A piano is usually the most valuable and most fragile thing anyone asks us about, and the one item where a single mistake in storage conditions costs more than everything else in the apartment put together. Piano storage looks like moving a heavy piece of furniture, but under the lid sit thousands of moving parts, a thin soundboard that breathes with the weather, and strings under many tons of tension. That makes the instrument unusually sensitive to humidity, heat and sudden change, and also easy to protect once you know what matters. This guide covers the conditions a piano needs, how to prepare it, and what changes for guitars, wind instruments and audio gear.
Ordinary furniture is wood, screws and fabric. A piano is an acoustic machine built from materials that react constantly to their environment. The soundboard is thin spruce that expands and contracts with humidity, the hammers are covered in wool felt that absorbs moisture like a sponge, and the strings and tuning pins are bare metal that corrodes in damp air. Separately each part is stable enough; together they form a delicate system tuned to one balance.
Then there is the structure. An upright piano usually weighs between 180 and 350 kilograms, a grand more. All of that mass sits on a cast iron frame and reaches the floor through three legs or castors, so those few contact points carry an enormous load. Stand the instrument on a soft, uneven or damp surface and you get a distorted frame and repairs that are difficult and expensive.
This is why a piano is not handled the way a sofa is. You can keep it alongside the rest of your belongings in one of our self storage units, but the conditions in the space and the preparation of the instrument both have to be on a different level.
If you remember one thing from this guide, make it this: a piano is not damaged by a particular level of humidity or heat, it is damaged by frequent change between them. An instrument kept for six months at a steady 55 percent relative humidity usually comes out fine, while one swinging weekly between 35 and 75 percent develops cracks, tuning problems and mechanical faults, even though the average sounds reasonable.
The commonly recommended range for a piano is roughly 45 to 55 percent relative humidity at a stable temperature of about 18 to 22 degrees Celsius. In Israel the challenge is the coastal strip in summer, where humidity in an uncontrolled space climbs above 70 percent, followed by a winter of indoor heating that dries the air below 35 percent. A closed, shaded unit swings far less than a normal apartment, and climate control gives the instrument a steadier home than the living room it came from.
In damp air the wood absorbs moisture and swells. The soundboard crowns slightly, string tension rises and the piano starts to sound sharp. The felt on the hammers softens and expands at the same time, so keys stick, return slowly or feel heavy. Left long enough, rust appears on the strings and tuning pins, and that damage does not reverse on its own.
Most humidity damage develops gradually and announces itself before it becomes expensive. A musty smell when you open the lid, keys that stick or return slowly, dark spots on the felt and metal that has lost its shine all say the space is too damp. Lacquer that looks cloudy or feels tacky means the same thing.
Fix the room, not the piano. Open the cover, let air circulate and bring humidity down gradually with a dehumidifier rather than moving the instrument straight into a dry air conditioned room, because a sharp swing the other way is just as harmful as the damp. Once the environment has settled, book a technician to check the action and tuning pins.
The other extreme is equally dangerous. In sustained dry air the soundboard contracts and can crack, glue joints dry out and string tension falls, so the instrument sounds flat and dull. A cracked soundboard is one of the most expensive repairs in the piano world, which is why an uncontrolled dry space is no safer than a damp one.
Piano technicians agree almost universally that the real enemy is fluctuation. A space held steadily at 60 percent is usually kinder than one moving between 40 and 65 percent daily. So check that the unit is not against a sunlit exterior wall and that no open window lets in sea air. An inexpensive digital hygrometer beside the instrument gives you the real picture within a week.
The preparation is simple, and most of it is waiting rather than work. The order matters, because covering an instrument that has not been cleaned and dried traps exactly what you wanted to keep out.
An upright stays vertical at every stage, in transit and in the unit, and the critical detail is a completely level, solid surface underneath. A grand needs its legs and pedal lyre removed properly, and it travels and rests on a dedicated piano board with its straight side against it. That is equipment and experience work, and there is no good reason to attempt it yourself. Do not tune the instrument just before storage either: the move shifts the tuning anyway.
Most of what is true for a piano holds for smaller instruments too, with one advantage: a good case adds protection against dust and knocks and softens short term climate swings.
Acoustic guitars, violins, violas and cellos are built from thin wooden plates every bit as reactive as a piano soundboard. Before storage, slacken the strings a little without removing them, so the neck and bridge are not under sustained load for months. Wipe it down, store it in a hard case on a solid shelf, and keep it off the floor, where humidity is highest.
Brass and woodwind instruments need thorough internal drying before the case is closed, because saliva and condensation inside the tubing cause corrosion. Drums keep better with head tension slightly released and shells nested largest to smallest. For amplifiers, keyboards and pedals the rule is simple: remove every battery first.
Most of the damage we see in stored instruments comes not from an unsuitable unit but from a handful of habits that feel sensible at the moment of packing.
A piano can sit in a unit for months or years without harm, provided the environment is stable and the instrument was prepared properly. For a sabbatical abroad, a long renovation or a gap between homes, choose long term storage from the start rather than shuttling the instrument between temporary spaces. Every extra move is another chance of a knock and another climate change for the wood to absorb.
If the piano goes in with the rest of your home, as often happens during an apartment move in Tel Aviv, ask for it to be placed first and deepest in the unit so nobody has to shift it whenever a box comes out. When it comes home, give it two to four weeks to acclimatise before booking a tuning, and have the technician check the action and pedals at the same visit.
Storing a piano well comes down to three things: a stable environment, careful preparation that includes cleaning, drying and a breathable cover, and professional handling that prevents structural damage. Do those three and the instrument comes back after months or years exactly as you left it, needing one tuning once it settles in. Get in touch through our contact page and we will match a unit size and period to your instrument.
Not always, though it is clearly preferable. A good closed and shaded unit swings far less than a car park or roof space and suits a few months of storage. For a grand piano, for especially valuable instruments and for a year or more, climate control gives far greater peace of mind.
There is no built in time limit. A piano prepared properly and kept in a stable environment can stay for years, because what matters is the quality of the conditions, not the length of time. For very long storage, visit every few months, open the cover briefly for air and confirm humidity is in range.
No, and it is better not to. The move and the change of environment shift the tuning, so a tuning done the night before storage is wasted. The right moment is after the piano comes home and acclimatises for two to four weeks.
We strongly advise against it. The weight sits on very few contact points and the instrument is far less balanced than it looks. Beyond the real safety risk, lifting it incorrectly distorts the frame and damages the pedals and legs. Professional movers bring a piano board, straps and purpose built equipment, and this is the last place to economise.
Store the bench separately rather than on the piano, so there is no pressure on the lid and no scratching. Sheet music is as vulnerable to damp and mould as the instrument, so pack it in a sealed container with moisture absorbing sachets and keep it on a shelf.
Yes. You can insure your stored belongings with comprehensive cover that includes earthquake damage, so valuable instruments are protected for the whole storage period. The rate is 1.8 shekels per month for every 1,000 shekels of declared value, and the cover can be matched to what your instruments are actually worth.
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