I'd already seen a missing brick in this chimney with a camera from the inside so I cut a hole in the top to access it for repair.  The missing brick enabled smoke  to leak through into a disused flue in a bedroom.  Replacement of the brick solved the problem.

A combination of not burning hot enough and a lack of sweeping enabled this liner to become tarred up to the point where it no longer drew properly.  (Photo courtesy of Dave O'Donnell)

As sweeps we come across many wooden lintels too close to fluepiupes.  This one had to come out and be replaced by bricks instead.

If you buy a cheap stove you can't expect quality - but nor do you expect the baffle plate to burn through like this.

The stain on the lintel tells us this chimney does not draw properly.  The opening is too large for the cross sectional area of the flue.

Damp in a chimney can bring tar though the chimney wall from the inside.

The flaunching at the top of chimneys erodes over time and needs replacing.

The mortar flashing on the side of this chimney has cracked away and now enables water to get down inside.