If an old VHS or camcorder tape looks mouldy, do not play, fast-forward or rewind it to test the recording. Keep it separate from the rest of your collection, avoid unnecessary handling and seek advice from an audiovisual preservation specialist before arranging a transfer.
Does a white mark mean the tape is mouldy?
Not necessarily. A white deposit or fuzzy growth is a warning sign, not something that can be identified reliably from a brief description. The US National Archives advises contacting an audiovisual preservation specialist if either is visible on magnetic tape.
Do not open the cassette, touch the tape or try to scrape a mark away to investigate. Record what you can already see and any known storage history, such as time spent in a damp garage or loft.
Why shouldn’t I put it in a player?
Playing a suspect tape is not a safe condition test. The National Archives advises against playing tapes with visible dirt or debris without specialist guidance.
The Canadian Conservation Institute also warns that a mouldy tape can contaminate playback equipment and potentially other tapes. A player that accepts the cassette does not establish that the recording is safe to run.
If you have already tried playback, mention that when seeking advice, including whether the player was then used for other recordings.
Can I clean the tape myself?
Leave treatment to a suitably experienced conservator or audiovisual preservation specialist. Do not copy a cleaning demonstration, apply household cleaning products or put the cassette in a freezer or oven.
The Canadian Conservation Institute discourages freezing magnetic recordings and explains that treatment of damaged tapes can be complicated and unsuccessful. Its discussion of specialist processes is not a home-cleaning recipe.
Ask the specialist what assessment is needed, how the item should be contained or transported and whether a transfer is feasible afterwards. Neither cleaning nor digitisation can guarantee that damaged footage will be recovered.
What should I say when asking for advice?
Prepare a short note covering:
- the cassette format or visible markings;
- what you noticed, without opening the cassette;
- whether it has been wet or stored somewhere damp;
- any attempted playback or cleaning; and
- how important the recording is and any deadline.
Keep identifying labels and cases associated with the tape. Avoid mixing suspect items into a batch of apparently clean tapes.
Can Rewind Digital convert a tape in this condition?
Rewind Digital’s standard VHS and VHS-C conversion service is not a mould-removal, repair or specialist-recovery service. Condition and compatibility must be checked before any work is agreed.
Send a request describing the condition before arranging a Tadcaster handover. Do not bring a suspect tape to an appointment without discussing it first. Specialist advice or treatment may be needed rather than an ordinary conversion.
For other supported tapes, the published prices provide a starting estimate, not a quote for mould treatment. No payment is taken through the website request form.
