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|Ever wondered about pattern
matching carpet ? Be sure to charge more for this service!!
THERE ARE NO INDUSTRY TOLERANCES
Each mill use their own limits. This is testament to how good they can manufacture their
products. The lower the tolerance, the better they believe they can make the products.
It is important to check for pattern run off BEFORE making the first cut. The entire
shipment must be checked at various spots throughout all the rolls. The pattern run off
can then be corrected if it is within stated tolerances.
It seems to me, that the most often used numbers for out of tolerance, are:
I in. in 12' for pattern elongation
3/4 in. in 12' for pattern bow
1 2 in. in 12' for skew.
To check for pattern run off the first thing you need is a square line chalked across the
width of the carpet. This line needs to be at a 90 degree angle to the pattern, not
necessary to the side of the carpet. Measure from a like point in the pattern on both
sides, the difference will give you your skew in 12'.
Next, find a like point in the pattern on both sides of the carpet, using a chalk line or
a dry line, hold each end on the pattern. Where the pattern varies the most across the
width is your bow in 12'.
The most important is pattern elongation. To find this measurement, count down a certain
amount of pattern repeats on one side and measure the distance, following the same
procedure, using the same point of the repeat on the other the of the carpet,
measure the distance, this is the elongation. it is always a good idea to try to measure a
distance that will be close to your seam lengths. This procedure must be repeated at
different intervals throughout the roll as the difference could change, effecting your
Elongation Is important because it dictates which cut you will begin with. You MUST start
with the panel that has the most elongation, then the adjacent cuts need to be the ones
with the next longest elongation and so forth. Remember, you can always stretch a short
pattern to a long pattern, however, it is almost always impossible to shrink a
longer pattern opposed to stretching a shorter one
There are other pattern problems that will effect installation such as length bow, (this
is where the pattern bows along the length of the carpet) the trueness of the edge
( the pattern looks like a wavy line down the length) This problem is the most
prominent and should ALWAYS be checked before cutting.
Is there any wonder that installing pattern carpets should require additional
On a side note, should you encounter a carpet that is defective due to being out of
tolerance, document your findings prior to cutting the material. Contact the Mill and
explain the problems that you have encountered. If you think that you
can make the job work, you should be compensated by the MILL for the additional
work NOT THE RETAILER. Remember, the mills have tech people that most probably have
installation backgrounds, if you try to gouge them or get rich based upon the situation,
you will probably wind up with nothing. BE FAIR with your requests, and most mills will be
willing to cough up additional $$$$$ for your time to correct their mistake.
For More Information Contact:
Advanced Carpet Installations, Inc