A sadhu board in a studio gets used in a way a home board never does. Multiple students per session, multiple sessions per day, sometimes wet feet from a humid room, sometimes class participants new to the practice and unsure how to step. Studios that introduce sadhu boards thoughtfully build a long-lasting tool into the practice. Studios that introduce them without protocols often end up with worn-out boards in a year and an awkward conversation about foot hygiene.
This guide is for studio owners and teachers thinking about adding sadhu boards to the offering, written from years of supplying our boards to studios across Europe through our Kostopil workshop.
The two questions
Sharing a sadhu board between students raises two reasonable questions: is it hygienic, and how does the board hold up to heavy use? Both have practical answers.
Hygiene basics
A sadhu board is a hard, non-porous surface (sealed wood plus brass) that contacts the soles of clean feet for short periods. From a hygiene standpoint, it sits in a similar category to a yoga prop like a block or a wall — a surface that should be wiped between users but does not require sterilisation.
Common-sense studio hygiene applies:
- Students wash or wipe their feet before stepping on the board. A small bowl of clean water and a towel at the practice spot is enough.
- The board surface is wiped between users with a slightly damp microfibre cloth.
- The brass nails are wiped with the same cloth. Brass is mildly antimicrobial — copper alloys naturally inhibit bacterial growth — which is a small but real bonus for shared use.
- Students with active foot infections (athlete's foot, plantar warts, open cuts) do not use the board until cleared. The teacher checks gently and asks.
Disinfecting wipes containing alcohol can be used occasionally but not at every wipe. Alcohol slowly dries the wood finish. Once a day at the end of the day is enough.
The end-of-day routine
At the end of each studio day:
- Wipe each board with a microfibre cloth dampened with water and a drop of dish soap. Both faces, edges, nails.
- Dry immediately with a clean cloth.
- Once a week, wipe each board with an alcohol-based disinfectant cloth, then dry immediately and let air dry for a few minutes.
- Stand the boards upright in a ventilated rack overnight. Air circulation prevents moisture buildup.
Maintenance schedule
Home boards get oiled twice a year. Studio boards need more attention because they see more handling and wear.
- Inspect every board weekly: nail check, flatness, finish condition, any loose nails.
- Oil every board every three months.
- Re-oil specific zones (high-wear arch areas) as soon as the surface starts to look dry — usually every six weeks for a busy studio board.
- Full refinish every 2-3 years if cosmetic appearance matters, or never if you prefer the lived-in look.
Maintenance is a teacher's job. Building it into the closing routine prevents board degradation that compounds over time.
Storage in a studio
Studio rooms run humid during classes and dry between them. This swing is harder on wood than steady humidity at either end. The fix is to store boards in a ventilated rack outside the practice room, in a corridor or storeroom with stable humidity.
A simple vertical rack with slots takes up little floor space and lets all boards air-dry between uses. See our balance board storage guide for the moisture principles.
Protocols for new students
A first-time student stepping onto a sadhu board needs guidance. Not because the practice is dangerous, but because the first stand is intense and the natural reaction is to step off awkwardly, which is the moment falls happen.
Standard intro:
- Show the student the board on the floor. Let them touch the nails with a hand first.
- Have them step on with one foot, holding a wall or a stable support.
- Slowly transfer weight to that foot. Hold for a few seconds. Step back off.
- Repeat with the other foot.
- Only after both feet are tested do they stand on the board with both feet, still holding the support.
The full first stand is no more than fifteen seconds. Build from there over weeks.
How many boards for a class
Sadhu work is rarely a whole-class practice. It is more often a station within a longer class, or a small-group offering of three or four students. For station use, one or two boards is plenty — students rotate through. For dedicated sadhu classes, one board per student up to about six students works well.
Sharing one board between many students with proper hygiene protocols is fine. Trying to run a twenty-person class with one board causes long waits and rushed practice.
Sizing for studio boards
Studio boards should accommodate the widest range of foot sizes that walk through the door. A medium board with standard nail spacing works for most adults. Avoid the extremes (very narrow nail spacing for beginners or very wide for advanced) as your standard studio offering — they are good as additional options but not as the first board.
A few studios stock two boards: one beginner-spaced and one standard. Students choose based on experience. This works well and adds maybe twenty percent to setup time.
The teacher's own board
If you teach sadhu sessions, you should have your own board at home. Your own practice tells you everything you need to know about what students are experiencing, how the board behaves through humidity changes, what wears and what does not. There is no substitute for being on the wood every day.
Browse the full tool collection when you are ready to set up a studio, or message us through the about page for bulk pricing on studio orders. We have supplied studios from Berlin to Vilnius and can advise on the right mix of boards for your specific class style.