Why are London homeowners adding salt walls to their saunas?
A Himalayan salt sauna is a traditional sauna with walls of backlit Himalayan salt bricks in place of timber cladding. Heated salt attracts moisture and releases negative ions into the air, and the room has a warm amber glow. Our Salte salt saunas start from £18,995 fully installed, excluding VAT.
The Himalayan salt sauna UK trend is not new. But it has accelerated sharply in 2026. More clients are requesting salt walls than ever before. And once you understand what salt actually does inside a heated sauna room, the reason becomes obvious.
This guide covers everything. What a Himalayan salt sauna is. What it costs. What the installation involves. And what real bespoke sauna London salt wall projects look like when they are finished.
What Is a Himalayan Salt Sauna?
Pink Himalayan salt is one of the purest natural salts on the planet. Rich in trace minerals. Visually striking. And when heated inside a sauna, genuinely functional.
When heat activates the salt, it attracts moisture from the air. This is called hygroscopy. As moisture condenses on the salt surface, ionisation begins. The salt releases negative ions into the sauna air. These ions are believed to target bacteria, dust particles, and airborne contaminants purifying the air in the room naturally.
The effect is noticeable. The air feels cleaner. Breathing feels easier. The warm amber glow of backlit salt panels creates an atmosphere that no timber wall can replicate.
For serious custom sauna design UK projects, a Himalayan salt wall is one of the most impactful upgrades available.
What did we build in Weybridge?
The most striking Himalayan salt sauna UK project we have completed is in Weybridge, Surrey.
The client instructed us to build a traditional sauna with one full Himalayan salt wall. During the design phase, that brief expanded. The final installation features three full salt walls not picture frame panels, but complete floor to ceiling salt brick surfaces on three sides of the room.
The ceiling and one remaining wall are finished in Thermo Aspen. The heater a HUUM CLIFF with Wi Fi connectivity sits directly in front of the door against the main salt wall. The view as you enter the sauna is extraordinary.
LED panels are installed behind the salt walls. The natural translucency of the salt bricks allows warm light to pass through, creating a soft, layered amber glow across the entire room. The effect at temperature is unlike any other sauna installation London or Surrey project we have built.
What Does a Himalayan Salt Sauna Cost in the UK?
Our Salte salt wall saunas start from £18,995 fully installed.
All prices exclude VAT. Builders' prep work is separate.
These prices include Thermo Aspen or Thermo Alder wall cladding on the non salt surfaces, a full salt wall on one side, a frameless glass door with vertical handle, a stainless steel Harvia Cilindro Tall heater with touch pad controls, LED strip lighting, and a Thermo Hygrometer.
For clients wanting two or three full salt walls as in the Weybridge sauna Surrey project pricing is on application. The material cost of Himalayan salt bricks increases significantly with each additional wall.
Why combine a Finnish sauna with salt?
A Finnish sauna installation with a salt wall gives you two complementary wellness experiences in one room.
The Finnish heat and Löyly produced by ladling water onto the HUUM or Harvia heater stones works alongside the ionisation effect of the heated salt. You get the deep cardiovascular and respiratory benefits of high temperature sauna bathing. You also get the ai purifying and skin conditioning effects of salt therapy.
This is why our Himalayan salt sauna UK range uses traditional Finnish heaters rather than infrared panels. The steam produced by ladling water onto hot stones activates the salt surface far more effectively than dry infrared heat alone.
What is the difference between a salt wall and a salt panel?
Most sauna companies offer a salt panel. This is a framed picture typically 600mm x 900mm containing backlit Himalayan salt bricks mounted on one wall.
Our custom sauna design UK approach is different. We design the salt as a structural wall surface. The salt bricks replace the timber cladding entirely on one or more walls. The result is a full immersion environment, not a decorative feature.
The health benefits scale with the surface area. One panel produces some ionisation. One full salt wall produces significantly more. Three salt walls as in the Weybridge sauna Surrey project produce the maximum possible effect within a residential sauna.
Can you add salt to an existing sauna?
You do not need to build a new sauna to benefit from Himalayan salt. Sauna renovation UK projects regularly include salt wall retrofits.
If your existing sauna has a solid timber framed wall in good condition, we can remove the existing cladding and install Himalayan salt bricks in its place. The LED backlight system is wired in behind. The frameless glass door and other surfaces remain untouched.
A salt wall retrofit as part of a sauna renovation UK project typically adds between £3,000 and £6,000 to the cost depending on wall size and the extent of the existing installation.
What should you ask an installer before you book?
Not every sauna installer near me search result will lead you to someone with experience of salt wall installations. This is specialist work. The salt bricks must be correctly bonded. The LED system must be properly waterproofed. The ventilation must account for the hygroscopic effect of the salt surface.
Before you book any sauna installation London or Surrey contractor for a salt wall project, ask these questions. Have they completed a full salt wall installation before not just a panel? Can they show you finished project photography? Do they produce ventilation calculations as part of the design package?
At The Sauna Company, every bespoke sauna London salt wall project includes full technical drawings, ventilation specifications, and a 3D visualisation for approval before any work begins.
What do clients notice?
Across completed Himalayan salt sauna UK projects, clients consistently report the same thing. The air quality inside the sauna feels noticeably different. Sessions feel longer and more comfortable. Skin condition improves with regular use.
The Weybridge project remains the most requested reference point. Clients see the photography, understand the concept, and want the same result in their own home.
Every custom sauna design UK salt wall project we build is unique. Every sauna installation London and Surrey build is constructed on site to fit the exact space available.
FAQs
What is a Himalayan salt sauna?
A sauna where Himalayan salt bricks replace the timber cladding on one or more walls, backlit with LED panels. Heated salt attracts moisture and releases negative ions into the air.
How much does a Himalayan salt sauna cost?
Our Salte salt wall saunas start from £18,995 fully installed, excluding VAT and builders' work. Two or three full salt walls are priced on application.
Is a salt wall better than a salt panel?
A salt panel is a framed feature, typically 600mm x 900mm, on one wall. A salt wall replaces the timber cladding entirely, giving a much larger salt surface.
Can I add a salt wall to my existing sauna?
Often, yes. If an existing wall is solid and in good condition, we can remove the cladding, install salt bricks and wire LED backlighting behind them. A retrofit typically adds £3,000 to £6,000, depending on wall size.
Does a salt sauna use an infrared heater?
No. Our salt saunas use traditional Finnish heaters, because steam from ladling water onto hot stones activates the salt surface far more effectively than dry infrared heat.
Book a free 3D sauna design consultation in London or Surrey.
Planning one for your own home? See our Himalayan salt saunas page for options and recent projects, or book a free design consultation and we'll talk through your space.