An innerspring or hybrid mattress makes noise mainly because its steel coils rub against each other or against the frame, and worn coils squeak as they compress under weight.
Mattress noise
Why does a mattress make noise?
Interconnected coil grids carry the most noise, since one flexing coil moves its neighbors. Individually pocketed coils in a hybrid mattress stay quieter because each one compresses on its own. As coils fatigue with age, the squeak gets louder. An all-foam mattress has no coils, so most of the sound a bed makes comes from the frame instead.
- An all-foam mattress has no coils and contains no metal parts that can squeak.
- An innerspring mattress rests on an interconnected coil grid, the construction most prone to squeaking and motion noise.
- A hybrid mattress pairs individually pocketed coils with at least 2 inches of foam comfort layers, which dampens sound.
- Pocketed coils compress independently, while a connected innerspring grid moves as a single unit.
- Squeaking tends to worsen as coils fatigue, one reason buyers ask how often a mattress should be replaced.