Chimneys are generally relined when the existing chimney is either –
a) Unsound or starts to leak poisons gasses into the property.
b) If the cross-sectional area of the flue is too large for the intended appliance.
c) If the existing lining is found to be unsuitable for the proposed appliance type.
When lining chimneys, chimneycure use stainless steel flexible liners as these are the most commonly used in existing chimneys due to the ease of installation which causes very little disruption to the property when installing.
We only supply quality liners which are HETAS approved which are very resilient and are available in two grades, 316 which carry a 10 year manufacturer’s guarantee, and a 904 which carry a 20 year guarantee.
Depending on the site conditions and the size of the existing flue some installations require vermiculite insulation which is back filled between the liner and the flue walls; this keeps the liner warm which increases updraft and eliminates condensation which will damage the liner offer a period.
liners are protected by a stainless steel cowl which prevents water ingress and birds or vermin nesting in the flue.