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Welcome
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FIREWOOD &
CORDWOOD
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FIREWOOD
During these days of high heating prices, firewood provides a
viable alternative to gas, oil or electric heat. Firewood is usually
sold by the "cord" which is a measure of wood equal to 128
cubic feet. |
| The State of Pennsylvania requires firewood to be sold
as a specific volume in cubic feet.
Since fireplace logs aren't cut to 4 foot lengths, the volume
calculations become a bit more difficult. |
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CORD OF FIREWOOD
One cord of stacked firewood =
4 feet x 4 feet x 8 feet =
128 cubic feet |
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CORD OF WOOD
Wood is often sold by the "face cord" which is a stack of wood 4
feet high and 8 feet long, with logs of varying length. The length
of the pieces of firewood will determine how much wood is actually
contained in a face cord. If the logs are 24 inches long, a face
cord will contain 1/2 cord; if the logs are 16 inches long, a face
cord will contain 1/3 cord. Carrying these calculations a bit
further, a full cord of 16-inch
length pieces would be a stack 4 feet high x 24 feet long. Air space
in most stacks (due to the irregularity of logs) will average approximately 25% to 30%
of the total volume.
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The
volume of this bundle
of firewood is labeled
as .75 cubic feet. |
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HEAT VALUE OF
CORDWOOD
Hardwoods (oak, hickory, beech,
locust) have better heat value than softwoods because the wood is
denser. |
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APPROXIMATE HEAT VALUE RANKINGS
FOR COMMON FIREWOODS
IN THE
NORTHEAST US
1. White Oak
2. Black Locust
3. Shagbark Hickory
4. Sugar Maple
5. Beech
6. Red Oak
7. White Ash
8. Red Maple
9. Black Walnut
10. Black Cherry |
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CHARACTERISTICS OF FIREWOOD
Some types of wood are
more user-friendly since they're easier to start on fire and will
burn much better. Ash is often called "the Firewood of Kings" since
it burns well even when freshly cut.
Generally speaking, woods high in resin content (pine, spruce, fir)
aren't used in the home fireplace, since resin build-up in a chimney
can promote chimney fires.
Woods that 'pop' and spark are also
considered less desirable for burning. No matter what type of wood
is burned, it's important to practice good maintenance by having a
chimney periodically inspected and swept.
Rating the overall quality of firewoods is open to some debate, but
the categories below should give the reader a rough idea of where
the various woods stand.
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Overall Rating |
Type of Firewood |
EXCELLENT |
Ash, beech, hickory, sugar maple, oak |
GOOD |
Black cherry, black locust, red maple, black walnut |
FAIR |
Elm, sweet gum, poplar, white pine |
POOR |
Spruce |
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TEN WOODBURNING TIPS
Source: The Chimney Safety Institute of America
To aid in the
prevention of chimney fires and carbon monoxide intrusion and to
help keep woodburning fireplaces and wood stoves functioning
properly, the Chimney Safety Institute of America (CSIA) offers the
following safety tips for new and returning wood burners:
Get an annual chimney check.
Have chimneys inspected annually, and cleaned as necessary, by a
qualified professional chimney service technician. This reduces the
risk of fires and carbon monoxide poisonings due to creosote buildup
or obstructions in the chimneys.
Keep it clear.
Keep tree branches and leaves at least 15 feet away from the top of
the chimney.
Install a chimney cap
to keep debris and animals out of the chimney.
Choose the right fuel.
For
burning firewood in wood stoves or fireplaces, choose well seasoned
wood that has been split for a minimum of six months to one year,
and stored in a covered and elevated location. Never burn Christmas
trees or treated wood in your fireplace or wood stove.
Build it right.
Place firewood or firelogs at the rear of the fireplace on a
supporting grate. To start the fire, use kindling or a commercial
firelighter. Never use flammable liquids.
Keep the hearth area clear.
Combustible material too close to the fireplace, or to a wood stove,
could easily catch fire. Keep furniture at least 36" away from the
hearth.
Use a fireplace screen.
Use metal mesh or a screen in front of the fireplace to catch flying
sparks that could ignite or burn holes in the carpet or flooring.
Be careful not to overload the fireplace.
Add
one manufactured firelog at a time or no more than a couple of
pieces of firewood. A fireplace is not designed to function as an
incinerator and should never be used to burn glossy paper or
garbage.
Install smoke and carbon monoxide detectors.
Place detectors throughout the house and check batteries in the
spring and fall. When you change your clocks for Daylight Savings
Time, remember to check your batteries.
Never leave a fire unattended.
Before turning in for the evening, be sure that the fire is fully
extinguished. Supervise children and pets closely around wood stoves
and fireplaces.
