1867_owl

It's a 7inch diameter so I'm hoping they it'll be straight forward enough to attach a 6 inch stove pipe to it using a 6 to 7 inch increaser.. It sounds like I may have trouble finding a hetas engineer to do the work and 'sign it off' given that they haven't also installed the flue.. it seems crazy to go to the effort and expense of dropping a 6 inch flexi down the existing flue though when a £50 converter can join the two different diameters of pipe!! The other route involves a £250 application for building regs and a whole lot of effort which is really rather avoid if possible too.!! I know a load of people who never got building control consent. Is this a viable option so you think?

Hi folks. A couple people have said that they think my flue is concrete or clay. I've just cleaned off a section of it which looks pretty metallic to me. I tried a magnet on it (magnetic knife strip) which didn't attract. Any more thoughts on the material?

Thank you everyone for all the incredibly informed replies.. To provide a little more detail. The house is an Edwardian terrace c1908. The flue was lined by the previous owner 5/6 years ago. I'm not sure if it was lined with the intention to enable a stove at a later date or if it was just to improve the safety/ efficiency of the existing open fire. I took the following picture up the chimney just now. so is yours a vitreous enamel steel liner or built in-situ sectional concrete rings? - I'm not sure if this answers the question but it looks like flexi liner to me? My 'plan' is to use something like this to adapt between the 6 inch stove pipe and 7 inch chimney. Not the best picture i know but the internal diameter of the existing flue pipe appears to be 7 inches a registered installer will not sign off work of others especially untrained others - Given adequate inspection of the existing flue and the ability to fit the stove/ adapter themselves do you not think a Hetas installer would 'sign it off'? I may also be able to get some certification/ proof of purchase from the previous owner of the house. I'm not sure if there is any way for me to tell whether or not the flue has been backfilled with insulation material so i'm open to suggestions with regards to how I could find that out? Finally, here is a view of the chimney. It looks like cowl is relatively new. Would this be adequate for the multi-flue stove that I am hoping to have installed? Thanks again everyone!

Hi all, I'm looking for some advice on installing a multi-fuel stove in my house. The house I just moved into comes with an open fire with a relatively modern 7 inch flue pipe. When providing me with a quote the other day, a salesman/ fitter for a stove company asked for £600+ to install a flue pipe. His recommendation was that we should buy a stove with a 5 inch pipe and that out chimney would likely have an 8 inch flue (turns out its 7 inches) and that it was not possible to convert from 5 inch to 8 inch. However, the stove I have my eye on has a 6 inch outlet which i'm hoping will function more or less fine when converted to out existing 7 inch flue pipe. There are many such increasers/ converters on the market. This being the case, I would hope to be able to do the job myself. So a few quick questions: 1. Is it building regs compliant to convert this way? I'm read that it is not ok to decrease from stove to flue but can't find anything conclusive for the other direction 2. What are the downsides? I've ready that there can be a drop off in efficiency which might lead to the chimney sooting up slightly quicker and obviously slightly more heat/ money 'going up the chimney' 3. to avoid the need to apply for building regs, would a Heatas approved installer be able to do part of the installation, for example fitting the collar/ cowl and thereby make the whole thing cosher? Thanks in advance everyone.