Quality/Knots Per Square Foot
KPSF is an
abbreviation for "Knots Per Square Foot" . KPSF is one measure of a hand knotted carpet's quality.
The higher the knots per square feet, the higher the carpet's quality on this
measure. Other determining factors of quality include the intricacy of design,
the type of wool/silk used, uniqueness of design, clarity of the face of the rug, and
Typically, higher knot counts are found
in rugs with floral or curvilinear patterns. The higher knot count allows the
curves to be formed more elegantly and enables flowers and leaves to be more
intricately woven. Geometric-patterned rugs usually have lower knot counts than
floral patterns, as the geometric shapes tend to have straight lines and angles,
which do not require as many knots per square inch. The type of pattern and
appearance desired of a rug often dictates the number of knots per square inch
A higher knot count rug is often more
expensive than a lower knot count rug of the same design and origin, everything
else being equal, as the weave is finer and more time has been spent on the rug.
On the other hand, a rug of different design and origin may be more expensive,
even though it has a lower knot count.
Keep in mind that knot count is only one
measure of a rug's quality. Also, a word of caution on judging rugs on knots per
square inch: some dealers tend to inflate the figure.
Article From Bosi Carpet, www.bosi-carpet.com