What a maintenance visit covers
A maintenance check covers pointing, flaunching, pot condition, flashing and general structural condition, catching the small issues that are quick and cheap to fix before they develop into bigger problems.
How often it's needed
Most Bristol chimneys benefit from a check every couple of years, though older or more exposed stacks — particularly on hillside properties — can benefit from more frequent attention.
The cost logic
A maintenance visit costs a fraction of an emergency repair, and catching failing pointing or a cracked pot early is almost always cheaper than waiting for it to cause a leak.