Waterproof vs Traditional Casts
Understand water-resistant liners, what is truly 'waterproof,' and how to avoid skin irritation.
- Ask if your injury and swelling stage are appropriate for a water-resistant liner.
- If you have a water-resistant cast, rinse with clean water after swimming and let it drain fully.
- Dry with a fan and allow airflow; follow your provider’s specific instructions.
- Monitor skin for rash or itching—water-resistant liners can still trap debris.
- Bring your cast info to follow-up if you have concerns.
- Do not assume all casts are waterproof—most traditional casts are not.
- Do not soak a traditional cast in a bath, pool, or hot tub.
- Do not use heat to dry any cast.
- Do not keep a wet cast wrapped in plastic (maceration risk).
- Do not ignore persistent odor or itching.
1) Confirm your cast type (traditional vs water-resistant liner) with your care team.
2) If traditional: use a cast cover for bathing and avoid submersion.
3) If water-resistant: rinse after exposure, drain, and dry with airflow.
4) Check edges/skin daily for redness or rash.
5) Call if you develop worsening itching, odor, or pain.
- Skin rash, burning pain, drainage, or fever.
- Water exposure that leads to wet padding or softening.
- Cast cracking, loosening, or new hot spots.