Relining Old Chimneys

It is common to find that old chimneys are in a poor condition and can leak fumes, particularly if the flue is not lined. Over time hot smoke, tars and acids eat into the chimney walls and erode mortar joints causing staining to the exterior stone or brickwork, and leakage of dangerous fumes into the property. Large and uneven flues can also create poor up draught causing smoke to blow back into the room.

It was only in 1965 that Building Regulations required new chimneys to be built with suitable flue liners to protect the chimney structure and provide a smooth flue for efficient performance of the heating appliance.

Old chimneys should be checked by a professional competent person before being put back into use. This should identify what work or repairs are needed. It is prudent, and often essential, to fit a new liner to provide a smooth sealed flue way that ensures maximum safety and efficiency. Most stove and fire manufacturers require their appliances to be used with chimneys that have a suitable liner.

Has your chimney stack been taken down?

It is quite common to find chimney stacks that have been taken down and it is usually simple to rectify.

Ordinarily, most chimney stacks would have been taken down to just below the roof as this was often easier that repairing or rebuilding the chimney if it was in poor condition or leaking water.

At Topstak, our experts can fit a new insulated metal chimney for you. This is quicker and cheaper for you than rebuilding the chimney in bricks or blocks.

Topstak supplies a choice of systems for relining chimneys which are shown below and explained in more detail in the following pages:

  • Multiflex
    Multifuel double skin flexible flue liners

    Multiflex leads the market in terms of quality, proven performance and technical back up. According to chimney specialists and installers across Britain it is the strongest and most flexible liner on the market.

    read more
  • Gas Flex 1
    Single skin flexible flue liners

    Single skin liners are often called “Gas flex” and have a single skin of stainless steel that is designed for use with gas fired appliances and certain types of oil fired appliances that create flue gas temperatures less than 250ºC. These liners must not be used with wood or multifuel burning appliances.

    read more
  • Sp pipe
    Rigid Stainless Steel flue pipes

    Rigid liners can provide a useful answer for relining certain types of chimney where it is best to fit a rigid system in an essentially straight chimney as the liners need to be lowered down the chimney. They can be wrapped or backfilled with insulation.

    read more
  • Ql1
    Pumice Concrete Flue Liners

    These liners are made by Isokern from pumice which is a volcanic rock that has amazing resistance to high temperatures and exceptionally good insulating properties, which is just what you want for a flue liner.

    read more
  • Gather
    Gathers and register plates for relined chimneys

    If a chimney is being relined above an open fire it is usually necessary to have a "gather unit" fitted above the above fireplace to which the flexible flue liner is attached. We stock standard gathers and also offer a made to order service for gathers and also register plates.

    read more