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About arboriculturist

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  1. In this neck of the woods 100% hardwood Air dried is £ 120 and 100% hardwood Kiln dried is £ 140. Up to now, in the majority, the general public have been educated to burn Kiln dried firewood below 20% MC. A 5 minute search online today backs this statement up by various claims such as: Other firewood will tar up your chimney, kiln dried gives double the heat of air dried logs, various graphs that show the expected kWh from kiln dried in comparison to other firewood, often shown on graphs as being at of 30 - 40 % MC ! Having spoken to many end users, several definitely think that kiln dried is best as it is very dry, its 20% MC and doesn't tar up your chimney. They rarely even think about value for money. They clearly believe just what they have read and been told by the woodburner installer and what it says in the manual that came with the stove. When we all have to comply with 'Ready to burn' legislation and all timber of whatever type hard or soft, or of whatever species has to be at 20% MC, all the marketing attached to retailing kiln dried as a premium product will be invalid. Up to now, in the majority, the general public have been educated to burn Kiln dried firewood below 20% MC. That 20% figure is ingrained in people's minds and unless government sees sense, takes stock and takes a step back to a rational MAX. 25% MC threshold - that 20% figure will be there in perpetuity - period. In addition, all the woodburner manufacturers would also have to fall in line to get it to stick and print Max. 25% MC naturally air dried or kiln dried softwood or hardwood or a mixture of both is suitable for burning in this appliance. Is this likely to happen? We shall see. I personally think that even though it will destroy thousands of smaller firewood retailers who will be unable to meet the threshold, due to their geographical location, Planning requirements, insufficient site space or lack of funds to put in place the infrastructure to naturally air dry / kiln dry the timber, it is inevitable that the proposed legislation is coming in its current form within 9 months and tightened further in the following 12 months. Which is better value for money - Air dried Firewood @25% MC or Kiln dried @ 20%MC ? Based on all the available data - there is clearly very little in it. However the fuel burning process to force dry - kiln dried firewood without doubt, produces 100% more pollution, which is harmfull to the environment we live in and the air we all breath.
  2. Some interesting replies coming in. As I mentioned, assumed values will have to be used, such as assuming we are comparing quantities like for like, species like for like etc. Maybe if someone is really keen to stick their head above the parapet, they will set out the maths behind the science. The general trend is leaning towards Air dried to 25% MC is better value than kiln dried. However the public have been educated for so long that kiln dried circa. 20% MC is what they should burn, that they actually believe that kiln dried is better. Nevertheless I have managed to persuade 100's and 100's of customers that this is actually not the case, so it is possible to get people to change their thinking over time.
  3. Apologies, a few typos and errors - corrected now (always get a 3rd party to proof read before posting 😀 )
  4. This is a question I have spent some time over trying to determine an accurate answer given the variables. Yet again, never, ever have I seen a credible financial comparison between the 2 fuel types. I have compared the 2 fuel types below to illustrate the main differences to facilitate calculating the cost differences: Air dried Firewood @ 25% MC Lower cost Lower kWh / kg Burns for longer Less logs per kg - therefore as firewood bought by volume, less logs needed to be burnt to give the estimated kWh / kg Kiln dried Firewood @ 20% MC Higher cost Higher kWh / kg Burns for less time More logs per kg - therefore as firewood bought by volume, more logs needed to be burnt to give the estimated kWh / kg I have left out all my specific data for each of the above Firewood type characteristics, so not to muddy the water and allow other to give their own independent views. Of course the values for the above fuel type differences will generally be assumed values for the purpose of this post. Possibly some people will have had experience of Kiln dried @ below 20% MC, but in my experience by the the time it is burnt on average the majority of Kiln dried will be circa. 20%. Openspaceman will surely be a main contender to provide eloquent conclusions, if he has the time to reply. Any replies most appreciated from those interested.
  5. Well said - Forest destruction as a direct result of the timber supply chain from overseas is often overlooked and forgotten about.
  6. Thanks, I enjoyed reading that and learning a lot on the way. Have you a view on burning naturally air dried firewood @ 25% MC versus kiln dried @ circa 20% MC and the trade off between the amount of additional particulates burning at 25% versus burning fuel to force dry and /or fuel to transport to achieve the 5% lower MC?
