walls are exterior (1940's 2x4 construction).
Currently stripped down to studs, floor is 6" concrete with full access basement.
The bathroom has one heating duct but it is not near the shower, and the plan is to have a glass door for the shower.

Based on what I've done in the last and what I know exists (I'm not a hvac guy), in-floor electric would be really my only option for keeping this shower warm.

This region has a swing temperature of -40'C to +40'C.

Is in-floor electric heat my only option?
 
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Old 08-06-19, 10:43 AM
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You're talking about heating in the part of the floor that is not part of the shower..... correct ?
6" concrete floor is not going to be very conducive to in-floor heating.
What are your plans for a floor finish ?
 
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Old 08-06-19, 11:00 AM
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Sorry, I should have been more clear on this.

Looking to heat the shower floor. The rest of the bathroom should be covered with an HVAC vent exiting.
The whole main floor of this house is concrete with full basement under it. The shower is going in an area I need to level off, so with the rest of the room so I have a chance to add heating near the surface.

I've attached a quick sketch of the room. The red arrow is the existing heat vent in front of the window. Shower is marked.
Drawing is not to scale of course.

Right and bottom of the area marked as 'Shower' is exterior
 
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Old 08-06-19, 11:17 AM
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Ok.... so you want radiant floor heating inside/under the shower area.
That is not something I've ever done before.
 
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Old 08-06-19, 11:30 AM
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I'm thinking I maybe stuck using electric in-floor as I can't see having a vent in the room as a good idea. Despite my poor drawing, There wouldn't be enough room to have the door to the shower open when not in use as the entrance is on the left, in front of the shower.
 
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Old 08-06-19, 03:48 PM
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Is your basement finished and heated? If not then heating the floor in the bathroom is going to be very expensive as you'll be heating a big mass of concrete that is not insulated.
 
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Old 08-06-19, 03:52 PM
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You may have to use a wall mounted fan forced electric heater.
 
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Old 08-06-19, 03:54 PM
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Basement is unfinished in that part of the house, and is heated. Its the utility room /unfinished storage room.
With that said, this might get backburned again. Looks like the snow load damage is growing into code upgrades. I have a feeling the structural engineer watched way too many Mike Homes shows.
up side, my garage is being rebuilt with new foundation.
 
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Old 08-06-19, 05:11 PM
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Couple things to consider; I also installed a walk in shower about 6 years ago after a lot of airport stay overs due to international travel, it's one of the best improvements we have ever done!

You don't really need heat in the shower, and I agree have never heard of that, but once the warm water gets flowing that floor warms up fast.

Second, hold off on the door, none of the showers I visited had one and we didnt install either, the warm steam keep the shower warm and you eliminate the biggest mess in the bathroom, the wet door!
 
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Old 08-07-19, 05:21 AM
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Couple things to consider; I also installed a walk in shower about 6 years ago after a lot of airport stay overs due to international travel, it's one of the best improvements we have ever done!

You don't really need heat in the shower, and I agree have never heard of that, but once the warm water gets flowing that floor warms up fast.

Second, hold off on the door, none of the showers I visited had one and we didnt install either, the warm steam keep the shower warm and you eliminate the biggest mess in the bathroom, the wet door!
Will keep that in mind. Would be nice to have one less piece to have to clean in the house.

Going to keep poking at the bathroom design for a bit as I have to sit on my hands while dealing with the "Make it Right" engineer I'm dealing with on a snow load issue from this past winter. Will detail this issue in another post as the ~$100k job is now pushing $300k+ with this guy trying to bring everything in that area up from 1940's code to today's building code.
 
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