Our client’s house has a thatched roof covering. We only recommend the Schiedel Isokern pumice product in these situations because as well as its longevity and durability it has excellent insulation value. The insulation is important because this keeps the inside of the flue hot and efficient and at the same time prevents undue heat transfer into the adjacent structure. Other flue lining materials such as flexible steel and the resin linings such as Furanflex have very little or no insulation value at all. Whilst flexible steel can be wrapped in an insulating blanket this is not as robust or consistent as the factory made pumice liner surrounded by leca (light expanded clay aggregate). Furanflex has no insulation value at all.
To install these liners requires the construction of a structural register plate and it is this that supports the liners and leca. Within the register plate is a purpose made adaptor that connects the stove flue pipe to the pumice liner. The liners are then put into position through access holes made in the chimney breast or outside wall depending on the flue position within the house, all disturbed areas made good and internally left plastered ready for decoration by others.
The inglenook fireplace had a Jetmaster stove installed within a brick surround. It is likely that this was chosen because the fire would have spilt smoke and fumes with such a large fire opening and a relatively small flueway. The client wished to remove the Jetmaster and brickwork and restore the inglenook to its former glory. The rear of the recess had been plastered and painted.
The client had chosen a Dovre 2000 stove with up to 11kw output and with a suitable hearth already in place.
The Billings team removed the old Jetmaster and brick surround and set to work removing the old render from the rear wall to expose the brickwork. Some of the brickwork had failed and this was replaced and areas repointed with lime mortar to match the existing. The flue was lined as described above with an opening made at first floor level.
The exposed area of chimney stack was also rebuilt to incorporate new lead work for the long term benefit of the building. The new lead tray dressed across the whole area of the chimney stack and then dressed up inside each flue and the pumice liner to catch and eject any water running down the inside of the flue together with any other water percolating down through the pervious brick work.
We were delighted with the efficacy of the new flue and the final look of the re-newed inglenook.
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