Avoid: Avoid storing collections in basements, in attics, or near windows or exterior walls.

Block: Block incorrect RH with continuous vapour barrier in walls, roof, and floors. Install zoned RH control.

Detect: n/a

Respond: Provide a reliable HVAC system (desiccant systems must not be LiCl). Include back-up humidification and dehumidification systems.

Recover/Treat: Provide a conservation laboratory to treat damaged artifacts.