The heat produced by burning firewood is actually the energy of the sun, the ultimate source of all energy on planet earth. Through the process of photosynthesis, arguably the single most important thing that happens on our planet, trees are able to store solar energy as chemical energy that we can use for heat when the sun abandons us to the cold dark days of winter. Burning wood is just the quick reversal of this process, liberating the suns heat when we need it most.
Unlike the burning of fossil fuels like gas or oil, which many believe to be upsetting our climate for the worst, burning firewood releases no more harmful greenhouse gases than would be produced were the wood to simply rot on the forest floor. If we are responsible in the ways we select, cut, and burn our firewood, wood burning can actually be the correct choice for the environment too.
Wednesday, 14 March 2012
Wood Buring Tips
Yes, it's OK to burn a little pine, even construction scraps, as long as you burn just a little and use it mainly for kindling.
DO NOT however burn large quantities of resinous softwoods as these fires can quickly get out of hand.
DO NOT burn any construction scraps of treated or painted wood, especially treated wood from decks or landscaping ties. The chemicals used can release dangerous amounts of arsenic and other very toxic compounds into your house.
If the "seasoned wood" you bought turned out to be pretty green and you elected to try to burn it anyway, be sure to have the chimney checked more often than usual, you may build up creosote very quickly. You don't have to burn only premium hardwoods. Less dense woods like elm and even soft maple are abundant and make fine firewood as long as you're willing to make a few extra trips to the woodpile.
Many people also have questions about burning artificial logs. Convenience is their strong suit and in general they are fine when time is an issue and you want a quick fire without all the muss and fuss of natural firewood. Usually they should be burned only one at a time and only in an open fireplace. One should be careful about poking them and moving them around once they are burning since they may break up and the fire may get a bit out of control. Be sure to carefully read the directions on the package.
DO NOT however burn large quantities of resinous softwoods as these fires can quickly get out of hand.
DO NOT burn any construction scraps of treated or painted wood, especially treated wood from decks or landscaping ties. The chemicals used can release dangerous amounts of arsenic and other very toxic compounds into your house.
If the "seasoned wood" you bought turned out to be pretty green and you elected to try to burn it anyway, be sure to have the chimney checked more often than usual, you may build up creosote very quickly. You don't have to burn only premium hardwoods. Less dense woods like elm and even soft maple are abundant and make fine firewood as long as you're willing to make a few extra trips to the woodpile.
Many people also have questions about burning artificial logs. Convenience is their strong suit and in general they are fine when time is an issue and you want a quick fire without all the muss and fuss of natural firewood. Usually they should be burned only one at a time and only in an open fireplace. One should be careful about poking them and moving them around once they are burning since they may break up and the fire may get a bit out of control. Be sure to carefully read the directions on the package.
Seasoned Wood
All firewood contains water. Freshly cut wood can be up to 45% water, while well seasoned firewood generally has a 20-25% moisture content. Well seasoned firewood is easier to start, produces more heat, and burns cleaner. The important thing to remember is that the water must be gone before the wood will burn. If your wood is cut 6 months to a year in advance and properly stored, the sun and wind will do the job for free. If you try to burn green wood, the heat produced by combustion must dry the wood before it will burn, using up a large percentage of the available energy in the process. This results in less heat delivered to your home, and literally gallons of acidic water in the form of creosote deposited in your chimney.
Wood is composed of bundles of microscopic tubes that were used to transport water from the roots of the tree to the leaves. These tubes will stay full of water for years even after a tree is dead. This is why it is so important to have your firewood cut to length for 6 months or more before you burn it, it gives this water a chance to evaporate since the tube ends are finally open and the water only has to migrate a foot or two to escape. Splitting the wood helps too by exposing more surface area to the sun and wind, but cutting the wood to shorter lengths is of primary importance.
