Q&A Facebook page

We are pleased to announce the new interactive NACE Q&A Facebook page which can be accessed here.

You are invited to use this facility for technical, legal, mechanical, fire risk and/or safety, installation or document interpretation advice.

The NACE Facebook page has been designed for the professional and for those who require further technical and mechanical advice.

Please use the new NACE Q&A system. Although not a forum, you are more than welcome to leave constructive comments on the page or email to facebook@nace.org.uk should you feel these are necessary. We will certainly consider all responses carefully.

Samples of recent posts:

Dear NACE Technical Team

I've Just been to a new build house where they have just installed a stove and liner (not even used yet) and there is condensation forming on ref plate?? Any ideas other than the fact it’s all the moisture from the brick and cement and not being used ??

Ta Joe

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Dear NACE Technical Team

I am a qualified degree engineer within the automotive industry and the owner of an old public house which is now a large private dwelling and grade listed, I believe a 2 according to my local council. I have been recommended to contact you through the CIEH.

I have an open plan lounge/dining room that was at some point two cottages and two large inglenook fireplaces either end of the property, I recently found when lighting either fire the upper bedrooms would become smokey, this has occurred since owning the building earlier this year.

The chimneys have been mucked about with over many years as a pub and then a domestic dwelling, so its difficult to know whats original and what isn't, I am aware that there have been alterations to the flues and there maybe different linings within, this is based upon a structural engineers report I had carried out before I bought the property.

In view of the smoke issues I was recommended to employ a local chimney sweep to sweep the chimneys and whilst doing so hoped would pick up on the issues I had been experiencing, after an hour or so he produced several certificates which according to the tick boxes indicated my chimneys were fit for use, I then explained about the smoke escaping into the upper bedrooms, he didn't know what to say or was he able to explain how smoke was ingressing into the chimneys and bedrooms either structurally or otherwise. I later discovered these certificates to be legally worthless therefore his certifying my chimneys were fit for purpose was thoroughly misleading.

I have invited various individuals who have attempted to convince me they were so called experts in their industry with of course the usual indifference to the structure of the building simply wishing to offer me very expensive relining systems avoiding having to explain what was wrong in the first place before offering their favorite relining system, having ignored the status of the property or that it is nearly 300 years old thus heavily timber framed and a fire risk I was left once again to seek professional advice in an industry where nobody fully understands the gravity of this work yet it would appear everyone is an expert.

No reference whatsoever has been offered in relation to fire risk or to the safety of either my family or the building we occupy or to the structure of the chimneys in question, a mere poke up the chimney with a camera appears to be all that is necessary with a personal opinion offered as a substitute for any known skill set, in fact one installer had just passed a test which according to him took three days allowing him free passage to carry out installation work although he couldn't explain what was causing the smoking issue, it would appear all he could do is provide a method of bypassing the problem instead of fixing it or at least explain what the problem was to start with.

To add to these dire experiences, one shop based installer explained that a month or so ago he was driving a taxi for a living although willing to fleece me of several thousand pounds he was stumped to explain what was going on or how to proceed with local authority.

I have contacted a number of shops and independent installers in my area and find that none of them have a clue to the bigger picture' other than trying to flog me systems that according to them I should avail myself of, I have spoken to my local authority who recommend the competent persons scheme that many of the idiots who have advised me belong to, I am at my wits end with this project, given the excellent posts on this Q&A site and that NACE appear to be the only organisation capable of answering such difficult questions (or who want to) would the Technical Team please offer their advice.

Many thanks in anticipation.


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Dear NACE Technical

We have recently looked at a job where there is a large inglenook fireplace (our client is considering a stove) with a masonry flue shaft serving this area of approximately 325mm by 325mm.

Our client wants us to install two stainless steel liners into an a flue at present serving an inglenook fireplace, I have told the client it is not possible to use two separate liners, one for a stove and one for an Aga in the same flue shaft. He has had two alternative quotes, one telling him the Aga doesnt need a liner and is fine and the other saying that two flexible liners surrounded by vermiculite is acceptable.

My understanding is it is not, (section 1.25 ADJ). I have been told however that a flexible liner with a twin wall flue system in the same masonry flue shaft is acceptable.

If this is the case, would two pumice lining systems be acceptable as we would be providing two new, permanent flue walls?

Hope you can help


Trevor Hendes

Billing Chimneys

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In a moving landscape of external pressures, organisational and market changes NACE offers the only prescribed qualification in chimney related construction skills.

The 'NVQ 'Chimney Sweeping & 'Chimney Engineering' Certificate and Diploma are recognised practitioner status qualifications providing the only singular route to professionalisation and formal recognised trade status to ensure a consistency in standards and quality thus creating, protecting and safeguarding the future development of a world class solid fuel industry.

Successful candidates completing the NVQ in Chimney Engineering and/or Chimney Sweeping will automatically benefit from a recognised CSCS card with reference to completed modules recorded on micro-chip style ID cards.

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Dear NACE Technical Team

I recently carried out a CCTV survey of a building of historic importance, you will see from roof top photos that the chimneys in question are well sealed.

My concern is that warm air from within the building is getting trapped near the top of the chimneys thus causing condensation to build up in the unlined flues.

I would like to suggest the fitting of air vents in the side of the chimneys if the client does not want to fit pots and ventilated caps, would you agree with my recommendations?

Many Thanks

John. Diamond Sweeps

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