Water hammer

Bang or clang sounds when fixtures close indicate shock waves in the piping.

Try this first (5-minute fix)

1. Replace slow-close valve or faucet cartridge.
2. Add or recharge water hammer arrestors; secure loose pipes.

Decision tree

1. Replace slow-close valve or faucet cartridge.
2. Add or recharge water hammer arrestors; secure loose pipes.
3. Check pressure regulation and expansion tank.

What it might be

Metro Vancouver homes face heavy rain, mixed housing ages, and evolving code requirements. This guide focuses on safe, practical steps you can do with basic tools, and it highlights where a licensed plumber is the right next move. Metro Vancouver homes face heavy rain, mixed housing ages, and evolving code requirements. This guide focuses on safe, practical steps you can do with basic tools, and it highlights where a licensed plumber is the right next move.

When to call a plumber

If hammer coincides with pressure spikes over 80 psi or repeated appliance failures, book service.