Understanding IP67 vs IP68 Ratings for Outdoor Installations

Why this topic matters & Core context

Ingress Protection (IP) ratings are the industry benchmark used to define how well a piece of hardware, such as a camera or junction box, resists environmental factors like dust and moisture. Choosing the wrong rating can lead to premature hardware failure, condensation inside your lenses, and costly repair bills.

In a professional UK installation, you must balance the manufacturer's specified rating with the physical location of the equipment. We always assess factors like prevailing wind direction, coastal salt spray levels, and potential for water pooling before selecting the appropriate hardware casing.

Deciphering the Digits: IP67 vs IP68

Technical standards dictate that the first digit represents solid particle protection, and the second represents liquid ingress. Both IP67 and IP68 share a '6' rating, meaning they are completely dust-tight, but the '7' and '8' denote vastly different water resistance profiles.

An IP67 rating is the standard for most robust outdoor cameras, designed to withstand rain and temporary water pressure. Conversely, IP68 testing is bespoke; the manufacturer defines the exact depth and duration, making it a critical requirement only if the device is intended for permanent installation in areas prone to seasonal flooding.

Best practice for UK exterior installations

Environmental shielding is often more important than the IP rating itself when installing in the UK. Even an IP68 camera can fail if the cabling is poorly terminated or exposed to capillary action, where water travels along the cable jacket into the internal electronics.

For optimal performance, I recommend using dedicated outdoor-rated junction boxes for all cable terminations. By ensuring your cabling strategy follows proper drip-loop techniques, you protect the camera’s internal components regardless of whether the chassis is IP67 or IP68 rated.

Video Walkthrough

Understanding IP67 vs IP68 Ratings for Outdoor Installations Comparison