Are all casts waterproof?
No. Some synthetic cast systems may use water-resistant materials, but the padding underneath and the clinical situation determine whether getting the cast wet is acceptable.
Why can moisture be a problem?
Trapped moisture can soften some cast materials, irritate the skin, create odour and affect the dressing or padding underneath.
What should you do before showering?
Check the instructions given by the treating team. If the cast must stay dry, use an appropriate cover and keep the shower as controlled as possible.
Can you hold the cast outside the shower instead?
This may work for some arm casts, but it can be awkward and does not remove the risk of splashing.
How long should the cast be exposed to water protection?
Keep exposure brief and practical. A cast cover is generally intended to protect during washing rather than prolonged water activity.
What should you check afterwards?
- the cast feels dry;
- the edges have not softened;
- there is no new odour;
- the skin around the cast is not excessively damp;
- the cast has not become loose or cracked.
Important: If the cast feels wet underneath, do not use heat such as a hairdryer to dry it unless specifically advised. Contact the treating service for guidance.
