VHS tape is a magnetic medium — a thin polyester ribbon coated with metal oxide particles that hold your recording. Over decades those particles lose alignment, the binder absorbs moisture (sticky-shed), and the print-through of adjacent layers slowly ghosts the image. None of it makes a sound. The tape just quietly stops being itself.
How long do you actually have?
Under cool, dry, dark storage a VHS tape can stay watchable for 20–30 years. In a typical British loft — hot in summer, damp in winter — that figure collapses to nearer 10–15 years. Tapes recorded in the late 80s are, right now, past their design life.
The four failure modes
- Magnetic decay — particles lose alignment, so colour bleeds and the image softens.
- Sticky-shed — the binder absorbs water, the tape squeals and sheds oxide onto the heads.
- Mould — white fuzz that eats the coating and spreads to every tape beside it.
- Mechanical wear — stretched, creased or snapped tape from jammed decks and old players.
The cruel part is that the tape often looks fine right up until you play it. By then, every pass of the heads is taking information with it.
What to do
Don't play the tape to "check" it — each playback degrades it. Wind it once to check for mould and tangles, then store it upright, fully wound, in a cool dry room, and get it digitised before it goes through a deck again. A single clean transfer to a lossless file is the only real rescue.
