Damaged collar

I recently attended a chimney sweep in Minehead where the collar of the stove had corroded due to water ingress from a damaged chimney. Work to fix the chimney had already been carried out. The collar had rusted and broke where it is secured to the top of the stove, this meant if they had continued to use the stove, it could have leaked harmful carbon monoxide gases into their house.

Removing stove for repair

The stove itself is still in good condition, so I recommended the customer source a new collar. The liner in this property had been in for 17 years, so I advised a new liner be fitted at the same time.

We arrived at the property and started the job by detaching the liner from the stove. This proved a little bit more tricky as the liner had been cemented in at the top. Fortunately this was only at the top and not all the way down as I have seen in previous installs. There was also very little room for movement at the bottom due to the construction of the chimney. We cut out the old vitreous pipe (pipe that connects the liner adapter to the collar), this released the pressure on the stove and allowed us to pull the stove onto a platform ready for the collar repair.

New liner and collar install

Removing the old collar, we fixed the new collar using new nuts and bolts as the old ones had rusted. We sandpapered any residue rust from the area so we could ensure a tight seal around the bottom of the collar. A new 6″ liner, 6″adapter and a new pot hanging cowl was installed. Finishing off the job using a vitreous pipe cut to the correct size, using fire cement to seal it in place we slid the stove back into place. A carbon Monoxide detector was fitted to the wall as per building regulations.