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PHOTOGRAPHS OF VARIOUS WOODS
Source of board photographs and
most descriptions below:
Pennsylvania Department of Agriculture
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White Oak |
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White Oak is light to dark brown
with a medium to coarse texture. It is mostly straight grained with
longer rays than red oak. When people work with white oak, they
must keep in mind that it dries slowly.
Leaves have rounded "lobes" resembling fingers. |
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Black Locust |
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Very coarse bark with hard, 'stringy'
wood that can be difficult to split. Often used for fence posts since
the wood
resists decay when in contact with soil.
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Smaller branches on Black Locust
trees have sharp thorns. The compound leaves are usually
blotchy-looking by late summer due to a leaf miner insect. |
Shagbark Hickory |
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Hickory is pale to reddish brown
and coarse textured. The grain is straight, but can be wavy or
irregular. The wood has good strength, but hickory has a reputation
as being difficult to work with. It has a tendency to split and can
be difficult to dry. |
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Shagbark hickory bark earns its name
by lifting off the tree trunk in a 'shaggy' fashion. |
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Shagbark hickory leaves with their
fall color. |
Sugar Maple |
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Hard Maple varies in color from
light to dark reddish brown depending on its growing area. It has a
close fine texture, and is generally straight grained. However,
"curly," "fiddleback," and "birds-eye" figure can also be
characteristic of this wood. Hard Maple dries slowly. |
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Sugar maple leaves just prior to fall
coloration with bright yellow and orange. |
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Beech |
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Beech is heavy, hard, and strong.
It is reddish brown in color and straight grained with a close
uniform texture.
Extremely smooth bark makes it easy to identify Beech trees. |
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Red Oak |
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Northern Red Oak is mostly
straight grained with a coarse texture. The wood is hard and heavy,
and a pinkish reddish brown.
Red Oak has shiny silver bark on the upper branches. |
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White Ash |
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Ash is grayish brown to a pale
yellow streaked with brown in color. The wood is straight grained
with a coarse uniform texture. Ash is light in weight; and is used
in making baseball bats.
Referred to as the 'Firewood of Kings' since it splits easily and
burns well, even when freshly cut.
[See special message below] |
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Feb. 2006 - Special message about Ash
firewood:
Emerald Ash Borer is causing major
destruction of ash trees in Michigan (over seven million trees so far),
Indiana, Ohio, Virginia, Maryland, and Ontario, Canada. Since this
insect can move from location to location in firewood, the agriculture
department is asking people not to transport firewood. Therefore, do
not move firewood - use local firewood. If you've already
transported firewood, burn it! |
Red Maple (aka
'Swamp Maple') |
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Red Maple wood is usually straight
grained. The wood varies from light to dark reddish brown. |
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Black Walnut |
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Deep-furrowed bark. Tree drops green
husked walnuts in the Fall. Wood has dark brown coloration.
It's difficult to grow most garden plants around Black Walnut trees
due to their secretion of 'juglone' from
most tree parts.
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Black Cherry
(aka 'Wild Cherry') |
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Cherry has a fine
uniform straight grain, smooth texture, and may contain small gum
pockets. Cherry is distinctively a rich red to a reddish brown in
color.
Cherry firewood is easy to split and very common in Pennsylvania.
Logs don't store as well outside as other types of cordwood -- keep
wood piles dry with good air circulation.
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The
Pennsylvania Dept. of Agriculture expanded the
Commonwealth's quarantine on firewood movement on August
9, 2010 from 12 counties to 43 counties, so the
quarantine now covers the western 2/3 of the state and
all hardwoods, not just ash.

Pennsylvania’s Emerald Ash Borer (EAB) quarantine now
includes the counties of: Allegheny, Armstrong, Beaver,
Bedford, Blair, Butler, Cambria, Cameron, Centre,
Clarion, Clearfield, Clinton, Columbia, Crawford,
Cumberland, Elk, Erie, Fayette, Forest, Franklin,
Fulton, Greene, Huntingdon, Indiana, Jefferson, Juniata,
Lawrence, Lycoming, McKean, Mercer, Mifflin, Montour,
Northumberland, Perry, Potter, Snyder, Somerset, Tioga,
Union, Venango, Washington, Warren and Westmoreland
counties.
It is
hoped the quarantine will slow the spread of the beetle
by restricting the movement of all ash: nursery stock,
green lumber, logs, stumps, roots, branches and wood
chips. The quarantine also includes all other
hardwoods, to include hickory, maple and oak. |
Emerald Ash Borer information (PDF 513MB)
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LINKS
Wood ashes and garden
soil
Christmas trees
De-icers
How mulch is produced
Leaf burning
Tree care
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