A Chimney flue liner refers to a conduit inside the chimney walls that guides the exhaust gases out to the chimney top to protect the chimney walls effectively and efficiently. A new chimney liner is required by law in the case of installing a new stove or furnace. Normally Flue liners are made from stainless steel while some are made from clay tile liners. The stainless steel liner lasts about 16 to 19 years. If poor quality ones are made then such last about 5 to 6 years. By contrast clay tile liners last about more than a half century. Stainless steel flue liners cost about 10 times more than the clay tile liners per foot in height. Paradox ally when the cost of labour is included, the tables are turned around and the clay tile flue liners are significantly more expensive.
The time taken to install the duo is such that steel liners may be installed in a couple of hours, in some cases in less than an hour, While the clay tile liners installation usually take a day or a couple of days to install. Replacing a steel flue liner in comparison to the tiled one is a simple and uncomplicated affair. In clay liners not only will new clay liners have to be installed, but the old ones will also first have to be dismantled. The amount to be paid to labour for this arduous and time-consuming task would be tremendous. A steel chimney liner is installed as a small diameter pipe. Upon reaching the full length of the chimney the diameter of the steel liner is adjustable and expandable. The diameter being expanded and secured to the right dimensions at the chimney lower entrance and at the chimney top. Contact with the chimney walls ensures that this lining cannot expand beyond such proportions, that being, the narrowest place in the complete height span along the conduit area. Some of the factors involved are explained by the Chimney Flue Liner Fitters
- Chimney flue liners and securing ends removed. Complicated in the case of clay tile liners. Stainless steel flue liners removed in the shortest possible time
- Chimney flue liners and securing ends installed. This follows step 1.
- Double insulated flue wall mounted flue pipes. These are used in the case of a chimney not being available.
- Chimney renovation. Due to being made many years ago some chimneys need repair and attention to make them serviceable again.
- Correct sized and compatible chimney pots fitted
- One way anti draught cowls and spinning cowls fitted. Chimneys at a lower rooftop height tend to ingest the gases from the surrounding chimneys working as a reverse order in chimneys. This is based on the scientific law that low-pressure areas receive gases from high-pressure areas. Anti-drought cowls ensure this doesn’t happen.
- 6 inch thick hearths made of concrete or stone installed. the purpose is to prevent heat and flame reaching the floorboards and surrounding fittings and joists.
There are also more relevant factors that are carried out by these professional Chimney Flue Liner fitters.