Installation Instructions

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CRI 105 - STANDARD For INSTALLATION of RESIDENTIAL CARPET Copyright © 2019 by The Carpet and Rug Institute, Inc.
Broadloom Carpet
16.0
Patterned Carpet Installations
The following section covers proper procedures for installing patterned carpet.
16.1
Uninstalled Patterned Carpet
Carpet is a textile fabric subject to processing variations in the four pattern conditions: bow,
skew/bias, elongation variation and trueness of edge. Measurement of these four conditions
is performed on an uninstalled breadth/width of carpet. Individual manufacturers have
tolerances to which their patterned products are required to conform. There are no industry
standards for carpet pattern variations.
16.2
Manufacturing Tolerances
Most manufacturers provide established tolerances and specific installation instructions for
their patterned goods.
Factors affecting pattern match on the job site include, but are not limited to:
· method of installation
· condition and levelness of the floor
· type of carpet backing system selected.
Alignment of patterned carpet typically requires the use of mechanical stretching devices (i.e.
power stretcher, mini stretcher, etc.).
16.3
Seaming Diagram
It is required that the seaming diagram reflect the desired pattern direction.
16.4
Pattern Sequence/Roll Sequence
Sequencing information may be available from the carpet manufacturer. In the absence of
sequencing information from the carpet manufacturer, sequence carpet cuts working from
the longest measured repeat gradually down to the shortest repeat within the dye lot.
NOTE: Patterned carpet requires additional material for proper pattern matching.
16.5
Pattern Adjustment
Pattern adjustment during installation should be anticipated.