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Flue and Chimney Design Service - Flexible chimney liner

Flue and Chimney Design Service

Flexible Chimney liner is usually the easiest way of lining and insulating an existing chimney. Lining and insulating your chimney makes it suitable for use with a wood burning stove. If your chimney is made using terracotta liners then installing a flexible chimney liner is also a good way to form an insulated chimney.

Flexible flue liner system design

It will take our designers 24-48hrs to complete your design, more during busy periods. If you have not been contacted within a few days then please feel free to contact us to check on progress. click here for a printable checklist of the details needed

Click here for the application form

The liner is held at the top and bottom of the chimney whilst 2 different types of insulation are used: rockwool sleeves and leca. Rockwool sleeves are used where there is plently of space in the chimney - they slide around the liner in 1000mm sections, add 50mm to the liner diameter and reduce flexibility.
Leca is used where space is limited and/or when there are tight bends in the chimney. Leca insulation is like beads or pebbles and you pour these around the flexible chimney liner right to the top ofthe chimney. The disadvantage of leca is that there will be little insulation between the liner and the masonry chimney wall on the inside surface of bends.

See our lining a chimney page for detailed instructions on how install flexible chimney liner.

Stove register plate measurements

stove register plate dimensions

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