crack in the tub

I also have a technical question: What happens if, due to excessive heat the wood happens that a horizontal crack appears in the floor of the tub? Is this repairable in a manner or another? Please let us know.

(here below we are reporting extracts of the full correspondence for your reference)

About the the horizontal crack: please send me a detailed picture.
Is it in the joint between planks or in the middle of a plank?
How long/wide is it?
Do you think it leaks water?
when did it appeared?
Did you leave the tub dry for long periods?
Once we see the picture we will be able to give you better advice.

Concerning the crack, I went back to the site this morning and took some shots I am sending to you herewith.
To answer your questions:
– it seems to me that the crack is between two planks
– it is the total width of the tub’s bottom floor
– it is something like 1mm to 1,5mm wide
– yes, it leaks water unfortunately
– it appeared to us two days ago
– yes we left the tub dry sometimes, and moreover, a week ago we put in service a floor heating that is underneath the tub but also around it. It might have dried the air in the room. Added to a very warm summer here.

Timing of that problem is quite bad since we were ready for handing over the project to the owner client the 1st of september.
Thank you for your advice.

I see: the problem is definately the floor heating.
In general every heating system in the bathroom is bad for the bathtub. It dries up the wood especially if it runs for many hours a day (like central heating systems).
Of course it depends also on the width of the bathroom and height of the ceiling, in any case, we recommend to keep an hygrometer in the bathroom and check regularly.
Floor heating is even worse for the wood tub because the heat tends to concentrate towards the floor and the humidity is washed away systematically as hot air moves upwards.

I recommend to use an underwater epoxy sealant. It should be pushed into the crack with a spackle, to fill it up completely. You may finish the last 1mm with underwater epoxy putty which has a color similar to wood. I could sent you this material by EMS mail but it takes over a week (now customs are full because of holiday period tail).
If you need to repair before sept.1 , try to look for this material locally and let me know if you have problems.

Also, remember not to use the heating when the tub is empty. If you need to, fill the tub with 10cm of water and use the heating without fear.

Thanks for your detailed answer.

I think it would be wiser if you send me the underwater epoxy sealant, and the underwater epoxy putty, that you have already used, and that has already given good results.
If you can do it as soon as possible, and send me the invoice for immediate payment, I would appreciate it a lot.

I checked with my carpenter and he recommends no putty, just make the epoxy fully penetrate. It has a greish color.
after it is dry, you can sand or plane it.
This morning we sent you an EMS parcel. Please let me know if you could fix the problem.

Thank you very much for your product. We received them last wednesday, and the result seems good for the moment. No more leaks!
From the aesthetic point of view, the repair is ok. Sure the color is grey and you can see it if you know it is there, but it is not shocking at all. I will send you a photo tomorrow.
We have not used the hiba oil on the tub yet, but it smells so great in the water.

Knotty hinoki tub in stock (sold out)

We have a beutiful tub in knotty honoki wood and are giving it away at bargain price:
Please find below a quote for a L1300mm x W700mm x H600mm (external
dimensions) 520mm(depth) natural hinoki bathtub with ledge type frame at short sides:
(See enclosed pictures and pdf drawing)

Click the thumbs below for a larger image.

* * * Sorry, sold out! * * *


Japanese bath

soaking tub

1) K grade tub (knotty) : (was 5200 US$) ->3600 US$ (1600 US$ discount!)
2) Packaging: 1450x850x800 wood box: 340 US$
3) Transport: I will ask for a quote for delivery at your door. Please specify also if you are in a hurry (air freight) or you can wait at least 30 days (ocean freight)
The tub is new, it was never used, it was displayed in our “showroom” and was wrapped all the time in plastic sheet.
Of course, we can ship world-wide.
Payment conditions: 100% prepaid
We hope you will appreciate this offer and welcome any question you may have.

reference from england 2

I can recommend Bartok Design without reservation. Although the relevant construction project is still underway and I have not used the recently-ordered tub, I have seen it and the workmanship looks excellent. Having lived in Japan, I believe that your client is best served by a hinoki tub, instead of a locally sourced alternative. In our experience, Bartok Design were very co-operative, communicative and easy to work with. Let me know if you require any further information.

hinoki tub for Geneve

Japanese soaking

We had some communication problem in the beginning because some mails were captured by the spam filter .
Anyway, once found the problem everything proceeded smoothly and we could ship this hinoki tub, custom size sunoko and accessories in record time.

