Flue resurfacing and tile repair in Durrs

Offsets and how repair tools travel

Resurfacing tools are drawn through the flue from one end, guided along the passage. Offsets and bends affect how they travel and whether they keep even contact with the walls. The system's instructions describe how to work through them.

We look at the route before recommending resurfacing. A flue with sharp offsets may limit what the method can achieve. If so, we explain the limits and whether another approach suits the passage better, before the estimate is written. Where an offset hides part of the flue, the findings say so and the estimate reflects it.

Matching the defect to a repair route

The defect found in the flue decides the route, not a preference for one product. Here is how the main findings usually line up with the options we explain at the free inspection.

Where findings are mixed, the most demanding one usually decides. We explain that reasoning in the estimate, so you can see why one route was chosen over another and what it leaves untouched.

• A cracked tile near the top: local replacement
• Open joints with sound tiles: a joint repair method
• Joints and minor defects along the run: resurfacing, if eligible
• Missing, loose or badly broken tile: relining

Recording what was repaired in the flue

Once the work is done, you receive a written record of the work. It names the flue, the defects found, the method and product used and the sections treated. It also notes anything left for a later decision.

Keep it with your other chimney papers. A later sweep or inspector can see what was repaired and what was not, instead of starting from scratch. If you change appliances, the record shows what the repaired flue was planned for. It also names the curing guidance given and the date the flue may return to use.

Why the upper flue takes the most weather

The upper tiles and joints sit where rain, sun and wind reach them most directly. Water that enters an open flue runs down the inside and soaks the upper joints first. That is why defects near the top are common, and why they are often the easiest to reach.

We check the upper section closely on every flue assessment. Where the damage is limited to the top, a local repair may be enough. Where it continues downward, the estimate explains how far and what that means for the method.