A plaster or fibreglass cast should normally be kept dry unless your clinical team has specifically told you that the material is waterproof.
A purpose-designed cast cover can help protect a lower-leg cast during showering. It should be fitted carefully, checked for a good seal and removed after washing.
Why does a cast need to stay dry?
Water can weaken some casts and can also leave padding or skin underneath damp. This can contribute to rubbing, soreness, odour and skin problems.
Can you shower with a cast?
Yes, provided the cast is protected appropriately and you follow the instructions given by the hospital or fracture clinic.
NHS hospital guidance commonly recommends using a purpose-designed cover to protect a cast from water.
How does a waterproof cast cover work?
A waterproof cover fits over the cast and forms a seal higher up the limb. The opening should sit against healthy skin rather than directly over the cast edge.
How do you put a cast cover on?
- Check the cover for damage before use.
- Open it carefully without stretching the seal more than necessary.
- Guide the cast fully into the cover.
- Position the seal on the skin above the cast.
- Check that material is not twisted and that the cover is not pulling painfully on the skin.
Should you use a plastic bag or cling film?
Purpose-designed covers are preferable. Some NHS plaster-care guidance specifically advises against relying on improvised plastic bags, bin liners or cling film because they may not protect the cast reliably.
Can you leave a waterproof cover on?
No. Remove it once washing is finished. Leaving a cover on can trap heat and moisture around the cast and skin.
What if the cast gets wet?
Contact the plaster room, fracture clinic or treating service for advice, particularly if the cast has become soft, damaged or wet underneath.
Do not use strong direct heat to try to dry it quickly.
What if water gets inside the cast?
Damp padding against the skin can cause problems, so seek advice rather than assuming it will simply dry on its own.
Shower safety with a leg cast
A cast can make balance more difficult. Use the mobility aids and safety advice you were given, and consider sitting to wash if appropriate.
Some NHS plaster-care guidance advises having another person nearby when bathing or showering in case assistance is needed.
A waterproof cover protects the cast from water; it does not change your weight-bearing restrictions. Continue to follow the mobility instructions given for the injury.
When should the cast be checked?
Seek advice if the cast becomes wet, soft, cracked, unusually loose or tight, or if you develop severe pain, numbness, tingling, colour changes, increasing swelling, burning or skin soreness.
Protect Your Cast
Explore waterproof leg cast covers designed to help keep lower-limb casts dry during washing.
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