Every detail such as tub size adjusments, wall joint, floor duckboard modular units were agreed together with the client.

reference from england 1

We just recently acquired the bath from Bartok for a new country house and consequently we have not yet used it, but I have had one in London since about 1995. Mine also came from Japan, from a maker called Kodai (as in, “past era”) who sadly seem themselves to have been consigned to the past, as they appear no longer to be in business.
We found Iacopo and Bartok on the web. He was much less expensive than local tub manufacturers and offered a genuine hinoki product constructed the traditional way, so we did no further comparison shopping. Having seen the tub, I can strongly recommend him. Also, he was very helpful and communicative, which is important because your builder likely will be unfamiliar with the idea and will need information and reassurance. He also sorted out the shipping, so this presents no big obstacle compared to local
My experience with the tub in London might not be representative, because I am there less than half the time and the tub is used only occasionally. As you might know, this is in some ways more wearing for the tub than continuous use, because it is usually quite dry. I think the average life expectancy is about 10 years, but after several years past that, mine still is in good shape.
I think the most important thing is to put the tub in a “wet room” because it will “weep” and the water should be collected and drained. This will enable a proper bathing experience anyway, because you can have showers and taps in the room but outside the tub, as in Japan.
I also strongly recommend incorporating a recirculation system so that you can keep the water hot.
So, you can see that the builder has to be familiar with the concept of a wet room (this is becoming fairly standard technology) and has to know a bit about spa recirculation systems.
For cleaning, Kodai supplied a solvent containing tree oil, which i quite liked, but with their demise I have not been able to find a similar product.
Absent this, when i empty the tub, I wipe it with a towel (no cleaning products) and sand it occasionally. This seems to work well.
My tub is in a reconstructed pre-Victorian house, and i just leave the sash window to the room slightly open. No special ventilation measures.
I hope this helps. I strongly recommend you get the tub and hope you enjoy it.

Wood bath-tub installed in Prague

hinoki ofuro

Our client was so kind to send us the photo of installed asnaro bathtub so we are glad to publish it here!
The asnaro wood paneling creates a warm atmosphere, a kind of “other world”, a natural corner.

I am sure here you can forget the cold of central european winters and re-energize body and mind…

I think the local contractor made a great job and the spout was partially recessed inside the wall as planned. Afterall no matter how our cultures may be different, working with wood and loving wood is definately a common heritage.

wabi sabi (II) – tub setting

The tub has been mounted, around is a wide hinoki duckboard.
The stone floor, the ceiling beams…
I can see everywhere passionate details and feel a magic atmosphere…
I am really overwhelmed by the emotions looking at these pictures.
It is central Italy but really feels like Edo period Japan. This is not just because the materials are original, but because the spirit, the concept of the project is authentic.
In the end, when man respects nature and put care and love in his acts, even different cultures touch and become one. I am sure that people entering in this ofuro will understand something more of the real essence of humanity.

hinoki tub for seattle

wood tub

The wood for this tub was set aside last year, while the client`s house was still on the architect`s drawings!
We kept in touch with them every while and then to adjust the sizes or just for the season`s greetings: I never met the client in person but almost feel like old time friends. I am almost sorry to see the tub go but – who knows – I may visit one day!

Japanese ofuro bath

Grade AB Hinoki bathtub L1300mm x W750mm x H660mm with japanese style tub cover and other accessories.
Considering the long humid season of the pacific coast, the hinoki was upgraded to all quarter sawn lumber. Note the soft parallel lines and the pale pink color…

asnaro tub for singapore

wood ofuro

A squarish (900 x 1000mm – internal dimensions) ASNARO-HIBA tub.
It has a top frame (100×50) and joints are finished with wooden plugs.

Two low benches can be used as a step to get inside or to relax after the bath (this hot-tub is located on a terrace and I guess that the view is stunning!)

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