Pipe clearance for movement
50 mm
When a pipe passes through a structural element, it typically requires a minimum 50mm annular space around it to allow for movement and prevent stress transfer
When a pipe passes through a structural element, it typically requires a minimum 50mm annular space around it to allow for movement and prevent stress transfer. This clearance helps protect the pipe from damage due to structural settlement or expansion.
Basis in regulation
How to check it on site
Ensure that the specified minimum 50mm clear space is maintained around the pipe where it penetrates a structural element.
Common failure
Insufficient clearance around pipe penetrations often results in pipes cracking due to differential movement between the pipe and the structure.
Last updated 23 August 2026. This is our editorial summary of publicly available regulation, not building control approval or a warranty determination.