Bathroom layout 8.7 sqm, with shower and bathtub

Hello everyone,

I hope someone has a great idea for our bathroom floor plan. We are currently renovating our single-family house (built in 1950; basement, ground floor, upper floor) and find the layout on the 8.7 m² in the upper floor difficult. A small WC is planned on the ground floor. The bathroom will be stripped back to the shell and then rebuilt (plaster off, floor out). A underfloor heating system is planned (floor buildup approx. 9.5 cm). A pre-wall installation is desired. We want to do the bathroom ourselves. Unfortunately, window and door positions cannot be changed. No skylight is planned due to privacy reasons.

Room size: 8.7 m²
Location: upper floor
Knee wall height: 1.22 m
Distance to 2m line: 0.72 m
Room height: 2.40 m
West-facing window towards the garden

Client requirements
Number of persons: 4
1 toilet
1 bathtub at least 1.70 m long or corner bathtub if it fits, bathtub used approx. 5-10 times per year
1 shower, at least 90 cm in one direction, shallow shower tray (drain in the floor buildup), not necessarily level access, only shower in the house
1 washbasin
1 towel holder
1 laundry basket
1 shower towel holder (possibly towel radiator)
1 trash bin
Storage space for towels, etc.
1 mirrored cabinet
1 underfloor heating manifold (6 heating circuits)

The supply lines (underfloor heating, hot & cold water) come out of the floor on wall D (corner to wall A), where we also planned the heating circuit manifold. The drain should go through wall B (corner to wall A) into the cove and then into the WC below.

Design
Who designed the plan:
-Do-it-Yourself
What do you like particularly? Why?

What don’t you like? The shower is very difficult to place because, due to door, window and sloping ceilings, it does not fit into any corner. Since we are about 1.82 m tall and this will be our only shower, placing it under the sloping ceiling is not a good solution. The shower would have a lot of glass area to wipe in our current drafts.

If you have to do without, which details/features
-you can do without: rain shower, level-access shower
-you cannot do without:

Why did the design become what it is now? e.g.
Process of elimination in placing bathroom furniture. E.g. no bathtub in front of the window.

What is the most important/fundamental question about the floor plan summarized in 130 characters?
Do you have better suggestions for the arrangement of the bathroom furniture and the setup of pre-wall installations.

Best regards

First of all, a like for your many lines and information. This is almost a template for many who are somewhat careless there.

only shower in the house 1 sink

2 questions: is there another bathroom in the house? At least a toilet and sink? Where is the downpipe from the drain?

Otherwise, I find your wishes somewhat ambitious, the tub with minimum size for 5-10 uses, then it cannot be placed under the window, towel radiator... The heating circuit distributor cannot just be installed anywhere either. But I only just read that it should come on the left side of the plan.

Number of people: 4
1 toilet
1 bathtub at least 1.70m long or corner tub if it fits, we use the bathtub about 5-10 times per year
1 shower, at least 90 cm in one direction, flat shower tray (drain in the floor structure), not necessarily flush with floor, only shower in the house
1 washbasin
1 towel holder
1 laundry basket
1 shower towel holder (possibly towel radiator)
1 trash bin
Storage space for towels etc.
1 mirror cabinet
1 underfloor heating circuit distributor (6 heating circuits)

With this whole list and for goodness' sake: with 4 people I would rather opt for at least a bit more freedom of movement than the necessity for a laundry basket, which could also stand well somewhere else. Towels could also be stored in an emergency on a shelf above the door or in the wardrobe. If certain things absolutely have to be there, one should at least not use standing space for such frills. What use is something like that if you constantly bump into it?

Well, those were just some thoughts from me. Personally, I would then shower in the tub :)

I am making a suggestion for a somewhat softer and ergonomic layout so the bathroom doesn’t look too cluttered. Toilet near the drain, tub 90 x 160 may then be a bit deeper, airy shower without wall. Distributor moves into the continuous pre-wall, asymmetrical washbasin (unfortunately I only have a hard triangle), cupboards under the window. That’s how you imagined it too, right?

How about something like this?
Use a partition wall at the 2 m line and the space above the toilet and the sink for built-in cabinets?

How about something like this? A stud wall at the 2 m line and using the space above the toilet and the washbasin for built-in cabinets?

I actually think that’s quite nice, but it will get very tight with the toilet and washbasin.

I actually find it quite nice, but it will get very tight with the toilet and WT.

You could also turn the washbasin by 90 degrees and could then even install a 2-meter-high wall cabinet between the toilet and the washbasin.