Chimney Rebuilds

Chimney Rebuilds in North Walsham

Chimney stacks take more punishment than any other part of a house. They sit exposed above the roofline through every frost, gale, and wet Norfolk winter, and the brickwork, mortar, and pointing deteriorates over decades. When a chimney needs rebuilding, it's usually because the mortar has eroded to the point where individual bricks are loose, the stack has developed a visible lean, or persistent damp through the stack is getting into the rooms below.

A chimney rebuild involves carefully taking down the stack brick by brick from the point of failure — which may be from the lead flashing level, or from just below the pot if the problem is confined to the upper section. We re-lay the brickwork using a lime-based mortar mix appropriate for the original build, re-bed or replace the chimney pot and flaunching, and fit new lead flashings and a damp-proof course where required. Where a chimney is no longer used, we can install a capped ventilated terminal in place of the original pot to prevent moisture build-up inside the flue.

Chimney work at height is not something to attempt without scaffolding and experience. Poorly rebuilt stacks with incorrect mortar mixes or bad pointing are one of the most common causes of repeat water ingress we see in North Walsham. Using the right mortar strength matters — too hard and the pointing cracks with thermal movement; too soft and it erodes quickly.

We erect our own scaffold, obtain any necessary permits, and work methodically from the top down. A standard chimney rebuild from the flashing level typically takes two to three days. We photograph the stack before, during, and after the work for your records.

Rebuilding a chimney stack from lead flashing level in North Walsham typically costs between £1,200 and £2,500 depending on the height, number of flues, and extent of the brickwork requiring replacement.