  7. Yes, I have this graph ingrained in my memory - it is what they love to use and it is not very accurate in my view. I could not say with certainty why @10% MC emissions are claimed to be higher than at 20% MC, that would be down to the University that produced this. What I would like to see is an 'evidence based' graph that plots the financial economics comparing burning Kiln Dried versus Naturally Air Dried Firewood @ 25% MC ! This time of hardship and the proposed legislation on 'Ready to burn' is going to have a huge impact on our industry and I will do all I can to fight our corner.
  8. That is a 100% excellent addition to the argument, of course !!! - sold by crated meterage as always quoted. Well that observation has really added fuel to the fire ! I have been working for years to inform customers why not to waste money on Kiln Dried, when there is plenty of people around selling good quality naturally air dried firewood which is so much better value in reality. I have always noticed you talk good sense, but this post of yours today is the icing on the cake for me. All the best.
  9. Another other point that fails to get a mention is this : 'Most' Kiln dried firewood may produce a higher value kWh / kg when burnt due to having been force dried - for arguments sake lets say 4.5 kWh / kg - compared to naturally air dried firewood. However what is never, ever mentioned is the fact that although kiln dried firewood, that has been cooked in a large oven, may produce a marginally higher kWh / kg than naturally air dried firewood, kiln dried firewood burns away far faster than air dried, so in reality burns for less time per Kg ! This fact completely changes the economics of burning kiln dried. In addition, it is also overlooked that during the force drying process, a percentage of the volatiles within the timber that are lost due to heat being applied to dry it. I would suggest that if these facts were common knowledge, the general public may well take a different view on buying kiln dried firewood. Any comments?
  10. The customers I speak to about kiln dried wood say that it is very expensive and burns away far to quickly. I do everything in my power to promote naturally air dried firewood and vise versa dissuading the public to avoid forced dried firewood and I will continue to actively do so. The average homeowner with a woodburner is not so unintelligent that they can't work out for themselves that they do not wish to personally subside a business via the RHI scheme to force dry firewood, that they then have to pay a premium to buy back to burn themselves. Stating the truth about force drying firewood does not make you popular with those that sell it, but it is a shameful practice that continues to exist at present and the planned legislation merely adds fuel to the fire. Any one else with me on this ?
  11. It will need a powerfull / influential ambassador for the industry to emerge if we are to stand any chance of persuading the Gov. to backtrack now. As I have pointed out previously, DEFFRA had the consultation with the handfull of UK big players, who all force dry firewood and then set the 'Ready to burn' MC at a level that suits them perfectly but is totally unachievable for several months of the year for a large proportion of producers who naturally air dry. As per usual, lack of consultation, finance and meeting targets by whatever ill-construed means is what comes to mind often where the Government is concerned. So after C19 has levelled off with >100,000 UK lives lost, along with tax rises and Brexit implemented 1000's of firewood retailers will be impacted massively or forced to cease trading as their production process they have used for decades doesn't meet the latest criteria. Apologies for the reality check, but that is how I see the future chain of events going down in history.
  12. What a fantastic idea! Yes it is true that panel type insulation needs to be airtight between sections and I would use something like Cellulose 'Warmcell' sandwiched between, rather than a superficial caulk that just makes a seal but void of insulation between panels. Also I would use additional Warmcell panels in the wall construction to supplement the Poplar, due to it's low cost and environmental soundness. Yes,100% fit a dehumidifier, humidity-stat controlled and drain off piped to outside for zero maintenance, Ebac or similar quality unit. None of this needs to cost a fortune. Looking forward to following progress. 😀
  13. Foliage - Tilia cordata. Timber - Prunus spp.
  14. I hope you have good fortune with your application. As you know a thing or two about milling, which super-wide bandsaw would you buy? I am sure you have tried a few and been researching these for years 😀
  15. Basically if you have the neck to do it you are able to declare whatever turnover you wish. New businesses can self-certify (like the old days of mortgages). I am really impressed how intuitive the NW site was, took literally minutes to complete the whole process. It will be a breeze for you. I didn't get greedy and stuck with almost the full 25% on actual accounting figures turnover.This is an opportunity not to be missed Steve! Just like when the RHI feed in tariff 1st arrived - a golden opportunity. To grow any business fast you need capital and this is the best it gets.


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