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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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    • CommentAuthormike7
    • CommentTimeAug 13th 2008
     
    Several people have mentioned their efforts to minimise the work in cutting stacking and carting logs, and I'm interested too, so thought I'd raise it as a topic. Does anyone have a system that works especially well? (Apart from insulating well and not needing any, thanks Tony:bigsmile:)
    • CommentAuthorTheDoctor
    • CommentTimeAug 14th 2008
     
    i am finding that a long stack works, and am building a new improved version soon.

    make sure the long side faces the house. that way you are not tempted by laziness or the weather to just take logs from the near end - even if they aren't seasoned.

    someone mentioned old potato crates stacked on their sides, in banks two high. i like that idea.
    • CommentAuthorludite
    • CommentTimeAug 14th 2008
     
    For the last few days we have been burning 'logs' made from the branches of trees - rather than the trunks of windfalls.

    Hubby used a chainsaw to prune all the low branches in a copse planted 20+ years ago. He then pulled them free and laid them out for a few months. We went out together and I held the long pieces while he cut them (with chainsaw) straight into the tractor trailer. Tractor then went straight back to the house and wood has been unloaded into yard and put on the fire.

    Using this wood has cut out the 'chopping/stacking' stage you would get with thicker pieces. Have got to thinking about using even younger wood - stuff I could cut with a lopper - no chainsaw fuel involved - but query how much more we would need to get the same amount of heat.?
    • CommentAuthorTimber
    • CommentTimeAug 14th 2008
     
    wet wood will burn but slower, and not as cleanly.

    dry wood burns hot and fast

    it all depends what you want really!

    personally i would got for the 'norm' of burning dry wood
    • CommentAuthorTimber
    • CommentTimeAug 14th 2008
     
    having posted the above...

    does the tradition of burning dry wood come from open fires though?? you don't want to burn wet wood due to spitting!

    just a thought!
    • CommentAuthorEd Davies
    • CommentTimeAug 15th 2008
     
    Also, burning wet wood will take away energy in the latent heat of vapourization of the water.
    • CommentAuthorTheDoctor
    • CommentTimeAug 15th 2008
     
    you are burning logs in August??!

    i know it isnt the best Summer we've ever had, but it surely isnt time to fire up the old grate yet, is it?!
    • CommentAuthorludite
    • CommentTimeAug 15th 2008
     
    Spitting depends on the type of wood, not just how wet it is. When we get properly organised we hope to have areas to store the wood properly, so it is dry - like you say, dry wood is best, but at the moment we are burning it almost as fast as we can prepare it.

    Yes doctor, we are still burning in August - this is because we have had only about a week of decent weather. If it's a lovely warm day then we turn on the oil fired boiler for an hour in the afternoon to give us enough hot water for baths and washing up. If the house is still cold by 2 o'clock, then I'll lay the fire and start burning to give us heat and hot water.

    Our electric bills may be high, but we haven't bought any oil for 14 months or so - so long as no one nicks our stash we should be ok to use it in 'emergencies'.
    • CommentAuthorTheDoctor
    • CommentTimeAug 15th 2008
     
    splendid

    summer has been a bit 'poor' hasn't it!
    • CommentAuthorTheDoctor
    • CommentTimeAug 15th 2008
     
    snow drops will be out soon!
  1.  
    The thermal store I had in mind is varying between 400 litres and 1,200 litres at the moment. It will be located in the garage. If it was located on the outer garage wall and one of a series of log stores is outside on the opposite side of the wall - would this have any benefit do you think in drying out the wood? Or will I just have a cosy haven for critters?

    Also, should I seriously be thinking of locating a heat dump radiator outside at the back of the wood pile?
    • CommentAuthormike7
    • CommentTimeAug 15th 2008
     
    Posted By: luditeFor the last few days we have been burning 'logs' made from the branches of trees - rather than the trunks of windfalls.

    Hubby used a chainsaw to prune all the low branches in a copse planted 20+ years ago. He then pulled them free and laid them out for a few months. We went out together and I held the long pieces while he cut them (with chainsaw) straight into the tractor trailer. Tractor then went straight back to the house and wood has been unloaded into yard and put on the fire.

    Using this wood has cut out the 'chopping/stacking' stage you would get with thicker pieces.


