Material behind tiles in a sauna?

[wretan]

Yes, a sauna should be lined with wood on the inside and have good insulation and sauna foil behind the panel but if one has decided instead to have a tiled sauna, with wooden benches and backrests to avoid burning oneself on the surfaces of course, what material should be used behind the tiles?

From what I understand, plasterboard is not a good solution, but what else can be used? Is a wet room board or fiber plasterboard better, or should one even consider building up the wall with bricks to align nicely with the other walls (which will include studs+OSB+plasterboard)?

According to my tiler, there's nothing that works, but if you search online, you find lots of sleek saunas with tiled walls, how have they done it?

Anyone with thoughts on the subject?

Regards,
Johan

 

[wretan]

No one?

Yes, a sauna should be internally clad with wood and have both good insulation and sauna foil behind the paneling but if you have now decided that you want a tiled sauna instead, with wooden benches and backrests to avoid burning yourself on the surfaces, of course, what material should you use behind the tiles?

From what I understand, gypsum is not a good solution, but what else can you use? Is waterproof board or fiber gypsum better, or should you even aim to build a wall and align it nicely with the other walls (which will be framed+OSB+gypsum)?

According to my tiler, there is nothing that works, but if you search online, you will find plenty of nice saunas with tiled walls, how have they done it?

Anyone with thoughts on the subject?

Kind regards, Johan

 

[Tomture61]

https://www.kakelspecialisten.se/ka...ag-ha-foer-underlagom-jag-vill-kakla-i-bastun

 

[nino]

Lux panels or similar would be what I would have used, seal the joints between the panels and the floor/wall angle.
Then you can also get a vaulted ceiling if you want.

 

[wretan]

Lux panels or similar I would have used, seal the joints between the panels and the floor/wall angle.
Then you can also get a curved ceiling if you want

Thanks for the tip about the Lux panel, I'll have to look more into it and contact the manufacturer about suitability. You don't want the sauna section to move differently from the remaining areas, I think there could be a risk of cracks in the waterproofing layer or even the surface layer in the worst case.

 

[wretan]

[link]

Thanks for the link,

According to Kakelspecialisten, there doesn't seem to be any really good solution to this, but the main problem seems to be the direct heat radiation from the heater, which can be solved with a heat shield. I'll call Tylö and see if they have any tips.

 

[TheGame]

I think as long as you have some form of heat protection, it shouldn't be a problem.
But some.form of heat protection is usually standard to have.
Either on the unit itself or mounted on the wall.

 

[Nikorasu]

Here's what I did in the same situation, after a bit of research. I have a "niche" where the wood-burning stove will stand - 2 sides sauna wall, 1 side partition wall towards the benches.

* Walls = Masterboard on battens (after calling 3 manufacturers, it turned out MB was the only board that could withstand sauna heat over a long period. Purchased at Bauhaus.)
* Sealing gaps Masterboard with fire sealant
* Floor = floor chipboard, electric floor heating (not directly under the stove), floor leveling compound, waterproofing membrane with 10 cm upturn
* Tile adhesive = Kiilto Highflex S2 DF, no primer on Masterboard
* Tiles = 10mm soapstone
* Stove stands on radiation protection towards the floor (3mm stainless steel plate, creates a 70mm air gap)

I believe it will be durable and quite fire safe, but I have no conclusion from use yet.

 

[wretan]

Great answer, many thanks for this!

Masterboard seems to be the solution. How long has it been installed at your place? Used the sauna much?

Best regards, Johan

Here's how I did it in the same situation, after a bit of research. I have a "niche" where the wood heater will stand - 2 sauna wall sides, 1 partition wall against benches.

* Walls = Masterboard on sparse (after calling 3 producers, it turned out MB was the only sheet that withstood sauna heat for a long time. Bought at Bauhaus.)
* Joint gaps Masterboard with fire sealant
* Floor = floor particle board, electric underfloor heating (not directly under the stove), floor leveling compound, sealing membrane with a 10 cm upturn
* Tile adhesive = Kiilto Highflex S2 DF, no primer on Masterboard
* Tiles = 10mm soapstone
* Stove stands on radiation protection to the floor (3mm stainless steel sheet, becomes 70mm air gap)

I believe it will be durable and quite fireproof, but have no conclusion from use yet.

 

[wretan]

Yes, that is my thought as well, most electric fireplaces usually have some form of radiation protection directly at the back, right? The wall above gets warm if the fireplace is wall-mounted, but that's almost unavoidable. It would look a bit strange with a separate radiation shield, like stainless steel, behind and a bit up on the wall behind the fireplace.

Best regards, Johan

I think as long as you have heat protection, there is no problem. But some form of heat protection is usually standard to have. Either on the unit itself or mounted on the wall.

 

[Nikorasu]

Awesome answer, big thanks for this!

Masterboard seems to be the solution. How long have you had it installed? Saunad a lot?

Best regards,
Johan

Unfortunately, I haven't got to that point yet - installed the tiles last week.

 

[TheGame]

Yes, that is my thought as well, most electric fireplaces usually have some form of heat shield directly behind them? The wall above will get warm if the fireplace is wall-mounted, but that's almost unavoidable. It would look a bit strange to have a separate heat shield, like a stainless steel plate, behind and up a bit on the wall behind the fireplace.

Kind regards,
Johan

Yes, a wall-mounted unit is very protected from radiant heat fundamentally as it is typically a metal box you hang up with space for some stone on top.
Free-standing units with "open stone magazines" usually have it as an addition.

 

[Kalle_livelong]

This is what I did in the same situation, after some research. I have a "niche" where the stove should be - 2 sides are sauna walls, 1 side is a partition wall towards the benches.

* Walls = Masterboard on battens (after calling 3 manufacturers, it turned out MB was the only board that could withstand sauna heat for a long time. Bought at Bauhaus.)
* Sealing gaps in Masterboard with fireproof sealant
* Floor = chipboard flooring, electric underfloor heating (not directly under stove), floor leveling compound, waterproof membrane with 10 cm upturn
* Tile adhesive = Kiilto Highflex S2 DF, no primer on Masterboard
* Tiles = 10mm soapstone
* Stove stands on radiation protection towards the floor (3mm stainless steel sheet, creating a 70mm air gap)

I think it will be durable and quite fireproof, but I have no conclusion from use yet.

Hi! Has it worked well for you?

 

[Nikorasu]

Hi! Has it worked well for you?

Yep, it has worked excellently. This is how it looked before the waterproofing and when finished.

 

[sjoerik]

[image] [image]

Yep, it has worked excellently. This is what it looked like before the waterproofing and when finished

Hi,
Is it still working well?