It is recommended that chimneys serving solid fuel appliances be swept as frequently as necessary but at least twice a year.

Ideally this should take place in the middle of the heating season and at the end of the season. The chimney should be inspected at the start of the heating season for blockages, such as birds’ nests.

It is advised that only mechanical sweeping methods are used – chemical cleaning methods are not recommended. The services of a professional chimney sweep should be employed.

Failure to maintain a clean chimney can result in the emission of toxic gases into the dwelling or damage from potential chimney fires. If a chimney fire does occur, professional advice should be sought regarding the condition of the chimney. The chimney should be inspected at least twice a year to see if the construction materials are in a good condition. Particular attention should be paid to terminals, cowls, sections externally exposed above the roof line and inspection openings.

Should any component show any sign of deterioration professional advice should be sought. It could be necessary to replace these components to ensure that the chimney can operate correctly.

It is advisable that only the fuel recommended by the appliance manufacturer. Household refuse should not be burnt. Wood-burning produces considerable deposits of soot, tarry matter and wood ash. The amount of these deposits can be reduced by burning well-seasoned, air dried (preferably 12 to 24 months) wood, and by ensuring that an active bright fire is maintained.

If the appliance is slumbered overnight or for longer periods then it is advisable to run the appliance at controlled high fire condition for a period of at least 30 minutes. It is important to maintain sufficiently high flue gas temperatures in order to avoid condensate and acid corrosion problems.

It is very important that sufficient air for combustion and ventilation is provided to the room containing the appliance to enable correct and efficient working of the appliance and chimney.

Recommendations are given in the Building regulations or CIBSE Guidance notes.

There are many causes of down-draught problems, including the height of the chimney.

If these problems occur it is recommended that professional advice is sought.

A range of anti-downdraught terminals is available.

Chimflex LW & SB Chimney Liners

Damage caused by un-lined flue