Problem with your Chimney ?
We offer CCTV camera surveys of flue/chimney systems in order to inspect and report on possible failings of a system from there our engineers can determine what can be done about it and how we may assist you in rectifying the problem.
We also offer a sweep/cleaning service, we can supply rope and glass that may have been damaged or reline your chimney if it is in need of repair. Just contact us and arrange an appointment and we will be happy to hear from you with your queries.
The Importance of Inspection
Proper inspection means inspection by qualified, competent persons such as ourselves we have years of experience. Products of combustion can be hazardous even deadly when we bring fire into the equation. It is important to ensure you get the right person for the job.
The function of a chimney is to safely remove the products of combustion from a fireplace or appliance to the outside of the building, without causing any danger to the occupants of the house. A chimney works because hot air rises and moves from high to low pressure. Factors such as running an appliance at a very slow rate or cold air leaking into the flue will cool the gases and affect the performance of the chimney. Lining systems are designed to replace the flue in an existing chimney, with dimensions appropriate to the appliance. Insulation may be added into the new flue system to improve the efficiency of the draught. This is a particular requirement for external situations. The Lining method of a chimney and materials may vary.
Why Line Chimneys ?
Chimney are lined for a number of safety related reasons.
1. The flue may have lost integrity and can leak smoke into rooms or other parts of the building.
2. Condensates or tar can seep through the chimney walls causing staining, inside or outside the building.
3. Lining with insulation included improves the operation of the appliance and flue.
4. Defective flue systems may be eroded and rough. This will cause frictional resistance to the flow of the gases resulting in poor up draught.
5. Large flues (over 200mm) particularly ones containing voids may affect appliance performance. Some appliance manufacturers specify smaller flues for efficient operation.
Chimney related problems
Creosote is black or brown in appearance. It can be crusty and flaky, tar like or shiny and hardened. Often all forms will occur in one chimney system. Whatever form it takes Creosote is highly combustible. If it builds up in sufficient quantities and catches fire inside the chimney / flue the result will be a chimney fire. Getting the chimney swept each year will minimise this problem.
Certain conditions encourage the build up of creosote that is, restricted air supply i.e. lack of ventilation in room, unseasoned wood. i.e. high moisture content in fuel, cooler than normal chimney temperatures all contribute and can accelerate the build up of creosote. Air supplies may also be restricted by failure to open all air controls fully on the stove to allow enough heated smoke up the chimney. The longer the smoke’s ”residence time” in the flue, the more likely it is that creosote will form. When burning unseasoned wood so much energy is used just to burn off the water content trapped in inside the wood, the resulting smoke will be cooler as it moves through the chimney/flue. Cool flue temperatures speed up creosote formation.
To solve these problems or at the very least to minimise ‘smoking’ stoves and soot build up and possible chimney fires, always keep your chimney swept and free of blockages, ensure there is a vent in the room to the outside for fresh air to supply the room and crucially the stove or open fire. A fire needs oxygen to burn and to aid with flushing the smoke up the chimney. A properly designed and installed flue system is also important in aiding the efficacy of smoke removal. Remember a flue or chimney is like an exhaust system on your car its sole purpose is to safely take away combustion gases from the room. Most chimney’s in the country have 8” clay pot flue systems, most manufacturers of stoves recommend proper sizing of flues to suit their products these sizing’s are generally smaller than the standard 8” and come in at roughly 5” to 6” flue size in diameter. If you are experiencing flue problems the case may be that you need to line the chimney with a smaller size flue to suit the appliance. That being said it is perfectly practical to use the existing 8” flue you may never experience any problems down the line. We recommend the use of flue liners as do stove manufacturers, ultimately it comes down to you the customer to choose what system and appliance to be installed in your home.