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Chimney pointing on wide old Wingham chimneys: when to repair, when to leave

Wingham period cottages tend to have wide, tall, mixed-mortar chimneys. What re-pointing does, when it is worth doing, and when the fix is different.

The Wingham period cottage stock, particularly on the High Street CA stretch and around the market square, often carries wide-shoulder chimneys with mixed lime and cement-based mortar joints. The mortar goes long before the brick does. Deciding when to re-point and when to leave alone is a judgement call, not a formula.

What re-pointing actually is

Raking out the old mortar joints to a consistent depth (typically 15-25mm) and re-filling with fresh mortar that matches the original mix. On a listed-adjacent Wingham cottage, the match matters - lime-based on a lime-original, hydraulic-lime or cement-lime mix on a Victorian brick chimney.

When it is worth doing

• Joints have receded so far that water is pooling on the brick faces below - visible staining, moss, or wintertime frost damage.
• Mortar can be scraped out with a coin-edge push. Sound mortar resists.
• Loose or missing bricks around the pot base or at the stack shoulder.
• Chimney is on a listed or CA-visible elevation and the joint face is visibly failing from ground level.

When it is not the fix

• If the flashing at the roof line is what is leaking, re-pointing does nothing. That is a lead-work job.
• If the stack is out of plumb, the fix is rebuild the top few courses, not re-point.
• If the mortar looks aged but is sound to a coin edge, leave it alone. Over-pointing a sound chimney adds nothing and can trap moisture in soft brick.

What we quote for

Ground-visible re-pointing on lower chimney sections, single-stack pointing up to gutter line, ridge-adjacent re-point where scaffold is not required. Anything over 6m off ground, or requiring tower scaffold, is quoted with a scaffold sub-cost lined out separately. Flashing and lead-work priced under small roof jobs - typically the actual leak cause when a "chimney" is reported.

On listed cottage stack work: LBC from Dover DC may apply if the joint mix or the brick face is changing. Flagged at quote stage.