    To try and cut out stacking/drying I wondered about ring-barking trees to kill them and then leave them standing a year or so hoping they would dry sufficiently before felling them. Suspect they would not dry enough.
    • CommentAuthorludite
    • CommentTimeAug 15th 2008
     
    Grandma tried ring barking a couple of sycamore, then she tried poison, then ring barked them again, then hammered in a few nails. . . the b**gers still wouldn't die. In the end, the hubby sawed them off at the bottom and now they are shooting from the stumps!!
    • CommentAuthormike7
    • CommentTimeAug 16th 2008
     
    Hmm - sycamore does very well here too. I think it should work on birch, though. Could subcontract the job to squirrels, who seem to know how to do it terminally.

    Posted By: Ed DaviesAlso, burning wet wood will take away energy in the latent heat of vapourization of the water.


    I had a go at working out just how much heat would be lost in this way. Comparing dry 12% wood with wet 40% I got a figure of about 0.3kWh per log weighing 1kg @ 12% - lummy, I do hope that's clear. Such a log is supposed to give out 4kWh @ 12%, so you'd lose about a tenth burning it wet. 40% is a bit conservative though. One place I looked said wood moisture content could be over 100% ! Sounds ridiculous but what they meant is percentage water of its dry weight, so that's all right then.

    Sod it, I only sat here to check tomorrow's weather and now it's 1.52am.
    • CommentAuthorludite
    • CommentTimeAug 16th 2008
     
    The Doctor. I'm interested in your 'long stack', but I'm not sure what you mean exactly. Could you post a picture?

    We are experimenting with where to store our wood. Last year we had some in a shed which was open at the East and West ends, kept off the earth floor on wooden pallets. We also had some in a Byre - off the cobbled floor on pallets with the stable door left open. Then we had some uncovered, outside on a concrete hard standing.

    The well aged dry stuff in the byre went mouldy in a matter of weeks (not sure if that's because we moved it in the rain) The stuff in the potting shed open at both ends went a little mouldy in the middle of the stack, and the stuff outside was fine - but wet because of the rain.

    This year we have a massive stack of chopped stuff ready for the winter. We've left it outside and strapped a couple of sheets of corrugated iron over the top. . . .(and raised it off the concrete standing on a few pallets) . . . I'm hoping it won't have gone mouldy in the middle when we start to use it - but we won't know until we start burning.
    • CommentAuthorhowdytom
    • CommentTimeAug 16th 2008
     
    Been discussing wood drying with a mate over a pint, he seemed to think that outside, with out a cover the sap would wash out removing valuable sugars, I argued that its the moulds/fungi that eat the sap, neither of us have any idea just how much loss losing the sap may have to calorific value..... any comments ?
    tom
    • CommentAuthorludite
    • CommentTimeAug 16th 2008
     
    Outside, without a cover?? In winter??? That would make it really wet wouldn't it? Or doesn't it matter if the wood is wet with rainwater, so long as it isn't wet with rising sap?
    • CommentAuthorTimber
    • CommentTimeAug 16th 2008
     
    moisture content is moisture content, weather it is water that was in the wood when it was cut, or rain water getting back in, its still wet!

    To stop the logs going mouldy (timber at 20% or over moisture content), put some bearers in the middle of the large stack. so stack on bearers and after a couple of layers, break the stack with more bearers to allow more air flow over the logs. It going mouldy because there is not ventialltion to the bits in the middle of the stack, and as such they are not drying properly. even a little surface moisture, if it can't escape, will cause mould growth!
    • CommentAuthorJohnh
    • CommentTimeAug 16th 2008
     
    Seasoned (dry) wood that is re-wetted by rain will soon dry off again when moved inside - ideally near to your stove (though not TOO close!).
    Unseasoned wood won't.