There are a few things you can look for to see if the wood you intend to purchase is seasoned or not. Well seasoned firewood generally has darkened ends with cracks or splits visible, it is relatively lightweight, and makes a clear "clunk" when two pieces are beat together. Green wood on the other hand is very heavy, the ends look fresher, and it tends to make a dull "thud" when struck. These clues can fool you however, and by far the best way to be sure you have good wood when you need it is to buy your wood the spring before you intend to burn it and store it properly.
Wood is composed of bundles of microscopic tubes that were used to transport water from the roots of the tree to the leaves. These tubes will stay full of water for years even after a tree is dead. This is why it is so important to have your firewood cut to length for 6 months or more before you burn it, it gives this water a chance to evaporate since the tube ends are finally open and the water only has to migrate a foot or two to escape. Splitting the wood helps too by exposing more surface area to the sun and wind, but cutting the wood to shorter lengths is of primary importance.
There are a few things you can look for to see if the wood you intend to purchase is seasoned or not. Well seasoned firewood generally has darkened ends with cracks or splits visible, it is relatively lightweight, and makes a clear "clunk" when two pieces are beat together. Green wood on the other hand is very heavy, the ends look fresher, and it tends to make a dull "thud" when struck. These clues can fool you however, and by far the best way to be sure you have good wood when you need it is to buy your wood the spring before you intend to burn it and store it properly.
Storing Firewood
Even well seasoned firewood can be ruined by bad storage. Exposed to constant rain or covered in snow, wood will reabsorb large amounts of water, making it unfit to burn and causing it to rot before it can be used. Wood should be stored off the ground if possible and protected from excess moisture when weather threatens
The ideal situation is a wood shed, where there is a roof but open or loose sides for plenty of air circulation to promote drying. Next best would be to keep the wood pile in a sunny location and cover it on rainy or snowy days, being sure to remove the covering during fair weather to allow air movement and to avoid trapping ground moisture under the covering. Also don't forget that your woodpile also looks like heaven to termites, so it's best to only keep a week or so worth of wood near the house in easy reach. With proper storage you can turn even the greenest wood into great firewood in 6 months or a year, and it can be expected to last 3 or 4 years if necessary.
The ideal situation is a wood shed, where there is a roof but open or loose sides for plenty of air circulation to promote drying. Next best would be to keep the wood pile in a sunny location and cover it on rainy or snowy days, being sure to remove the covering during fair weather to allow air movement and to avoid trapping ground moisture under the covering. Also don't forget that your woodpile also looks like heaven to termites, so it's best to only keep a week or so worth of wood near the house in easy reach. With proper storage you can turn even the greenest wood into great firewood in 6 months or a year, and it can be expected to last 3 or 4 years if necessary.
Buying Firewood
Firewood is generally sold by volume, the most common measure being the cord. Other terms often employed are face cord, rick, or often just a truckload. A standard cord of firewood is 128 cubic feet of wood, generally measured as a pile 8 feet long by 4 feet tall by 4 feet deep. A face cord is also 8 feet long by 4 feet tall, but it is only as deep as the wood is cut, so a face cord of 16" wood actually is only 1/3 of a cord, 24" wood yields 1/2 of a cord, and so on.
Webster defines a rick simply as a pile, and truck sizes obviously vary tremendously, so it is very important that you get all of this straight with the seller before agreeing on a price; there is much room for misunderstanding. It is best to have your wood storage area set up in standard 4 or 8 foot increments, pay the wood seller the extra few dollars often charged to stack the wood, and warn him before he arrives that you will cheerfully pay only when the wood actually measures up to an agreed upon amount.
Another thought concerning getting what you pay for is that although firewood is usually sold by volume, heat production is dependent on weight. Pound for pound, all wood has approximately the same BTU content, but a cord of seasoned hardwood weighs about twice as much as the same volume of softwood, and consequently contains almost twice as much potential heat. If the wood you are buying is not all hardwood, consider offering a little less in payment.
Webster defines a rick simply as a pile, and truck sizes obviously vary tremendously, so it is very important that you get all of this straight with the seller before agreeing on a price; there is much room for misunderstanding. It is best to have your wood storage area set up in standard 4 or 8 foot increments, pay the wood seller the extra few dollars often charged to stack the wood, and warn him before he arrives that you will cheerfully pay only when the wood actually measures up to an agreed upon amount.
