Grading of hardwood
floors is more prevalent with unfinished
flooring as it is with prefinished. Reasons
being you will find prefinished manufacturers
prefer to stay within a defined area of flooring
that is basically more uniform in appearance,
unless otherwise specified. More consistent
equates into fewer customers that may have been
lead to believe the final appearance should have
been different.
You Will See Some
Prefinished Grading
With prefinished
manufacturers nearly all will have variations in
how they describe the grading of their
individual product lines; if they offer a
description. Their grading is not as industry
followed as it is with unfinished hardwoods, but
published grading is available through the
National Wood Flooring Association (NWFA) under
names that include prime, standard, and tavern
grade.
Most prefinished
manufacturers offer assorted names such as
traditional, exclusive, character, and other
names in between. Some place a marketable name
on it and nothing else. Appearances from one
prefinished manufacturer to the next can be
different. Pictured to the right is Homerwood;
a company that specializes in character grade
flooring.
Prefinished Character
Grade
Character grade is more
consistent from one brand to the next. The term
is relatively new and is more along the lines of
a distressed hardwood. Knots, mineral streaking,
wide color variations from one board to another
are common. Many of today's character grades
command higher price tags. Generally they have
some form of distressing that increases the cost
of manufacturing.
Cabin or Tavern Grade
Prefinished Floors
These products that are
often sold prefinished with no warranty. Actual
makeup may be quite different from one
manufacturer to another. Some may contain a
large amount of color variation while others may
have small and large knots, and major mineral
streaking throughout. In addition, some of these
floors may have milling inconsistencies such as
no tongues, ends not cut square, and the finish
may not be up to standards. If cabin or tavern
grade hardwoods are appealing because of the low
price, expect the characteristics mentioned.
Nearly all larger solid
and engineered prefinished manufacturers produce
cabin grade flooring. Most come from hand
grading when unfinished hardwood is sorted
before it goes into the initial phases of
prefinished production. All material is used.
Hence the availability of cabin grade flooring.
Unfinished Hardwood
Grading
NOFMA is an organization
that publishes actual unfinished hardwood
grading on red and white oak in the USA. Not all
unfinished manufacturers follow their grading
rules religiously, and when they don't, product
is usually a slightly higher grade than it
actually is.
All hardwood species go
under different grading specifications due to
their general makeup. Shown below is a sampling
of the two most often used hardwood species for
flooring.
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Red Oak |
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Clear- Most uniform
in color consisting of mostly heartwood. |
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Select- Similar to
clear, but may contain natural
characteristics |
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#1 Common- Will
offer a variety of color, mineral
streaking, and smaller knots |
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#2 Common- Numerous
color variations and larger natural
aspects |
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Maple |
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First- has the best
appearance, natural color variations and
limited character marks. |
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Second & Better-
Varied color, numerous steaks, sapwood,
and sound knots |
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Third & Better-
Rustic in appearance with numerous
caharcteristcis allowed |
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Appearances. Red
Oak |
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Clear |
Select |
#1 Common |
# 2 Common |
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Appearances.
Maple |
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First |
Second & Better |
Third & Better |
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Packaging |
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To determine the
(nominal) length of a piece of flooring,
3/4" end match allowance shall be added to
the actual face length when measuring.
Individual strips may range in length from
9" minimum to 102" maximum. The average
length as referred to in the Official
Flooring Grading Rules apply to the total
footage of any one shipment consisting of
1,000 sq. ft. or greater amounts. The
percentages under 4', as referred to in
the Official Flooring Grading Rules apply
to the total footage of any one shipment
consisting of 1,000 sq. ft. or greater
amount.
Bundled flooring-
an individual bundle contains pieces from
6" over to 6" under the nominal length of
the bundle. Bundle lengths ranging from 1
1/4' to 7' or 8', as the stock will
produce, and placed (nested) end to end in
units (pallets) of 8' nominal length are
designated “standard packaging”; or units
of 7' and shorter nominal length are
designated “shorter packaging”.
Nested Flooring-
a nested bundle contains flooring strips
positioned end to end continuously in runs
measuring from 6" over to 6" under the
nominal length of the nested bundle. For
3/4 x 2 1/4" Flooring- a 12 run, 8'
nominal length bundle, containing 24 bd.
ft. of flooring is designated “standard
packaging”. Nested bundles shorter than 8'
nominal length are designated “shorter
packaging”.
Shorter Nested
Bundles or Boxes- bundles or boxes
containing more or fewer runs of flooring
are “non standard packaging” and
considered acceptable packaging where the
average length is maintained.
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