    'Timber' is right to stress the importance of ventilation when drying wood and preventing fungal growth. Our cousins on the other side of the Atlantic often stack their woodpiles in the open air with a small tin sheet or tarpaulin over the top of the stack, or more often, with no rain cover at all.
    • CommentAuthormike7
    • CommentTimeAug 16th 2008 edited
     
    Here's a picture of some logpiles in Germany (sorry - edited the brightness and can't see how to delete the first picture):-
    • CommentAuthorfuncrusher
    • CommentTimeAug 16th 2008
     
    Look at old threads: this subject explored in great detail, from which you could all learn a great deal.
    • CommentAuthormike7
    • CommentTimeAug 16th 2008
     
    Thanks, Funcrusher. It's clear users of this forum including me tend not to make best use of the search facility before they ask their question, but sometimes it is easy to miss a relevant thread, even if you do search. An aspect of woodburning I was particularly interested in was the simple logistics of handling the wood. How many times you lay hands on a log, that sort of thing. Any pointers? I saw a long and informative thread in which you participated prominently relating to seasoning and choice of species. Marvellous - thanks again.
    • CommentAuthorfuncrusher
    • CommentTimeAug 17th 2008
     
    Mike: my comment mainly directed at those introducing side issues to your question. I'm afraid a disadvantage of this and other fora is that too often the same old lags hi-jack a new thead and the original question never gets a full discussion or answer.

    I have a lot of experience with firewood; it's hard work if you cut it yourself. It needs to be as dry as you can make; every bit of moisture uses up the heat to turn it in to steam, so you end up wasting a lot of effort, plus getting tar in your chimney due to low temp gases. So if you are using wood as a major fuel source you need an awful lot of storage - ideally 2 year's supply. Late summer or autumn is a good time to cut as sap is low, but that's not critical. You must cut into logs to suit your grate and split if need while green. Wood dries mainly through the end grain, and doesn't split easily when seasoned, so very bad idea to store in lengths. Logistics depend on site: hauling in lengths and ringing up next to the store is simplest. Store outside under a simple 'car port' with pallets underneath and on the side of the prevailing wind if exposed. At the end of the second summer, try to transfer your winter supply inside your house or a really dry shed: timber absorbs water from the air so even dry firewood in the carport becomes much wetter as winter humidity arrives.

    Closed wood free-standing cast iron wood-burners are the most efficient, open fires the worst. If you find the wood burns too fast, it is NOT to dry, it simply needs better control of the air supply.
    • CommentAuthorludite
    • CommentTimeAug 17th 2008
     
    Like the picture Mike7. Is that you in the corner?
    • CommentAuthormike7
    • CommentTimeAug 17th 2008
     
    'Tis my brother-in-law, plus barnet of my sweetie.
    • CommentAuthorTheDoctor
    • CommentTimeAug 18th 2008
     
    the ring barking idea

    freshly cut trees are very easy to split with an axe

    seasoned logs are far harder to split.
    • CommentAuthormike7
    • CommentTimeAug 18th 2008 edited
     
    Thanks Doc - there goes another barking idea of mine ... ah, maybe not. Not having thinned my wood as much as might be recommended, I have a lot of tall thin birch which means that much of it is 100mm or less diameter which I would'nt split in any case. Also, I seem to remember birch being easy enough to split even when dry. (Edit: I've just nipped out to check - memory is false. Splitting dry birch is hard!) Unlike elm, which I found next to impossible.
    • CommentAuthorTheDoctor
    • CommentTimeAug 18th 2008
     
    elm is well known as being hard to split. It has a very interwoven grain. Hence it was used in ship building and furniture making as it takes nails and fixings into the end grain without splitting
    • CommentAuthorrichardt
    • CommentTimeAug 18th 2008
     
    <try to transfer your winter supply inside your house or a really dry shed>

    That's a lot of additional handling if you use the volume we do. And even very solid barns are pretty much at ambient humidity, unless you're actively drying/heating them.

    Personally I fell, skid to one of a couple of trackside points and leave on stickers for a year, ring to length with chainsaw, split with tractor, stack in leantos or potato boxes for 9-12 mths, bring indoors 2 days ahead of use. Seems to work.
    • CommentAuthormike7
    • CommentTimeAug 23rd 2008
     
    Til now I have barrowed logs from the main drying store to re-stack in the porch by the front door. From here I can take them by the basket-load to the fireplace/stove without getting my feet wet.

    This autumn I hope to cut down the number of times each log is handled by loading logs from the main store onto 'stillages', made of wood bars and steel uprights on which a goodly amount of logs can be piled in a tall narrow column, then lifted like a mini pallet and trundled away on an 'outdoor' sack barrow to be parked in the porch store. When needed, a clean indoor sack barrow will be used to trundle the pile in and park it by the stove/fire. We shall see.
   
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