Another thought concerning getting what you pay for is that although firewood is usually sold by volume, heat production is dependent on weight. Pound for pound, all wood has approximately the same BTU content, but a cord of seasoned hardwood weighs about twice as much as the same volume of softwood, and consequently contains almost twice as much potential heat. If the wood you are buying is not all hardwood, consider offering a little less in payment.
Wednesday, 23 February 2011
Free Firewood - Where to get it from
There are several ways to obtain free firewood for your wood burner.
First of all you will need some equipment and be prepared to cut and chop the wood yourself. Once you have the right tools (e.g. chainsaw, chopping axe, safety wear, etc.) you can then talk to your neighbours and friends to see if they need any trees removing. Be sure you know what you are doing and have someone helping you as cutting down trees is not without danger.
There are other and easier ways as well. You may, or know someone who has, access to broken or un-used pallets. Although these are generally made of softwood, they can be cut down and used straight away. This is also a great way of re-cycling.
Another option I have come across a couple of times is where local council or contractors are cutting down trees. In most cases they will not use any of the wood that is cut down and simply shred every little bit (even the big bits). If you see this happening, just ask if you can have some of the logs before they are shredded. Offering a cup of coffee may soon convince them to do less work.
If you are not choosy as to which type of firewood you want, there are some options available. You may not always get the best wood for your wood burner, but every little helps.
First of all you will need some equipment and be prepared to cut and chop the wood yourself. Once you have the right tools (e.g. chainsaw, chopping axe, safety wear, etc.) you can then talk to your neighbours and friends to see if they need any trees removing. Be sure you know what you are doing and have someone helping you as cutting down trees is not without danger.
There are other and easier ways as well. You may, or know someone who has, access to broken or un-used pallets. Although these are generally made of softwood, they can be cut down and used straight away. This is also a great way of re-cycling.
Another option I have come across a couple of times is where local council or contractors are cutting down trees. In most cases they will not use any of the wood that is cut down and simply shred every little bit (even the big bits). If you see this happening, just ask if you can have some of the logs before they are shredded. Offering a cup of coffee may soon convince them to do less work.
If you are not choosy as to which type of firewood you want, there are some options available. You may not always get the best wood for your wood burner, but every little helps.
Tuesday, 22 February 2011
Wood burning - Becoming an Obsession
I have now had a wood burner for 18 months. Initially the intention was to merely cut some cost in heating the house. A few weeks down the line however, it appeared to take over some parts of my life. Making sure that the fire burns at its best at all times, some primeveal instincts seem to take over generating some obsession with fire.
Wood burning is on your mind all the time. Driving along through the country side you begin watching fallen trees and calculating as to how much firewood you could get out of them.
Indeed, once your wood burner is installed and running, the main task really is to 'feed' it. Firewood has recently become very expensive and you are constantly thinking about how you can obtain free firewood. If you want to go down that route you will need to put in some physical labour and time as well as invest into the right tools to cut and chop. You will find out about the right type of wood to burn and learn about firewood seasoning. At the end it is all worthwhile - there are countless benefits of owning a wood burner.
This blog will hopefully attract some other wood burning enthusiasts to share their experience and knowledge.
Wood burning is on your mind all the time. Driving along through the country side you begin watching fallen trees and calculating as to how much firewood you could get out of them.
Indeed, once your wood burner is installed and running, the main task really is to 'feed' it. Firewood has recently become very expensive and you are constantly thinking about how you can obtain free firewood. If you want to go down that route you will need to put in some physical labour and time as well as invest into the right tools to cut and chop. You will find out about the right type of wood to burn and learn about firewood seasoning. At the end it is all worthwhile - there are countless benefits of owning a wood burner.
This blog will hopefully attract some other wood burning enthusiasts to share their experience and knowledge.
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