# Securing pianos and grands: climate, lock, and the lid that stays open

> Secure a grand: steady humidity and temperature, not on the outside wall, insure scores and instrument apart.
> Quelle: https://tresorrari.de/artikel/klaviere-fluegel-sichern · Stand: 2026-10-01 · Tresorrari Redaktion

A grand is a room. It goes out of tune with every jump in climate, and it warps the wood when the heating bakes it from one side. In the overview [Security for collectors](/artikel/sicherheit-fuer-sammler) it is the largest object this world still takes seriously. Carrying it off in one night is rare. Spoiling in winter is the rule if it stands against the wrong wall.

## What breaks without a thief

Dryness, damp, direct sun, a window that drafts onto the lid. You do not put it against the cold outside wall, and not over the heating. You have it tuned on a rhythm the condition sets, not only when a key sticks.

## When someone comes

The instrument stays. Sheet music can be taken along. A small signature on the lid is no reason to leave the lid open toward the street. The apartment door secures the grand. Very valuable instruments need a policy that names the piece, and a photo of the number in the cast frame.

## The folder

Maker, number, year, proof, last major work. You photograph the number once, while you can still find it.


## Häufige Fragen

### Against the outside wall?

No. Climate from two sides puts it out of tune and warps the wood.

### Lid open toward the street?

That way you show the instrument. Closed, when you are not playing and the street looks in.

### Scores as well?

Their own list. Valuable manuscripts have their own text: [Music manuscripts](/artikel/musikhandschriften-sichern).